path: root/website/resources/scripts/testcases2/15.4.4.20.json

{
 "testCollection": {
  "name": "15.4.4.20",
  "numTests": 224,
  "tests": [
   {
    "id": "15.4.4.20-0-1",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-0-1.js",
    "description": "Array.prototype.filter must exist as a function",
    "test": "assertTrue((function testcase() {\n  var f = Array.prototype.filter;\n  if (typeof(f) === \"function\") {\n    return true;\n  }\n }).call(this));\n"
   },
   {
    "id": "15.4.4.20-0-2",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-0-2.js",
    "description": "Array.prototype.filter.length must be 1",
    "test": "assertTrue((Array.prototype.filter.length === 1));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-1-1",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-1-1.js",
    "description": "Array.prototype.filter applied to undefined throws a TypeError",
    "test": "assertTrue((function testcase() {\n        try {\n            Array.prototype.filter.call(undefined); // TypeError is thrown if value is undefined\n            return false;\n        } catch (ex) {\n            return ex instanceof TypeError;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-1-10",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-1-10.js",
    "description": "Array.prototype.filter applied to the Math object",
    "test": "assertTrue((function testcase() {\n        function callbackfn(val, idx, obj) {\n            return '[object Math]' === Object.prototype.toString.call(obj);\n        }\n\n        try {\n            Math.length = 1;\n            Math[0] = 1;\n            var newArr = Array.prototype.filter.call(Math, callbackfn);\n            return newArr[0] === 1;\n        } finally {\n            delete Math[0];\n            delete Math.length;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-1-11",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-1-11.js",
    "description": "Array.prototype.filter applied to Date object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj instanceof Date;\n        }\n\n        var obj = new Date();\n        obj.length = 1;\n        obj[0] = 1;\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr[0] === 1;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-1-12",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-1-12.js",
    "description": "Array.prototype.filter applied to RegExp object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj instanceof RegExp;\n        }\n\n        var obj = new RegExp();\n        obj.length = 2;\n        obj[1] = true;\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n        return newArr[0] === true;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-1-13",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-1-13.js",
    "description": "Array.prototype.filter applied to the JSON object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return '[object JSON]' === Object.prototype.toString.call(JSON);\n        }\n\n        try {\n            JSON.length = 1;\n            JSON[0] = 1;\n            var newArr = Array.prototype.filter.call(JSON, callbackfn);\n            return newArr[0] === 1;\n        } finally {\n            delete JSON.length;\n            delete JSON[0];\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-1-14",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-1-14.js",
    "description": "Array.prototype.filter applied to Error object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj instanceof Error;\n        }\n\n        var obj = new Error();\n        obj.length = 1;\n        obj[0] = 1;\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr[0] === 1;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-1-15",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-1-15.js",
    "description": "Array.prototype.filter applied to the Arguments object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return '[object Arguments]' === Object.prototype.toString.call(obj);\n        }\n\n        var obj = (function () {\n            return arguments;\n        }(\"a\", \"b\"));\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr[0] === \"a\" && newArr[1] === \"b\";\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-1-2",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-1-2.js",
    "description": "Array.prototype.filter applied to null throws a TypeError",
    "test": "assertTrue((function testcase() {\n        try {\n            Array.prototype.filter.call(null);\n            return false;\n        } catch (ex) {\n            return ex instanceof TypeError;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-1-3",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-1-3.js",
    "description": "Array.prototype.filter applied to boolean primitive",
    "test": "assertTrue((function testcase() {\n        function callbackfn(val, idx, obj) {\n            return obj instanceof Boolean;\n        }\n\n        try {\n            Boolean.prototype[0] = true;\n            Boolean.prototype.length = 1;\n\n            var newArr = Array.prototype.filter.call(false, callbackfn);\n            return newArr[0] === true;\n\n        } finally {\n            delete Boolean.prototype[0];\n            delete Boolean.prototype.length;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-1-4",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-1-4.js",
    "description": "Array.prototype.filter applied to Boolean Object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj instanceof Boolean;\n        }\n\n        var obj = new Boolean(true);\n        obj.length = 2;\n        obj[0] = 11;\n        obj[1] = 12;\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr[0] === 11 && newArr[1] === 12;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-1-5",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-1-5.js",
    "description": "Array.prototype.filter applied to number primitive",
    "test": "assertTrue((function testcase() {\n        function callbackfn(val, idx, obj) {\n            return obj instanceof Number;\n        }\n\n        try {\n            Number.prototype[0] = 1;\n            Number.prototype.length = 1;\n\n            var newArr = Array.prototype.filter.call(2.5, callbackfn);\n            return newArr[0] === 1;\n        } finally {\n            delete Number.prototype[0];\n            delete Number.prototype.length;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-1-6",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-1-6.js",
    "description": "Array.prototype.filter applied to Number object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj instanceof Number;\n        }\n\n        var obj = new Number(-128);\n        obj.length = 2;\n        obj[0] = 11;\n        obj[1] = 12;\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n        return newArr[0] === 11 && newArr[1] === 12;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-1-7",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-1-7.js",
    "description": "Array.prototype.filter applied to string primitive",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj instanceof String;\n        }\n\n        var newArr = Array.prototype.filter.call(\"abc\", callbackfn);\n\n        return newArr[0] === \"a\";\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-1-8",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-1-8.js",
    "description": "Array.prototype.filter applied to String object",
    "test": "assertTrue((function testcase() {\n        function callbackfn(val, idx, obj) {\n            return obj instanceof String;\n        }\n\n        var obj = new String(\"abc\");\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr[0] === \"a\";\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-1-9",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-1-9.js",
    "description": "Array.prototype.filter applied to Function object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj instanceof Function;\n        }\n\n        var obj = function (a, b) {\n            return a + b;\n        };\n        obj[0] = 11;\n        obj[1] = 9;\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr[0] === 11 && newArr[1] === 9;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-10-1",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-10-1.js",
    "description": "Array.prototype.filter doesn't mutate the Array on which it is called on",
    "test": "assertTrue((function testcase() {\n\n  function callbackfn(val, idx, obj)\n  {\n    return true;\n  }\n  var srcArr = [1,2,3,4,5];\n  srcArr.filter(callbackfn);\n  if(srcArr[0] === 1 &&\n     srcArr[1] === 2 &&\n     srcArr[2] === 3 &&\n     srcArr[3] === 4 &&\n     srcArr[4] === 5)\n  {\n    return true;\n  }\n\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-10-2",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-10-2.js",
    "description": "Array.prototype.filter returns new Array with length equal to number of true returned by callbackfn",
    "test": "assertTrue((function testcase() {\n\n  function callbackfn(val, idx, obj)\n  {\n    if(val % 2)\n      return true;\n    else\n      return false;\n  }\n  var srcArr = [1,2,3,4,5];\n  var resArr = srcArr.filter(callbackfn);\n  if(resArr.length === 3 &&\n     resArr[0] === 1 &&\n     resArr[1] === 3 &&\n     resArr[2] === 5)\n  {\n    return true;\n  }\n\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-10-3",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-10-3.js",
    "description": "Array.prototype.filter - subclassed array when length is reduced",
    "test": "assertTrue((function testcase() {\n  foo.prototype = new Array(1, 2, 3);\n  function foo() {}\n  var f = new foo();\n  f.length = 1;\n  \n  function cb(){return true;}\n  var a = f.filter(cb);\n  \n  if (Array.isArray(a) &&\n      a.length === 1) {\n    return true;\n  }\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-10-4",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-10-4.js",
    "description": "Array.prototype.filter doesn't visit expandos",
    "test": "assertTrue((function testcase() {\n\n  var callCnt = 0;\n  function callbackfn(val, idx, obj)\n  {\n    callCnt++;\n  }\n  var srcArr = [1,2,3,4,5];\n  srcArr[\"i\"] = 10;\n  srcArr[true] = 11;\n\n  var resArr = srcArr.filter(callbackfn);\n  if(callCnt == 5)\n  {\n    return true;\n  }\n\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-2-1",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-1.js",
    "description": "Array.prototype.filter applied to Array-like object, 'length' is own data property",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj.length === 2;\n        }\n\n        var obj = {\n            0: 12,\n            1: 11,\n            2: 9,\n            length: 2\n        };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 2;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-2-10",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-10.js",
    "description": "Array.prototype.filter applied to Array-like object, 'length' is inherited accessor property",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj.length === 2;\n        }\n\n        var proto = {};\n\n        Object.defineProperty(proto, \"length\", {\n            get: function () {\n                return 2;\n            },\n            configurable: true\n        });\n\n        var Con = function () { };\n        Con.prototype = proto;\n\n        var child = new Con();\n        child[0] = 12;\n        child[1] = 11;\n        child[2] = 9;\n\n        var newArr = Array.prototype.filter.call(child, callbackfn);\n        return newArr.length === 2;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty))"
   },
   {
    "id": "15.4.4.20-2-11",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-11.js",
    "description": "Array.prototype.filter applied to Array-like object, 'length' is own accessor property without a get function",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return true;\n        }\n\n        var obj = {\n            0: 11,\n            1: 12\n        };\n        Object.defineProperty(obj, \"length\", {\n            set: function () { },\n            configurable: true\n        });\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n        return newArr.length === 0 && !accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty))"
   },
   {
    "id": "15.4.4.20-2-12",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-12.js",
    "description": "Array.prototype.filter - 'length' is own accessor property without a get function that overrides an inherited accessor property",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return true;\n        }\n\n        try {\n            Object.defineProperty(Object.prototype, \"length\", {\n                get: function () {\n                    return 2;\n                },\n                configurable: true\n            });\n\n            var obj = { 0: 12, 1: 11 };\n            Object.defineProperty(obj, \"length\", {\n                set: function () { },\n                configurable: true\n            });\n\n            var newArr = Array.prototype.filter.call(obj, callbackfn);\n            return newArr.length === 0 && !accessed;\n        } finally {\n            delete Object.prototype.length;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty))"
   },
   {
    "id": "15.4.4.20-2-13",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-13.js",
    "description": "Array.prototype.filter applied to the Array-like object that 'length' is inherited accessor property without a get function",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return true;\n        }\n\n        var proto = {};\n        Object.defineProperty(proto, \"length\", {\n            set: function () { },\n            configurable: true\n        });\n\n        var Con = function () { };\n        Con.prototype = proto;\n\n        var child = new Con();\n        child[0] = 11;\n        child[1] = 12;\n\n        var newArr = Array.prototype.filter.call(child, callbackfn);\n        return newArr.length === 0 && !accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty))"
   },
   {
    "id": "15.4.4.20-2-14",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-14.js",
    "description": "Array.prototype.filter applied to the Array-like object that 'length property doesn't exist",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return true;\n        }\n\n        var obj = { 0: 11, 1: 12 };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n        return newArr.length === 0 && !accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-2-15",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-15.js",
    "description": "Array.prototype.filter - 'length' is property of the global object",
    "test": "assertTrue((function testcase() {\n       \n        function callbackfn(val, idx, obj) {\n            return  obj.length === 2;\n        }\n\n        try {\n            var oldLen = fnGlobalObject().length;\n            fnGlobalObject()[0] = 12;\n            fnGlobalObject()[1] = 11;\n            fnGlobalObject()[2] = 9;\n            fnGlobalObject().length = 2;\n            var newArr = Array.prototype.filter.call(fnGlobalObject(), callbackfn);\n            return newArr.length === 2;\n        } finally {\n            delete fnGlobalObject()[0];\n            delete fnGlobalObject()[1];\n            delete fnGlobalObject()[2];\n            fnGlobalObject().length = oldLen;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-2-17",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-17.js",
    "description": "Array.prototype.filter applied to the Arguments object, which implements its own property get method",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj.length === 2;\n        }\n\n        var func = function (a, b) {\n            var newArr = Array.prototype.filter.call(arguments, callbackfn);\n            return newArr.length === 2;\n        };\n\n        return func(12, 11);\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-2-18",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-18.js",
    "description": "Array.prototype.filter applied to String object, which implements its own property get method",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj.length === 3;\n        }\n\n        var str = new String(\"012\");\n\n        var newArr = Array.prototype.filter.call(str, callbackfn);\n        return newArr.length === 3;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-2-19",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-19.js",
    "description": "Array.prototype.filter applied to Function object, which implements its own property get method",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj.length === 2;\n        }\n\n        var fun = function (a, b) {\n            return a + b;\n        };\n        fun[0] = 12;\n        fun[1] = 11;\n        fun[2] = 9;\n\n        var newArr = Array.prototype.filter.call(fun, callbackfn);\n        return newArr.length === 2;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-2-2",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-2.js",
    "description": "Array.prototype.filter - 'length' is own data property on an Array",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj.length === 2;\n        }\n\n        var newArr = [12, 11].filter(callbackfn);\n        return newArr.length === 2;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-2-3",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-3.js",
    "description": "Array.prototype.filter applied to Array-like object, 'length' is an own data property that overrides an inherited data property",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj.length === 2;\n        }\n\n        var proto = { length: 3 };\n\n        var Con = function () { };\n        Con.prototype = proto;\n\n        var child = new Con();\n        child.length = 2;\n        child[0] = 12;\n        child[1] = 11;\n        child[2] = 9;\n\n        var newArr = Array.prototype.filter.call(child, callbackfn);\n        return newArr.length === 2;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-2-4",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-4.js",
    "description": "Array.prototype.filter - 'length' is own data property that overrides an inherited data property on an Array",
    "test": "assertTrue((function testcase() {\n\n        var arrProtoLen;\n\n        function callbackfn(val, idx, obj) {\n            return obj.length === 2;\n        }\n\n        try {\n            arrProtoLen = Array.prototype.length;\n            Array.prototype.length = 0;\n            var newArr = [12, 11].filter(callbackfn);\n            return newArr.length === 2;\n        } finally {\n            Array.prototype.length = arrProtoLen;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-2-5",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-5.js",
    "description": "Array.prototype.filter to Array-like object, 'length' is an own data property that overrides an inherited accessor property",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj.length === 2;\n        }\n\n        var proto = {};\n\n        Object.defineProperty(proto, \"length\", {\n            get: function () {\n                return 3;\n            },\n            configurable: true\n        });\n\n        var Con = function () { };\n        Con.prototype = proto;\n\n        var child = new Con();\n        Object.defineProperty(child, \"length\", {\n            value: 2,\n            configurable: true\n        });\n        child[0] = 12;\n        child[1] = 11;\n        child[2] = 9;\n\n        var newArr = Array.prototype.filter.call(child, callbackfn);\n        return newArr.length === 2;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty))"
   },
   {
    "id": "15.4.4.20-2-6",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-6.js",
    "description": "Array.prototype.filter applied to Array-like object, 'length' is an inherited data property",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj.length === 2;\n        }\n\n        var proto = { length: 2 };\n\n        var Con = function () { };\n        Con.prototype = proto;\n\n        var child = new Con();\n        child[0] = 12;\n        child[1] = 11;\n        child[2] = 9;\n\n        var newArr = Array.prototype.filter.call(child, callbackfn);\n        return newArr.length === 2;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-2-7",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-7.js",
    "description": "Array.prototype.filter applied to Array-like object, 'length' is an own accessor property",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj.length === 2;\n        }\n\n        var obj = {};\n\n        Object.defineProperty(obj, \"length\", {\n            get: function () {\n                return 2;\n            },\n            configurable: true\n        });\n\n        obj[0] = 12;\n        obj[1] = 11;\n        obj[2] = 9;\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n        return newArr.length === 2;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty))"
   },
   {
    "id": "15.4.4.20-2-8",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-8.js",
    "description": "Array.prototype.filter applied to Array-like object, 'length' is own accessor property that overrides an inherited data property",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj.length === 2;\n        }\n\n        var proto = { length: 3 };\n\n        var Con = function () { };\n        Con.prototype = proto;\n\n        var child = new Con();\n\n        Object.defineProperty(child, \"length\", {\n            get: function () {\n                return 2;\n            },\n            configurable: true\n        });\n\n        child[0] = 12;\n        child[1] = 11;\n        child[2] = 9;\n\n        var newArr = Array.prototype.filter.call(child, callbackfn);\n        return newArr.length === 2;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty))"
   },
   {
    "id": "15.4.4.20-2-9",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-2-9.js",
    "description": "Array.prototype.filter applied to Array-like object, 'length' is an own accessor property that overrides an inherited accessor property",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return obj.length === 2;\n        }\n\n        var proto = {};\n\n        Object.defineProperty(proto, \"length\", {\n            get: function () {\n                return 3;\n            },\n            configurable: true\n        });\n\n        var Con = function () { };\n        Con.prototype = proto;\n\n        var child = new Con();\n\n        Object.defineProperty(child, \"length\", {\n            get: function () {\n                return 2;\n            },\n            configurable: true\n        });\n\n        child[0] = 12;\n        child[1] = 11;\n        child[2] = 9;\n\n        var newArr = Array.prototype.filter.call(child, callbackfn);\n        return newArr.length === 2;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty))"
   },
   {
    "id": "15.4.4.20-3-1",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-1.js",
    "description": "Array.prototype.filter - value of 'length' is undefined",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return true;\n        }\n\n        var obj = { 0: 0, 1: 1, length: undefined };\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 0 && !accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-10",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-10.js",
    "description": "Array.prototype.filter - value of 'length' is a number (value is NaN)",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return true;\n        }\n\n        var obj = { 0: 9, length: NaN };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 0 && !accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-11",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-11.js",
    "description": "Array.prototype.filter - 'length' is a string containing a positive number",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = { 1: 11, 2: 9, length: \"2\" };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-12",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-12.js",
    "description": "Array.prototype.filter - 'length' is a string containing a negative number",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = { 1: 11, 2: 9, length: \"-4294967294\" };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-13",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-13.js",
    "description": "Array.prototype.filter - 'length' is a string containing a decimal number",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = { 1: 11, 2: 9, length: \"2.5\" };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-14",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-14.js",
    "description": "Array.prototype.filter - 'length' is a string containing +/-Infinity",
    "test": "assertTrue((function testcase() {\n\n        var accessed1 = false;\n        var accessed2 = false;\n        var accessed3 = false;\n\n        function callbackfn1(val, idx, obj) {\n            accessed1 = true;\n            return true;\n        }\n\n        function callbackfn2(val, idx, obj) {\n            accessed2 = true;\n            return true;\n        }\n\n        function callbackfn3(val, idx, obj) {\n            accessed3 = true;\n            return true;\n        }\n\n        var obj1 = { 0: 9, length: \"Infinity\" };\n        var obj2 = { 0: 9, length: \"-Infinity\" };\n        var obj3 = { 0: 9, length: \"+Infinity\" };\n\n        var newArr1 = Array.prototype.filter.call(obj1, callbackfn1);\n        var newArr2 = Array.prototype.filter.call(obj2, callbackfn2);\n        var newArr3 = Array.prototype.filter.call(obj3, callbackfn3);\n\n        return !accessed1 && newArr1.length === 0 &&\n            !accessed2 && newArr2.length === 0 && \n            !accessed3 && newArr3.length === 0;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-15",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-15.js",
    "description": "Array.prototype.filter - 'length' is a string containing an exponential number",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = { 1: 11, 2: 9, length: \"2E0\" };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-16",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-16.js",
    "description": "Array.prototype.filter - 'length' is a string containing a hex number",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = { 1: 11, 2: 9, length: \"0x0002\" };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-17",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-17.js",
    "description": "Array.prototype.filter - 'length' is a string containing a number with leading zeros",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = { 1: 11, 2: 9, length: \"0002.00\" };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-18",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-18.js",
    "description": "Array.prototype.filter - value of 'length' is a string that can't convert to a number",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return true;\n        }\n\n        var obj = { 0: 9, length: \"asdf!_\" };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return !accessed && newArr.length === 0;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-19",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-19.js",
    "description": "Array.prototype.filter - value of 'length' is an Object which has an own toString method.",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = {\n            1: 11,\n            2: 9,\n            length: {\n                toString: function () {\n                    return '2';\n                }\n            }\n        };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-2",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-2.js",
    "description": "Array.prototype.filter applied on an Array-like object if 'length' is 1 (length overridden to true(type conversion))",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = { 0: 11, 1: 9, length: true };\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-20",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-20.js",
    "description": "Array.prototype.filter - value of 'length' is an Object which has an own valueOf method.",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = {\n            1: 11,\n            2: 9,\n            length: {\n                valueOf: function () {\n                    return 2;\n                }\n            }\n        };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-21",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-21.js",
    "description": "Array.prototype.filter - 'length' is an object that has an own valueOf method that returns an object and toString method that returns a string",
    "test": "assertTrue((function testcase() {\n\n        var firstStepOccured = false;\n        var secondStepOccured = false;\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = {\n            1: 11,\n            2: 9,\n            length: {\n                valueOf: function () {\n                    firstStepOccured = true;\n                    return {};\n                },\n                toString: function () {\n                    secondStepOccured = true;\n                    return '2';\n                }\n            }\n        };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11 && firstStepOccured && secondStepOccured;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-22",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-22.js",
    "description": "Array.prototype.filter throws TypeError exception when 'length' is an object with toString and valueOf methods that don�t return primitive values",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        var firstStepOccured = false;\n        var secondStepOccured = false;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return true;\n        }\n\n        var obj = {\n            1: 11,\n            2: 12,\n\n            length: {\n                valueOf: function () {\n                    firstStepOccured = true;\n                    return {};\n                },\n                toString: function () {\n                    secondStepOccured = true;\n                    return {};\n                }\n            }\n        };\n\n        try {\n            Array.prototype.filter.call(obj, callbackfn);\n            return false;\n        } catch (ex) {\n            return (ex instanceof TypeError) && !accessed && firstStepOccured && secondStepOccured;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-23",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-23.js",
    "description": "Array.prototype.filter uses inherited valueOf method when 'length' is an object with an own toString and inherited valueOf methods",
    "test": "assertTrue((function testcase() {\n\n        var valueOfAccessed = false;\n        var toStringAccessed = false;\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var proto = {\n            valueOf: function () {\n                valueOfAccessed = true;\n                return 2;\n            }\n        };\n\n        var Con = function () { };\n        Con.prototype = proto;\n\n        var child = new Con();\n\n        child.toString = function () {\n            toStringAccessed = true;\n            return '1';\n        };\n\n        var obj = {\n            1: 11,\n            2: 9,\n            length: child\n        };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11 && valueOfAccessed && !toStringAccessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-24",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-24.js",
    "description": "Array.prototype.filter - value of 'length' is a positive non-integer, ensure truncation occurs in the proper direction",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = {\n            1: 11,\n            2: 9,\n            length: 2.685\n        };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-25",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-25.js",
    "description": "Array.prototype.filter - value of 'length' is a negative non-integer, ensure truncation occurs in the proper direction",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = {\n            1: 11,\n            2: 9,\n            length: -4294967294.5\n        };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-28",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-28.js",
    "description": "Array.prototype.filter - value of 'length' is boundary value (2^32)",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return true;\n        }\n\n        var obj = {\n            0: 12,\n            length: 4294967296\n        };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return !accessed && newArr.length === 0;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-29",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-29.js",
    "description": "Array.prototype.filter - value of 'length' is boundary value (2^32 + 1)",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = {\n            0: 11,\n            1: 9,\n            length: 4294967297\n        };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-3",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-3.js",
    "description": "Array.prototype.filter - value of 'length' is a number (value is 0)",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return true;\n        }\n\n        var obj = { 0: 11, length: 0 };\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 0 && !accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-4",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-4.js",
    "description": "Array.prototype.filter - value of 'length' is a number (value is +0)",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return true;\n        }\n\n        var obj = { 0: 11, length: +0 };\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 0 && !accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-5",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-5.js",
    "description": "Array.prototype.filter - value of 'length' is a number (value is -0)",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return true;\n        }\n\n        var obj = { 0: 11, length: -0 };\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 0 && !accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-6",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-6.js",
    "description": "Array.prototype.filter - value of 'length' is a number (value is positive)",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = { 1: 11, 2: 9, length: 2 };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-7",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-7.js",
    "description": "Array.prototype.filter - value of 'length' is a number (value is negative)",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = { 1: 11, 2: 9, length: -4294967294 };\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-8",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-8.js",
    "description": "Array.prototype.filter - value of 'length' is a number (value is Infinity)",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return true;\n        }\n\n        var obj = { 0: 9, length: Infinity };\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 0 && !accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-3-9",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-3-9.js",
    "description": "Array.prototype.filter - value of 'length' is a number (value is -Infinity)",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return true;\n        }\n\n        var obj = { 0: 9, length: -Infinity };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 0 && !accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-4-1",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-4-1.js",
    "description": "Array.prototype.filter throws TypeError if callbackfn is undefined",
    "test": "assertTrue((function testcase() {\n\n  var arr = new Array(10);\n  try {\n    arr.filter();    \n  }\n  catch(e) {\n    if(e instanceof TypeError)\n      return true;  \n  }\n\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-4-10",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-4-10.js",
    "description": "Array.prototype.filter - the exception is not thrown if exception was thrown by step 2",
    "test": "assertTrue((function testcase() {\n\n        var obj = { 0: 11, 1: 12 };\n\n        Object.defineProperty(obj, \"length\", {\n            get: function () {\n                throw new SyntaxError();\n            },\n            configurable: true\n        });\n\n        try {\n            Array.prototype.filter.call(obj, undefined);\n            return false;\n        } catch (ex) {\n            return !(ex instanceof TypeError);\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty))"
   },
   {
    "id": "15.4.4.20-4-11",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-4-11.js",
    "description": "Array.prototype.filter - the exception is not thrown if exception was thrown by step 3",
    "test": "assertTrue((function testcase() {\n\n        var obj = { 0: 11, 1: 12 };\n\n        Object.defineProperty(obj, \"length\", {\n            get: function () {\n                return {\n                    toString: function () {\n                        throw new SyntaxError();\n                    }\n                };\n            },\n            configurable: true\n        });\n\n        try {\n            Array.prototype.filter.call(obj, undefined);\n            return false;\n        } catch (ex) {\n            return !(ex instanceof TypeError);\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty))"
   },
   {
    "id": "15.4.4.20-4-12",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-4-12.js",
    "description": "Array.prototype.filter - 'callbackfn' is a function",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            if (idx === 1) {\n                return val === 9;\n            }\n            return false;\n        }\n\n        var newArr = [11, 9].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 9;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-4-15",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-4-15.js",
    "description": "Array.prototype.filter - calling with no callbackfn is the same as passing undefined for callbackfn",
    "test": "assertTrue((function testcase() {\n        var obj = { 10: 10 };\n        var lengthAccessed = false;\n        var loopAccessed = false;\n        Object.defineProperty(obj, \"length\", {\n            get: function () {\n                lengthAccessed = true;\n                return 20;\n            },\n            configurable: true\n        });\n        Object.defineProperty(obj, \"0\", {\n            get: function () {\n                loopAccessed = true;\n                return 10;\n            },\n            configurable: true\n        });\n\n        try {\n            Array.prototype.filter.call(obj);\n            return false;\n        } catch (ex) {\n            return (ex instanceof TypeError) && lengthAccessed && !loopAccessed;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnObjects())"
   },
   {
    "id": "15.4.4.20-4-2",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-4-2.js",
    "description": "Array.prototype.filter throws ReferenceError if callbackfn is unreferenced",
    "test": "assertTrue((function testcase() {\n\n  var arr = new Array(10);\n  try {\n    arr.filter(foo);    \n  }\n  catch(e) {\n    if(e instanceof ReferenceError)\n      return true;  \n  }\n\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-4-3",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-4-3.js",
    "description": "Array.prototype.filter throws TypeError if callbackfn is null",
    "test": "assertTrue((function testcase() {\n\n  var arr = new Array(10);\n  try {\n    arr.filter(null);    \n  }\n  catch(e) {\n    if(e instanceof TypeError)\n      return true;  \n  }\n\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-4-4",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-4-4.js",
    "description": "Array.prototype.filter throws TypeError if callbackfn is boolean",
    "test": "assertTrue((function testcase() {\n\n  var arr = new Array(10);\n  try {\n    arr.filter(true);    \n  }\n  catch(e) {\n    if(e instanceof TypeError)\n      return true;  \n  }\n\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-4-5",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-4-5.js",
    "description": "Array.prototype.filter throws TypeError if callbackfn is number",
    "test": "assertTrue((function testcase() {\n\n  var arr = new Array(10);\n  try {\n    arr.filter(5);    \n  }\n  catch(e) {\n    if(e instanceof TypeError)\n      return true;  \n  }\n\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-4-6",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-4-6.js",
    "description": "Array.prototype.filter throws TypeError if callbackfn is string",
    "test": "assertTrue((function testcase() {\n\n  var arr = new Array(10);\n  try {\n    arr.filter(\"abc\");    \n  }\n  catch(e) {\n    if(e instanceof TypeError)\n      return true;  \n  }\n\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-4-7",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-4-7.js",
    "description": "Array.prototype.filter throws TypeError if callbackfn is Object without [[Call]] internal method",
    "test": "assertTrue((function testcase() {\n\n  var arr = new Array(10);\n  try {\n    arr.filter(new Object());    \n  }\n  catch(e) {\n    if(e instanceof TypeError)\n      return true;  \n  }\n\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-4-8",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-4-8.js",
    "description": "Array.prototype.filter - side effects produced by step 2 are visible when an exception occurs",
    "test": "assertTrue((function testcase() {\n\n        var obj = { 0: 11, 1: 12 };\n\n        var accessed = false;\n\n        Object.defineProperty(obj, \"length\", {\n            get: function () {\n                accessed = true;\n                return 2;\n            },\n            configurable: true\n        });\n\n        try {\n            Array.prototype.filter.call(obj, null);\n            return false;\n        } catch (ex) {\n            return ex instanceof TypeError && accessed;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty))"
   },
   {
    "id": "15.4.4.20-4-9",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-4-9.js",
    "description": "Array.prototype.filter - side effects produced by step 3 are visible when an exception occurs",
    "test": "assertTrue((function testcase() {\n\n        var obj = { 0: 11, 1: 12 };\n\n        var accessed = false;\n\n        Object.defineProperty(obj, \"length\", {\n            get: function () {\n                return {\n                    toString: function () {\n                        accessed = true;\n                        return \"2\";\n                    }\n                };\n            },\n            configurable: true\n        });\n\n        try {\n            Array.prototype.filter.call(obj, null);\n            return false;\n        } catch (ex) {\n            return ex instanceof TypeError && accessed;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty))"
   },
   {
    "id": "15.4.4.20-5-1-s",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20-5-1-s.js",
    "description": "Array.prototype.filter - thisArg not passed to strict callbackfn",
    "test": "assertTrue((function testcase() {\n  var innerThisCorrect = false;\n  \n  function callbackfn(val, idx, obj) {\n    \"use strict\";\n    innerThisCorrect = this===undefined;\n    return true;\n  }\n\n  [1].filter(callbackfn);\n  return innerThisCorrect;    \n }).call(this));\n",
    "precondition": "(fnSupportsStrict() && fnExists(Array.prototype.filter))",
    "strict_only": ""
   },
   {
    "id": "15.4.4.20-5-1",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-1.js",
    "description": "Array.prototype.filter - thisArg is passed",
    "test": "assertTrue((function testcase() {\n        this._15_4_4_20_5_1 = false;\n        var _15_4_4_20_5_1 = true;\n\n        function callbackfn(val, idx, obj) {\n            return this._15_4_4_20_5_1;\n        }\n        var srcArr = [1];\n        var resArr = srcArr.filter(callbackfn);\n        return resArr.length === 0;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-10",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-10.js",
    "description": "Array.prototype.filter - Array Object can be used as thisArg",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        var objArray = new Array(10);\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return this === objArray;\n        }\n\n\n        var newArr = [11].filter(callbackfn, objArray);\n\n        return newArr[0] === 11 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-11",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-11.js",
    "description": "Array.prototype.filter - String Object can be used as thisArg",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        var objString = new String();\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return this === objString;\n        }\n\n        var newArr = [11].filter(callbackfn, objString);\n\n        return newArr[0] === 11 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-12",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-12.js",
    "description": "Array.prototype.filter - Boolean Object can be used as thisArg",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        var objBoolean = new Boolean();\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return this === objBoolean;\n        }\n\n        var newArr = [11].filter(callbackfn, objBoolean);\n\n        return newArr[0] === 11 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-13",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-13.js",
    "description": "Array.prototype.filter - Number Object can be used as thisArg",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        var objNumber = new Number();\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return this === objNumber;\n        }\n\n        var newArr = [11].filter(callbackfn, objNumber);\n\n        return newArr[0] === 11 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-14",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-14.js",
    "description": "Array.prototype.filter - the Math object can be used as thisArg",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return this === Math;\n        }\n\n        var newArr = [11].filter(callbackfn, Math);\n\n        return newArr[0] === 11 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-15",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-15.js",
    "description": "Array.prototype.filter - Date Object can be used as thisArg",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        var objDate = new Date();\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return this === objDate;\n        }\n\n        var newArr = [11].filter(callbackfn, objDate);\n\n        return newArr[0] === 11 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-16",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-16.js",
    "description": "Array.prototype.filter - RegExp Object can be used as thisArg",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        var objRegExp = new RegExp();\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return this === objRegExp;\n        }\n\n        var newArr = [11].filter(callbackfn, objRegExp);\n\n        return newArr[0] === 11 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-17",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-17.js",
    "description": "Array.prototype.filter - the JSON object can be used as thisArg",
    "test": "assertTrue((function testcase() {\n        var accessed = false;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return this === JSON;\n        }\n\n        var newArr = [11].filter(callbackfn, JSON);\n\n        return newArr[0] === 11 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-18",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-18.js",
    "description": "Array.prototype.filter - Error Object can be used as thisArg",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        var objError = new RangeError();\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return this === objError;\n        }\n\n        var newArr = [11].filter(callbackfn, objError);\n\n        return newArr[0] === 11 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-19",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-19.js",
    "description": "Array.prototype.filter - the Arguments object can be used as thisArg",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        var arg;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return this === arg;\n        }\n\n        (function fun() {\n            arg = arguments;\n        }(1, 2, 3));\n\n        var newArr = [11].filter(callbackfn, arg);\n        return newArr[0] === 11 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-2",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-2.js",
    "description": "Array.prototype.filter - thisArg is Object",
    "test": "assertTrue((function testcase() {\n  var res = false;\n  var o = new Object();\n  o.res = true;\n  function callbackfn(val, idx, obj)\n  {\n    return this.res;\n  }\n\n  var srcArr = [1];\n  var resArr = srcArr.filter(callbackfn,o);\n  if( resArr.length === 1)\n    return true;\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-21",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-21.js",
    "description": "Array.prototype.filter - the global object can be used as thisArg",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return this === fnGlobalObject();\n        }\n\n        var newArr = [11].filter(callbackfn, fnGlobalObject());\n\n        return newArr[0] === 11 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-22",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-22.js",
    "description": "Array.prototype.filter - boolean primitive can be used as thisArg",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return this.valueOf() === false;\n        }\n\n        var newArr = [11].filter(callbackfn, false);\n\n        return newArr[0] === 11 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-23",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-23.js",
    "description": "Array.prototype.filter - number primitive can be used as thisArg",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return this.valueOf() === 101;\n        }\n\n        var newArr = [11].filter(callbackfn, 101);\n\n        return newArr[0] === 11 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-24",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-24.js",
    "description": "Array.prototype.filter - string primitive can be used as thisArg",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return this.valueOf() === \"abc\";\n        }\n\n        var newArr = [11].filter(callbackfn, \"abc\");\n\n        return newArr[0] === 11 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-27",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-27.js",
    "description": "Array.prototype.filter - Array.isArray(arg) returns true when arg is the returned array",
    "test": "assertTrue((function testcase() {\n\n        var newArr = [11].filter(function () { });\n\n        return Array.isArray(newArr);\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Array.isArray))"
   },
   {
    "id": "15.4.4.20-5-28",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-28.js",
    "description": "Array.prototype.filter - the returned array is instanceof Array",
    "test": "assertTrue((function testcase() {\n\n        var newArr = [11].filter(function () { });\n\n        return newArr instanceof Array;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-29",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-29.js",
    "description": "Array.prototype.filter - returns an array whose length is 0",
    "test": "assertTrue((function testcase() {\n\n        var newArr = [11].filter(function () { });\n\n        return newArr.length === 0;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-3",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-3.js",
    "description": "Array.prototype.filter - thisArg is Array",
    "test": "assertTrue((function testcase() {\n  var res = false;\n  var a = new Array();\n  a.res = true;\n  function callbackfn(val, idx, obj)\n  {\n    return this.res;\n  }\n\n  var srcArr = [1];\n  var resArr = srcArr.filter(callbackfn,a);\n  if( resArr.length === 1)\n    return true;\n\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-30",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-30.js",
    "description": "Array.prototype.filter - thisArg not passed",
    "test": "assertTrue((function testcase() {\n        function innerObj() {\n            this._15_4_4_20_5_30 = true;\n            var _15_4_4_20_5_30 = false;\n            \n            function callbackfn(val, idx, obj) {\n                return this._15_4_4_20_5_30;\n            }\n            var srcArr = [1];\n            var resArr = srcArr.filter(callbackfn);\n            this.retVal = resArr.length === 0;\n        }\n        return new innerObj().retVal;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-4",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-4.js",
    "description": "Array.prototype.filter - thisArg is object from object template(prototype)",
    "test": "assertTrue((function testcase() {\n  var res = false;\n  function callbackfn(val, idx, obj)\n  {\n    return this.res;\n  }\n  \n  function foo(){}\n  foo.prototype.res = true;\n  var f = new foo();\n\n  var srcArr = [1];\n  var resArr = srcArr.filter(callbackfn,f);\n  if( resArr.length === 1)\n    return true;    \n\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-5",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-5.js",
    "description": "Array.prototype.filter - thisArg is object from object template",
    "test": "assertTrue((function testcase() {\n  var res = false;\n  function callbackfn(val, idx, obj)\n  {\n    return this.res;\n  }\n\n  function foo(){}\n  var f = new foo();\n  f.res = true;\n  \n  var srcArr = [1];\n  var resArr = srcArr.filter(callbackfn,f);\n  if( resArr.length === 1)\n    return true;    \n\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-6",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-6.js",
    "description": "Array.prototype.filter - thisArg is function",
    "test": "assertTrue((function testcase() {\n  var res = false;\n  function callbackfn(val, idx, obj)\n  {\n    return this.res;\n  }\n\n  function foo(){}\n  foo.res = true;\n  \n  var srcArr = [1];\n  var resArr = srcArr.filter(callbackfn,foo);\n  if( resArr.length === 1)\n    return true;    \n\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-7",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-7.js",
    "description": "Array.prototype.filter - built-in functions can be used as thisArg",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return this === eval;\n        }\n\n        var newArr = [11].filter(callbackfn, eval);\n\n        return newArr[0] === 11 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-5-9",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-9.js",
    "description": "Array.prototype.filter - Function Object can be used as thisArg",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        var objFunction = function () { };\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return this === objFunction;\n        }\n\n        var newArr = [11].filter(callbackfn, objFunction);\n\n        return newArr[0] === 11 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-6-1",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-6-1.js",
    "description": "Array.prototype.filter returns an empty array if 'length' is 0 (empty array)",
    "test": "assertTrue((function testcase() {\n  function cb(){}\n  var a = [].filter(cb);\n  if (Array.isArray(a) &&\n      a.length === 0) {\n    return true;\n  }\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-6-2",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-6-2.js",
    "description": "Array.prototype.filter returns an empty array if 'length' is 0 (subclassed Array, length overridden to null (type conversion))",
    "test": "assertTrue((function testcase() {\n  foo.prototype = new Array(1, 2, 3);\n  function foo() {}\n  var f = new foo();\n  f.length = null;\n  \n  function cb(){}\n  var a = f.filter(cb);\n  \n  if (Array.isArray(a) &&\n      a.length === 0) {\n    return true;\n  }\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-6-3",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-6-3.js",
    "description": "Array.prototype.filter returns an empty array if 'length' is 0 (subclassed Array, length overridden to false (type conversion))",
    "test": "assertTrue((function testcase() {\n  foo.prototype = new Array(1, 2, 3);\n  function foo() {}\n  var f = new foo();\n  f.length = false;\n  \n  function cb(){}\n  var a = f.filter(cb);\n  \n  if (Array.isArray(a) &&\n      a.length === 0) {\n    return true;\n  }\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-6-4",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-6-4.js",
    "description": "Array.prototype.filter returns an empty array if 'length' is 0 (subclassed Array, length overridden to 0 (type conversion))",
    "test": "assertTrue((function testcase() {\n  foo.prototype = new Array(1, 2, 3);\n  function foo() {}\n  var f = new foo();\n  f.length = 0;\n  \n  function cb(){}\n  var a = f.filter(cb);\n  \n  if (Array.isArray(a) &&\n      a.length === 0) {\n    return true;\n  }\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-6-5",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-6-5.js",
    "description": "Array.prototype.filter returns an empty array if 'length' is 0 (subclassed Array, length overridden to '0' (type conversion))",
    "test": "assertTrue((function testcase() {\n  foo.prototype = new Array(1, 2, 3);\n  function foo() {}\n  var f = new foo();\n  f.length = '0';\n  \n  function cb(){}\n  var a = f.filter(cb);\n  \n  if (Array.isArray(a) &&\n      a.length === 0) {\n    return true;\n  }\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-6-6",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-6-6.js",
    "description": "Array.prototype.filter returns an empty array if 'length' is 0 (subclassed Array, length overridden with obj with valueOf)",
    "test": "assertTrue((function testcase() {\n  foo.prototype = new Array(1, 2, 3);\n  function foo() {}\n  var f = new foo();\n  \n  var o = { valueOf: function () { return 0;}};\n  f.length = o;\n  \n  function cb(){}\n  var a = f.filter(cb);\n  \n  if (Array.isArray(a) &&\n      a.length === 0) {\n    return true;\n  }\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-6-7",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-6-7.js",
    "description": "Array.prototype.filter returns an empty array if 'length' is 0 (subclassed Array, length overridden with obj w/o valueOf (toString))",
    "test": "assertTrue((function testcase() {\n  foo.prototype = new Array(1, 2, 3);\n  function foo() {}\n  var f = new foo();\n  \n  var o = { toString: function () { return '0';}};\n  f.length = o;\n  \n  // objects inherit the default valueOf method of the Object object;\n  // that simply returns the itself. Since the default valueOf() method\n  // does not return a primitive value, ES next tries to convert the object\n  // to a number by calling its toString() method and converting the\n  // resulting string to a number.\n\n  function cb(){}\n  var a = f.filter(cb);\n  \n  if (Array.isArray(a) &&\n      a.length === 0) {\n    return true;\n  }\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-6-8",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-6-8.js",
    "description": "Array.prototype.filter returns an empty array if 'length' is 0 (subclassed Array, length overridden with []",
    "test": "assertTrue((function testcase() {\n  foo.prototype = new Array(1, 2, 3);\n  function foo() {}\n  var f = new foo();\n  \n  f.length = [];\n  \n  // objects inherit the default valueOf method of the Object object;\n  // that simply returns the itself. Since the default valueOf() method\n  // does not return a primitive value, ES next tries to convert the object\n  // to a number by calling its toString() method and converting the\n  // resulting string to a number.\n  //\n  // The toString( ) method on Array converts the array elements to strings,\n  // then returns the result of concatenating these strings, with commas in\n  // between. An array with no elements converts to the empty string, which\n  // converts to the number 0. If an array has a single element that is a\n  // number n, the array converts to a string representation of n, which is\n  // then converted back to n itself. If an array contains more than one element,\n  // or if its one element is not a number, the array converts to NaN.\n\n  function cb(){}\n  var a = f.filter(cb);\n  \n  if (Array.isArray(a) &&\n      a.length === 0) {\n    return true;\n  }\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-1",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-1.js",
    "description": "Array.prototype.filter doesn't consider new elements added to array after it is called",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            srcArr[2] = 3;\n            srcArr[5] = 6;\n            return true;\n        }\n\n        var srcArr = [1, 2, , 4, 5];\n        var resArr = srcArr.filter(callbackfn);\n        return resArr.length === 5;\n\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-2",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-2.js",
    "description": "Array.prototype.filter considers new value of elements in array after it is called",
    "test": "assertTrue((function testcase() { \n \n  function callbackfn(val, idx, obj)\n  {    \n    srcArr[2] = -1;\n    srcArr[4] = -1;\n    if(val > 0)\n      return true;\n    else\n      return false;\n  }\n\n  var srcArr = [1,2,3,4,5];\n  var resArr = srcArr.filter(callbackfn);\n  if(resArr.length === 3 && resArr[0] === 1 && resArr[2] === 4)\n      return true;  \n  \n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-3",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-3.js",
    "description": "Array.prototype.filter doesn't visit deleted elements in array after the call",
    "test": "assertTrue((function testcase() { \n \n  function callbackfn(val, idx, obj)\n  {\n    delete srcArr[2];\n    delete srcArr[4];\n    if(val > 0)\n      return true;\n    else\n      return false;\n   }\n\n  var srcArr = [1,2,3,4,5];\n  var resArr = srcArr.filter(callbackfn);\n  if(resArr.length === 3 && resArr[0] === 1 && resArr[2] === 4 )    // two elements deleted\n      return true;  \n  \n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-4",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-4.js",
    "description": "Array.prototype.filter doesn't visit deleted elements when Array.length is decreased",
    "test": "assertTrue((function testcase() { \n \n  function callbackfn(val, idx, obj)\n  {\n    srcArr.length = 2;\n    return true;\n  }\n\n  var srcArr = [1,2,3,4,6];\n  var resArr = srcArr.filter(callbackfn);\n  if(resArr.length === 2 )\n      return true;  \n  \n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-5",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-5.js",
    "description": "Array.prototype.filter doesn't consider newly added elements in sparse array",
    "test": "assertTrue((function testcase() { \n \n  function callbackfn(val, idx, obj)\n  {\n    srcArr[1000] = 3;\n    return true;\n  }\n\n  var srcArr = new Array(10);\n  srcArr[1] = 1;\n  srcArr[2] = 2;\n  var resArr = srcArr.filter(callbackfn);\n  if( resArr.length === 2)    \n      return true;  \n  \n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-6",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-6.js",
    "description": "Array.prototype.filter visits deleted element in array after the call when same index is also present in prototype",
    "test": "assertTrue((function testcase() { \n \n  function callbackfn(val, idx, obj)\n  {\n    delete srcArr[2];\n    delete srcArr[4];\n    if(val > 0)\n      return true;\n    else\n      return false;\n   }\n\n  Array.prototype[4] = 5;\n  var srcArr = [1,2,3,4,5];\n  var resArr = srcArr.filter(callbackfn);\n  delete Array.prototype[4];\n  if(resArr.length === 4 && resArr[0] === 1 && resArr[3] == 5)    // only one element deleted\n      return true;  \n  \n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-7",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-7.js",
    "description": "Array.prototype.filter stops calling callbackfn once the array is deleted during the call",
    "test": "assertTrue((function testcase() {\n        var o = new Object();\n        o.srcArr = [1, 2, 3, 4, 5];\n\n        function callbackfn(val, idx, obj) {\n            delete o.srcArr;\n            if (val > 0)\n                return true;\n            else\n                return false;\n        }\n\n        var resArr = o.srcArr.filter(callbackfn);\n        return resArr.length === 5 && typeof o.srcArr === \"undefined\";\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-8",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-8.js",
    "description": "Array.prototype.filter - no observable effects occur if len is 0",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return val > 10;\n        }\n\n        var obj = { 0: 11, 1: 12, length: 0 };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return accessed === false && obj.length === 0 && newArr.length === 0;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-9",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-9.js",
    "description": "Array.prototype.filter - modifications to length don't change number of iterations",
    "test": "assertTrue((function testcase() {\n\n        var called = 0;\n\n        function callbackfn(val, idx, obj) {\n            called++;\n            return true;\n        }\n\n        var obj = { 1: 12, 2: 9, length: 2 };\n\n        Object.defineProperty(obj, \"0\", {\n            get: function () {\n                obj.length = 3;\n                return 11;\n            },\n            configurable: true\n        });\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 2 && 2 === called;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnObjects())"
   },
   {
    "id": "15.4.4.20-9-b-1",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-b-1.js",
    "description": "Array.prototype.filter - callbackfn not called for indexes never been assigned values",
    "test": "assertTrue((function testcase() { \n \n  var callCnt = 0;\n  function callbackfn(val, idx, obj)\n  {\n    callCnt++;\n    return false;\n  }\n\n  var srcArr = new Array(10);\n  srcArr[1] = undefined; //explicitly assigning a value\n  var resArr = srcArr.filter(callbackfn);\n  if( resArr.length === 0 && callCnt === 1)\n      return true;    \n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-b-10",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-b-10.js",
    "description": "Array.prototype.filter - deleting property of prototype causes prototype index property not to be visited on an Array-like Object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n        var obj = { 2: 2, length: 20 };\n\n        Object.defineProperty(obj, \"0\", {\n            get: function () {\n                delete Object.prototype[1];\n                return 0;\n            },\n            configurable: true\n        });\n\n        try {\n            Object.prototype[1] = 1;\n            var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n            return newArr.length === 2 && newArr[1] !== 1;\n        } finally {\n            delete Object.prototype[1];\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnObjects())"
   },
   {
    "id": "15.4.4.20-9-b-11",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-b-11.js",
    "description": "Array.prototype.filter - deleting property of prototype causes prototype index property not to be visited on an Array",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n        var arr = [0, , 2];\n\n        Object.defineProperty(arr, \"0\", {\n            get: function () {\n                delete Array.prototype[1];\n                return 0;\n            },\n            configurable: true\n        });\n\n        try {\n            Array.prototype[1] = 1;\n            var newArr = arr.filter(callbackfn);\n            return newArr.length === 2 && newArr[1] !== 1;\n        } finally {\n            delete Array.prototype[1];\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && ![, 1].hasOwnProperty(0) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-b-12",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-b-12.js",
    "description": "Array.prototype.filter - deleting own property with prototype property causes prototype index property to be visited on an Array-like object",
    "test": "assertTrue((function testcase() {\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n        var obj = { 0: 0, 1: 111, 2: 2, length: 10 };\n\n        Object.defineProperty(obj, \"0\", {\n            get: function () {\n                delete obj[1];\n                return 0;\n            },\n            configurable: true\n        });\n\n        try {\n            Object.prototype[1] = 1;\n            var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n            return newArr.length === 3 && newArr[1] === 1;\n        } finally {\n            delete Object.prototype[1];\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnObjects())"
   },
   {
    "id": "15.4.4.20-9-b-13",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-b-13.js",
    "description": "Array.prototype.filter - deleting own property with prototype property causes prototype index property to be visited on an Array",
    "test": "assertTrue((function testcase() {\n        function callbackfn(val, idx, obj) {\n            return val < 3 ? true : false;\n        }\n        var arr = [0, 111, 2];\n\n        Object.defineProperty(arr, \"0\", {\n            get: function () {\n                delete arr[1];\n                return 0;\n            },\n            configurable: true\n        });\n\n        try {\n            Array.prototype[1] = 1;\n            var newArr = arr.filter(callbackfn);\n\n            return newArr.length === 3 && newArr[1] === 1;\n        } finally {\n            delete Array.prototype[1];\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-b-14",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-b-14.js",
    "description": "Array.prototype.filter - decreasing length of array causes index property not to be visited",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n        var arr = [0, 1, 2, \"last\"];\n\n        Object.defineProperty(arr, \"0\", {\n            get: function () {\n                arr.length = 3;\n                return 0;\n            },\n            configurable: true\n        });\n\n        var newArr = arr.filter(callbackfn);\n\n\n        return newArr.length === 3 && newArr[2] === 2;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-b-15",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-b-15.js",
    "description": "Array.prototype.filter - decreasing length of array with prototype property causes prototype index property to be visited",
    "test": "assertTrue((function testcase() {\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n        var arr = [0, 1, 2];\n\n        try {\n            Object.defineProperty(Array.prototype, \"2\", {\n                get: function () {\n                    return \"prototype\";\n                },\n                configurable: true\n            });\n\n            Object.defineProperty(arr, \"1\", {\n                get: function () {\n                    arr.length = 2;\n                    return 1;\n                },\n                configurable: true\n            });\n\n            var newArr = arr.filter(callbackfn);\n\n            return newArr.length === 3 && newArr[2] === \"prototype\";\n        } finally {\n            delete Array.prototype[2];\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-b-16",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-b-16.js",
    "description": "Array.prototype.filter - decreasing length of array does not delete non-configurable properties",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var arr = [0, 1, 2];\n\n        Object.defineProperty(arr, \"2\", {\n            get: function () {\n                return \"unconfigurable\";\n            },\n            configurable: false\n        });\n\n        Object.defineProperty(arr, \"1\", {\n            get: function () {\n                arr.length = 2;\n                return 1;\n            },\n            configurable: true\n        });\n\n        var newArr = arr.filter(callbackfn);\n\n        return newArr.length === 3 && newArr[2] === \"unconfigurable\";\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-b-2",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-b-2.js",
    "description": "Array.prototype.filter - added properties in step 2 are visible here",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = {};\n\n        Object.defineProperty(obj, \"length\", {\n            get: function () {\n                obj[2] = \"length\";\n                return 3;\n            },\n            configurable: true\n        });\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === \"length\";\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty))"
   },
   {
    "id": "15.4.4.20-9-b-3",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-b-3.js",
    "description": "Array.prototype.filter - deleted properties in step 2 are visible here",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n        var obj = { 2: 6.99, 8: 19 };\n\n        Object.defineProperty(obj, \"length\", {\n            get: function () {\n                delete obj[2];\n                return 10;\n            },\n            configurable: true\n        });\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] !== 6.99;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty))"
   },
   {
    "id": "15.4.4.20-9-b-4",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-b-4.js",
    "description": "Array.prototype.filter - properties added into own object after current position are visited on an Array-like object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = { length: 2 };\n\n        Object.defineProperty(obj, \"0\", {\n            get: function () {\n                Object.defineProperty(obj, \"1\", {\n                    get: function () {\n                        return 6.99;\n                    },\n                    configurable: true\n                });\n                return 0;\n            },\n            configurable: true\n        });\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 2 && newArr[1] === 6.99;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnObjects())"
   },
   {
    "id": "15.4.4.20-9-b-5",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-b-5.js",
    "description": "Array.prototype.filter - properties added into own object after current position are visited on an Array",
    "test": "assertTrue((function testcase() {\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var arr = [0, , 2];\n\n        Object.defineProperty(arr, \"0\", {\n            get: function () {\n                Object.defineProperty(arr, \"1\", {\n                    get: function () {\n                        return 6.99;\n                    },\n                    configurable: true\n                });\n                return 0;\n            },\n            configurable: true\n        });\n\n        var newArr = arr.filter(callbackfn);\n\n        return newArr.length === 3 && newArr[1] === 6.99;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-b-6",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-b-6.js",
    "description": "Array.prototype.filter - properties can be added to prototype after current position are visited on an Array-like object",
    "test": "assertTrue((function testcase() {\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n        var obj = { length: 2 };\n\n        try {\n            Object.defineProperty(obj, \"0\", {\n                get: function () {\n                    Object.defineProperty(Object.prototype, \"1\", {\n                        get: function () {\n                            return 6.99;\n                        },\n                        configurable: true\n                    });\n                    return 0;\n                },\n                configurable: true\n            });\n\n            var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n            return newArr.length === 2 && Array[1] === 6.99;\n        } finally {\n            delete Object.prototype[1];\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnObjects())"
   },
   {
    "id": "15.4.4.20-9-b-7",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-b-7.js",
    "description": "Array.prototype.filter - properties can be added to prototype after current position are visited on an Array",
    "test": "assertTrue((function testcase() {\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n        var arr = [0, , 2];\n\n        try {\n            Object.defineProperty(arr, \"0\", {\n                get: function () {\n                    Object.defineProperty(Array.prototype, \"1\", {\n                        get: function () {\n                            return 6.99;\n                        },\n                        configurable: true\n                    });\n                    return 0;\n                },\n                configurable: true\n            });\n\n            var newArr = arr.filter(callbackfn);\n\n            return newArr.length === 3 && newArr[1] === 6.99;\n        } finally {\n            delete Array.prototype[1];\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && ![, 1].hasOwnProperty(0) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-b-8",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-b-8.js",
    "description": "Array.prototype.filter - deleting own property causes index property not to be visited on an Array-like object",
    "test": "assertTrue((function testcase() {\n        var accessed = false;\n        var obj = { length: 2 };\n\n        function callbackfn(val, idx, o) {\n            accessed = true;\n            return true;\n        }\n\n        Object.defineProperty(obj, \"1\", {\n            get: function () {\n                return 6.99;\n            },\n            configurable: true\n        });\n\n        Object.defineProperty(obj, \"0\", {\n            get: function () {\n                delete obj[1];\n                return 0;\n            },\n            configurable: true\n        });\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 0;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnObjects())"
   },
   {
    "id": "15.4.4.20-9-b-9",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-b-9.js",
    "description": "Array.prototype.filter - deleting own property causes index property not to be visited on an Array",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n        var arr = [1, 2];\n\n        Object.defineProperty(arr, \"1\", {\n            get: function () {\n                return \"6.99\";\n            },\n            configurable: true\n        });\n\n        Object.defineProperty(arr, \"0\", {\n            get: function () {\n                delete arr[1];\n                return 0;\n            },\n            configurable: true\n        });\n\n        var newArr = arr.filter(callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 0;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-c-i-1",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-1.js",
    "description": "Array.prototype.filter - element to be retrieved is own data property on an Array-like object",
    "test": "assertTrue((function testcase() {\n\n        var kValue = {};\n        function callbackfn(val, idx, obj) {\n            return (idx === 5) && (val === kValue);\n        }\n\n        var obj = { 5: kValue, length: 100 };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === kValue;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-i-10",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-10.js",
    "description": "Array.prototype.filter - element to be retrieved is own accessor property on an Array",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return idx === 2 && val === 12;\n        }\n\n        var arr = [];\n\n        Object.defineProperty(arr, \"2\", {\n            get: function () {\n                return 12;\n            },\n            configurable: true\n        });\n        var newArr = arr.filter(callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 12;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-c-i-11",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-11.js",
    "description": "Array.prototype.filter - element to be retrieved is own accessor property that overrides an inherited data property on an Array-like object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return idx === 0 && val === 11;\n        }\n\n        var proto = { 0: 5, 1: 6 };\n\n        var Con = function () { };\n        Con.prototype = proto;\n\n        var child = new Con();\n        child.length = 10;\n\n        Object.defineProperty(child, \"0\", {\n            get: function () {\n                return 11;\n            },\n            configurable: true\n        });\n        var newArr = Array.prototype.filter.call(child, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnObjects())"
   },
   {
    "id": "15.4.4.20-9-c-i-12",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-12.js",
    "description": " Array.prototype.filter - element to be retrieved is own accessor property that overrides an inherited data property on an Array",
    "test": "assertTrue((function testcase() {\n        function callbackfn(val, idx, obj) {\n            return val === 111 && idx === 0;\n        }\n\n        var arr = [];\n        try {\n            Array.prototype[0] = 10;\n\n            Object.defineProperty(arr, \"0\", {\n                get: function () {\n                    return 111;\n                },\n                configurable: true\n            });\n            var newArr = arr.filter(callbackfn);\n\n            return newArr.length === 1 && newArr[0] === 111;\n        } finally {\n            delete Array.prototype[0];\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-c-i-13",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-13.js",
    "description": "Array.prototype.filter - element to be retrieved is own accessor property that overrides an inherited accessor property on an Array-like object",
    "test": "assertTrue((function testcase() {\n        function callbackfn(val, idx, obj) {\n            return idx === 1 && val === 12;\n        }\n\n        var proto = {};\n\n        Object.defineProperty(proto, \"1\", {\n            get: function () {\n                return 6;\n            },\n            configurable: true\n        });\n\n        var Con = function () { };\n        Con.prototype = proto;\n\n        var child = new Con();\n        child.length = 10;\n\n        Object.defineProperty(child, \"1\", {\n            get: function () {\n                return 12;\n            },\n            configurable: true\n        });\n        var newArr = Array.prototype.filter.call(child, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 12;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnObjects())"
   },
   {
    "id": "15.4.4.20-9-c-i-14",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-14.js",
    "description": " Array.prototype.filter - element to be retrieved is own accessor property that overrides an inherited accessor property on an Array",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return idx === 0 && val === 11;\n        }\n\n        var arr = [];\n        try {\n            Object.defineProperty(Array.prototype, \"0\", {\n                get: function () {\n                    return 5;\n                },\n                configurable: true\n            });\n\n            Object.defineProperty(arr, \"0\", {\n                get: function () {\n                    return 11;\n                },\n                configurable: true\n            });\n            var newArr = arr.filter(callbackfn);\n\n            return newArr.length === 1 && newArr[0] === 11;\n        } finally {\n            delete Array.prototype[0];\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-c-i-15",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-15.js",
    "description": "Array.prototype.filter - element to be retrieved is inherited accessor property on an Array-like object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return val === 11 && idx === 1;\n        }\n\n        var proto = {};\n\n        Object.defineProperty(proto, \"1\", {\n            get: function () {\n                return 11;\n            },\n            configurable: true\n        });\n\n        var Con = function () { };\n        Con.prototype = proto;\n\n        var child = new Con();\n        child.length = 20;\n        var newArr = Array.prototype.filter.call(child, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnObjects())"
   },
   {
    "id": "15.4.4.20-9-c-i-16",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-16.js",
    "description": "Array.prototype.filter - element to be retrieved is inherited accessor property on an Array",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return idx === 0 && val === 11;\n        }\n\n        try {\n            Object.defineProperty(Array.prototype, \"0\", {\n                get: function () {\n                    return 11;\n                },\n                configurable: true\n            });\n            var newArr = [, , , ].filter(callbackfn);\n\n            return newArr.length === 1 && newArr[0] === 11;\n        } finally {\n            delete Array.prototype[0];\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && ![, 1].hasOwnProperty(0) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-c-i-17",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-17.js",
    "description": "Array.prototype.filter - element to be retrieved is own accessor property without a get function on an Array-like object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return undefined === val && idx === 1;\n        }\n\n        var obj = { length: 2 };\n        Object.defineProperty(obj, \"1\", {\n            set: function () { },\n            configurable: true\n        });\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === undefined;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnObjects())"
   },
   {
    "id": "15.4.4.20-9-c-i-18",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-18.js",
    "description": "Array.prototype.filter - element to be retrieved is own accessor property without a get function on an Array",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return undefined === val && idx === 0;\n        }\n\n        var arr = [];\n\n        Object.defineProperty(arr, \"0\", {\n            set: function () { },\n            configurable: true\n        });\n\n        var newArr = arr.filter(callbackfn);\n\n        return newArr.length === 1 && newArr[0] === undefined;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-c-i-19",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-19.js",
    "description": "Array.prototype.filter - element to be retrieved is own accessor property without a get function that overrides an inherited accessor property on an Array-like object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return undefined === val && idx === 1;\n        }\n\n        var obj = { length: 2 };\n        Object.defineProperty(obj, \"1\", {\n            set: function () { },\n            configurable: true\n        });\n        try {\n            Object.prototype[1] = 10;\n            var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n            return newArr.length === 1 && newArr[0] === undefined;\n        } finally {\n            delete Object.prototype[1];\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnObjects())"
   },
   {
    "id": "15.4.4.20-9-c-i-2",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-2.js",
    "description": "Array.prototype.filter - element to be retrieved is own data property on an Array",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            if (idx === 0) {\n                return val === 11;\n            }\n        }\n\n        var newArr = [11].filter(callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-i-20",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-20.js",
    "description": "Array.prototype.filter - element to be retrieved is own accessor property without a get function that overrides an inherited accessor property on an Array",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return undefined === val && idx === 0;\n        }\n\n        var arr = [];\n\n        Object.defineProperty(arr, \"0\", {\n            set: function () { },\n            configurable: true\n        });\n\n        try {\n            Array.prototype[0] = 100;\n            var newArr = arr.filter(callbackfn);\n\n            return newArr.length === 1 && newArr[0] === undefined;\n        } finally {\n            delete Array.prototype[0];\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-c-i-21",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-21.js",
    "description": "Array.prototype.filter - element to be retrieved is inherited accessor property without a get function on an Array-like object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return val === undefined && idx === 1;\n        }\n\n        var proto = {};\n        Object.defineProperty(proto, \"1\", {\n            set: function () { },\n            configurable: true\n        });\n\n        var Con = function () { };\n        Con.prototype = proto;\n\n        var child = new Con();\n        child.length = 2;\n        var newArr = Array.prototype.filter.call(child, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === undefined;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnObjects())"
   },
   {
    "id": "15.4.4.20-9-c-i-22",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-22.js",
    "description": "Array.prototype.filter - element to be retrieved is inherited accessor property without a get function on an Array",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return undefined === val && idx === 0;\n        }\n\n        try {\n            Object.defineProperty(Array.prototype, \"0\", {\n                set: function () { },\n                configurable: true\n            });\n            var newArr = [, ].filter(callbackfn);\n\n            return newArr.length === 1 && newArr[0] === undefined;\n        } finally {\n            delete Array.prototype[0];\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && ![, 1].hasOwnProperty(0) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-c-i-23",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-23.js",
    "description": "Array.prototype.filter - This object is the global object which contains index property",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return idx === 0 && val === 11;\n        }\n\n        try {\n            var oldLen = fnGlobalObject().length;\n            fnGlobalObject()[0] = 11;\n            fnGlobalObject().length = 1;\n            var newArr = Array.prototype.filter.call(fnGlobalObject(), callbackfn);\n            return newArr.length === 1 && newArr[0] === 11;\n        } finally {\n            delete fnGlobalObject()[0];\n            fnGlobalObject().length = oldLen;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-i-25",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-25.js",
    "description": "Array.prototype.filter - This object is the Arguments object which implements its own property get method (number of arguments is less than number of parameters)",
    "test": "assertTrue((function testcase() {\n        function callbackfn(val, idx, obj) {\n            return val === 11 && idx === 0;\n        }\n\n        var func = function (a, b) {\n            return Array.prototype.filter.call(arguments, callbackfn);\n        };\n\n        var newArr = func(11);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-i-26",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-26.js",
    "description": "Array.prototype.filter - This object is the Arguments object which implements its own property get method (number of arguments equals number of parameters)",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            if (idx === 0) {\n                return val === 11;\n            } else if (idx === 1) {\n                return val === 9;\n            } else {\n                return false;\n            }\n        }\n\n        var func = function (a, b) {\n            return Array.prototype.filter.call(arguments, callbackfn);\n        };\n        var newArr = func(11, 9);\n\n        return newArr.length === 2 && newArr[0] === 11 &&\n            newArr[1] === 9;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-i-27",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-27.js",
    "description": "Array.prototype.filter - This object is the Arguments object which implements its own property get method (number of arguments is greater than number of parameters)",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            if (idx === 0) {\n                return val === 11;\n            } else if (idx === 1) {\n                return val === 12;\n            } else if (idx === 2) {\n                return val === 9;\n            } else {\n                return false;\n            }\n        }\n\n        var func = function (a, b) {\n            return Array.prototype.filter.call(arguments, callbackfn);\n        };\n        var newArr = func(11, 12, 9);\n\n        return newArr.length === 3 && newArr[0] === 11 &&\n            newArr[1] === 12 && newArr[2] === 9;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-i-28",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-28.js",
    "description": "Array.prototype.filter - element changed by getter on previous iterations is observed on an Array",
    "test": "assertTrue((function testcase() {\n\n        var preIterVisible = false;\n        var arr = [];\n\n        function callbackfn(val, idx, obj) {\n            return idx === 1 && val === 9;\n        }\n\n        Object.defineProperty(arr, \"0\", {\n            get: function () {\n                preIterVisible = true;\n                return 11;\n            },\n            configurable: true\n        });\n\n        Object.defineProperty(arr, \"1\", {\n            get: function () {\n                if (preIterVisible) {\n                    return 9;\n                } else {\n                    return 11;\n                }\n            },\n            configurable: true\n        });\n        var newArr = arr.filter(callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 9;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-c-i-29",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-29.js",
    "description": "Array.prototype.filter - element changed by getter on previous iterations is observed on an Array-like object",
    "test": "assertTrue((function testcase() {\n        function callbackfn(val, idx, obj) {\n            return val === 9 && idx === 1;\n        }\n\n        var preIterVisible = false;\n        var obj = { length: 2 };\n\n        Object.defineProperty(obj, \"0\", {\n            get: function () {\n                preIterVisible = true;\n                return 11;\n            },\n            configurable: true\n        });\n\n        Object.defineProperty(obj, \"1\", {\n            get: function () {\n                if (preIterVisible) {\n                    return 9;\n                } else {\n                    return 13;\n                }\n            },\n            configurable: true\n        });\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 9;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnObjects())"
   },
   {
    "id": "15.4.4.20-9-c-i-3",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-3.js",
    "description": "Array.prototype.filter - element to be retrieved is own data property that overrides an inherited data property on an Array-like object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return (idx === 5) && (val === \"abc\");\n        }\n\n        var proto = { 0: 11, 5: 100 };\n\n        var Con = function () { };\n        Con.prototype = proto;\n\n        var child = new Con();\n        child[5] = \"abc\";\n        child.length = 10;\n\n        var newArr = Array.prototype.filter.call(child, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === \"abc\";\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-i-30",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-30.js",
    "description": "Array.prototype.filter - unnhandled exceptions happened in getter terminate iteration on an Array-like object",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        function callbackfn(val, idx, obj) {\n            if (idx > 1) {\n                accessed = true;\n            }\n            return true;\n        }\n\n        var obj = { 0: 11, 5: 10, 10: 8, length: 20 };\n        Object.defineProperty(obj, \"1\", {\n            get: function () {\n                throw new RangeError(\"unhandle exception happened in getter\");\n            },\n            configurable: true\n        });\n\n        try {\n            Array.prototype.filter.call(obj, callbackfn);\n            return false;\n        } catch (ex) {\n            return (ex instanceof RangeError) && !accessed;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnObjects())"
   },
   {
    "id": "15.4.4.20-9-c-i-31",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-31.js",
    "description": "Array.prototype.filter - unnhandled exceptions happened in getter terminate iteration on an Array",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n        function callbackfn(val, idx, obj) {\n            if (idx > 1) {\n                accessed = true;\n            }\n            return true;\n        }\n\n        var arr = [];\n        arr[5] = 10;\n        arr[10] = 100;\n\n        Object.defineProperty(arr, \"1\", {\n            get: function () {\n                throw new RangeError(\"unhandle exception happened in getter\");\n            },\n            configurable: true\n        });\n\n        try {\n            arr.filter(callbackfn);\n            return false;\n        } catch (ex) {\n            return (ex instanceof RangeError) && !accessed;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-c-i-4",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-4.js",
    "description": "Array.prototype.filter - element to be retrieved is own data property that overrides an inherited data property on an Array",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return (idx === 0) && (val === 12);\n        }\n\n        try {\n            Array.prototype[0] = 11;\n            var newArr = [12].filter(callbackfn);\n\n            return newArr.length === 1 && newArr[0] === 12;\n        } finally {\n            delete Array.prototype[0];\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-i-5",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-5.js",
    "description": "Array.prototype.filter - element to be retrieved is own data property that overrides an inherited accessor property on an Array-like object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return idx === 0 && val === 11;\n        }\n\n        var proto = {};\n\n        Object.defineProperty(proto, \"0\", {\n            get: function () {\n                return 5;\n            },\n            configurable: true\n        });\n\n        var Con = function () { };\n        Con.prototype = proto;\n\n        var child = new Con();\n        child.length = 2;\n        Object.defineProperty(child, \"0\", {\n            value: 11,\n            configurable: true\n        });\n        child[1] = 12;\n\n        var newArr = Array.prototype.filter.call(child, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnObjects())"
   },
   {
    "id": "15.4.4.20-9-c-i-6",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-6.js",
    "description": "Array.prototype.filter - element to be retrieved is own data property that overrides an inherited accessor property on an Array",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return val === 11;\n        }\n\n        try {\n            Object.defineProperty(Array.prototype, \"0\", {\n                get: function () {\n                    return 9;\n                },\n                configurable: true\n            });\n            var newArr = [11].filter(callbackfn);\n\n            return newArr.length === 1 && newArr[0] === 11;\n        } finally {\n            delete Array.prototype[0];\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnArrays())"
   },
   {
    "id": "15.4.4.20-9-c-i-7",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-7.js",
    "description": "Array.prototype.filter - element to be retrieved is inherited data property on an Array-like object",
    "test": "assertTrue((function testcase() {\n\n        var kValue = 'abc';\n\n        function callbackfn(val, idx, obj) {\n            return (idx === 5) && (val === kValue);\n        }\n\n        var proto = { 5: kValue };\n\n        var Con = function () { };\n        Con.prototype = proto;\n\n        var child = new Con();\n        child.length = 10;\n\n        var newArr = Array.prototype.filter.call(child, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === kValue;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-i-8",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-8.js",
    "description": "Array.prototype.filter - element to be retrieved is inherited data property on an Array",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return (idx === 1) && (val === 13);\n        }\n\n        try {\n            Array.prototype[1] = 13;\n            var newArr = [, , , ].filter(callbackfn);\n\n            return newArr.length === 1 && newArr[0] === 13;\n        } finally {\n            delete Array.prototype[1];\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && ![, 1].hasOwnProperty(0))"
   },
   {
    "id": "15.4.4.20-9-c-i-9",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-i-9.js",
    "description": "Array.prototype.filter - element to be retrieved is own accessor property on an Array-like object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return (idx === 0) && (val === 11);\n        }\n\n        var obj = { 10: 10, length: 20 };\n\n        Object.defineProperty(obj, \"0\", {\n            get: function () {\n                return 11;\n            },\n            configurable: true\n        });\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnObjects())"
   },
   {
    "id": "15.4.4.20-9-c-ii-1",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-1.js",
    "description": "Array.prototype.filter - callbackfn called with correct parameters",
    "test": "assertTrue((function testcase() { \n \n  var bPar = true;\n  var bCalled = false;\n  function callbackfn(val, idx, obj)\n  {\n    bCalled = true;\n    if(obj[idx] !== val)\n      bPar = false;\n  }\n\n  var srcArr = [0,1,true,null,new Object(),\"five\"];\n  srcArr[999999] = -6.6;\n  var resArr = srcArr.filter(callbackfn);\n  \n  if(bCalled === true && bPar === true)\n    return true;\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-10",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-10.js",
    "description": "Array.prototype.filter - callbackfn is called with 1 formal parameter",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val) {\n            return val > 10;\n        }\n        var newArr = [12].filter(callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 12;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-11",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-11.js",
    "description": "Array.prototype.filter - callbackfn is called with 2 formal parameter",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx) {\n            return val > 10 && arguments[2][idx] === val;\n        }\n        var newArr = [11].filter(callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-12",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-12.js",
    "description": "Array.prototype.filter - callbackfn is called with 3 formal parameter",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return val > 10 && obj[idx] === val;\n        }\n        var newArr = [11].filter(callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-13",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-13.js",
    "description": "Array.prototype.filter - callbackfn that uses arguments object to get parameter value",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn() {\n            return arguments[2][arguments[1]] === arguments[0];\n        }\n        var newArr = [11].filter(callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-16",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-16.js",
    "description": "Array.prototype.filter - 'this' of 'callbackfn' is a Boolean object when T is not an object (T is a boolean)",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return this.valueOf() === false;\n        }\n\n        var obj = { 0: 11, length: 2 };\n        var newArr = Array.prototype.filter.call(obj, callbackfn, false);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-17",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-17.js",
    "description": "Array.prototype.filter -'this' of 'callbackfn' is a Number object when T is not an object (T is a number)",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, o) {\n            return 5 === this.valueOf();\n        }\n\n        var obj = { 0: 11, length: 2 };\n        var newArr = Array.prototype.filter.call(obj, callbackfn, 5);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-18",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-18.js",
    "description": "Array.prototype.filter - 'this' of 'callbackfn' is an String object when T is not an object (T is a string)",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return 'hello' === this.valueOf();\n        }\n\n        var obj = { 0: 11, length: 2 };\n        var newArr = Array.prototype.filter.call(obj, callbackfn, \"hello\");\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-19",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-19.js",
    "description": "Array.prototype.filter - non-indexed properties are not called",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return val === 8;\n        }\n\n        var obj = { 0: 11, non_index_property: 8, 2: 5, length: 20 };\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 0 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-2",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-2.js",
    "description": "Array.prototype.filter - callbackfn takes 3 arguments",
    "test": "assertTrue((function testcase() { \n \n  var parCnt = 3;\n  var bCalled = false\n  function callbackfn(val, idx, obj)\n  { \n    bCalled = true;\n    if(arguments.length !== 3)\n      parCnt = arguments.length;   //verify if callbackfn was called with 3 parameters\n  }\n\n  var srcArr = [0,1,2,3,4,5,6,7,8,9];\n  var resArr = srcArr.filter(callbackfn);\n  if(bCalled === true && parCnt === 3)\n    return true;\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-20",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-20.js",
    "description": "Array.prototype.filter - callbackfn called with correct parameters (thisArg is correct)",
    "test": "assertTrue((function testcase() {\n\n        var thisArg = { threshold: 10 };\n\n        function callbackfn(val, idx, obj) {\n            return this === thisArg;\n        }\n\n        var obj = { 0: 11, length: 1 };\n        var newArr = Array.prototype.filter.call(obj, callbackfn, thisArg);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-21",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-21.js",
    "description": "Array.prototype.filter - callbackfn called with correct parameters (kValue is correct)",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            if (idx === 0) {\n                return val === 11;\n            }\n\n            if (idx === 1) {\n                return val === 12;\n            }\n\n            return false;\n        }\n\n        var obj = { 0: 11, 1: 12, length: 2 };\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 2 && newArr[0] === 11 && newArr[1] === 12;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-22",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-22.js",
    "description": "Array.prototype.filter - callbackfn called with correct parameters (the index k is correct)",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            if (val === 11) {\n                return idx === 0;\n            }\n\n            if (val === 12) {\n                return idx === 1;\n            }\n\n            return false;\n        }\n\n        var obj = { 0: 11, 1: 12, length: 2 };\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 2 && newArr[0] === 11 && newArr[1] === 12;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-23",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-23.js",
    "description": "Array.prototype.filter - callbackfn called with correct parameters (this object O is correct)",
    "test": "assertTrue((function testcase() {\n\n        var obj = { 0: 11, length: 2 };\n\n        function callbackfn(val, idx, o) {\n            return obj === o;\n        }\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-4",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-4.js",
    "description": "Array.prototype.filter - k values are passed in ascending numeric order",
    "test": "assertTrue((function testcase() {\n\n        var arr = [0, 1, 2, 3, 4, 5];\n        var lastIdx = 0;\n        var called = 0;\n        function callbackfn(val, idx, o) {\n            called++;\n            if (lastIdx !== idx) {\n                return false;\n            } else {\n                lastIdx++;\n                return true;\n            }\n        }\n        var newArr = arr.filter(callbackfn);\n\n        return newArr.length === called;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-5",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-5.js",
    "description": "Array.prototype.filter - k values are accessed during each iteration and not prior to starting the loop on an Array",
    "test": "assertTrue((function testcase() {\n\n        var kIndex = [];\n        var called = 0;\n\n        //By below way, we could verify that k would be setted as 0, 1, ..., length - 1 in order, and each value will be setted one time.\n        function callbackfn(val, idx, obj) {\n            called++;\n            //Each position should be visited one time, which means k is accessed one time during iterations.\n            if (kIndex[idx] === undefined) {\n                //when current position is visited, its previous index should has been visited.\n                if (idx !== 0 && kIndex[idx - 1] === undefined) {\n                    return true;\n                }\n                kIndex[idx] = 1;\n                return false;\n            } else {\n                return true;\n            }\n        }\n        var newArr = [11, 12, 13, 14].filter(callbackfn, undefined);\n\n        return newArr.length === 0 && called === 4;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-6",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-6.js",
    "description": "Array.prototype.filter - arguments to callbackfn are self consistent",
    "test": "assertTrue((function testcase() {\n\n        var obj = { 0: 11, length: 1 };\n        var thisArg = {};\n\n        function callbackfn() {\n            return this === thisArg &&\n                arguments[0] === 11 &&\n                arguments[1] === 0 &&\n                arguments[2] === obj;\n        }\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn, thisArg);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-7",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-7.js",
    "description": "Array.prototype.filter - unhandled exceptions happened in callbackfn terminate iteration",
    "test": "assertTrue((function testcase() {\n\n        var called = 0;\n\n        function callbackfn(val, idx, obj) {\n            called++;\n            if (called === 1) {\n                throw new Error(\"Exception occurred in callbackfn\");\n            }\n            return true;\n        }\n\n        var obj = { 0: 11, 4: 10, 10: 8, length: 20 };\n\n        try {\n            Array.prototype.filter.call(obj, callbackfn);\n            return false;\n        } catch (ex) {\n            return 1 === called && ex instanceof Error;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-8",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-8.js",
    "description": "Array.prototype.filter - element changed by callbackfn on previous iterations is observed",
    "test": "assertTrue((function testcase() {\n\n        var obj = { 0: 11, 1: 12, length: 2 };\n\n        function callbackfn(val, idx, o) {\n            if (idx === 0) {\n                obj[idx + 1] = 8;\n            }\n            return val > 10;\n        }\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-ii-9",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-ii-9.js",
    "description": "Array.prototype.filter - callbackfn is called with 0 formal parameter",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn() {\n            return true;\n        }\n        var newArr = [11].filter(callbackfn);\n\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-1-1",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-1-1.js",
    "description": "Array.prototype.filter - value of returned array element equals to 'kValue'",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = { 0: 11, 1: 9, length: 2 };\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        return newArr[0] === obj[0] && newArr[1] === obj[1];\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-1-2",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-1-2.js",
    "description": "Array.prototype.filter - value of returned array element can be overwritten",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = { 0: 11, 1: 9, length: 2 };\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        try {\n            var tempVal = newArr[1];\n            newArr[1] += 1;\n            return newArr[1] !== tempVal;\n        } catch (ex) {\n            return false;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-1-3",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-1-3.js",
    "description": "Array.prototype.filter - value of returned array element can be enumerated",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = { 0: 11, length: 2 };\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        var prop;\n        var enumerable = false;\n        for (prop in newArr) {\n            if (newArr.hasOwnProperty(prop)) {\n                if (prop === \"0\") {\n                    enumerable = true;\n                }\n            }\n        }\n\n        return enumerable;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-1-4",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-1-4.js",
    "description": "Array.prototype.filter - value of returned array element can be changed or deleted",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = { 0: 11, 1: 9, length: 2 };\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n\n        try {\n            var tempVal = newArr[1];\n            delete newArr[1];\n            return tempVal !== undefined && newArr[1] === undefined;\n        } catch (ex) {\n            return false;\n        }\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-1-5",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-1-5.js",
    "description": "Array.prototype.filter - values of 'to' are passed in acending numeric order",
    "test": "assertTrue((function testcase() {\n\n        var arr = [0, 1, 2, 3, 4];\n        var lastToIdx = 0;\n        var called = 0;\n        function callbackfn(val, idx, obj) {\n            called++;\n            if (lastToIdx !== idx) {\n                return false;\n            } else {\n                lastToIdx++;\n                return true;\n            }\n        }\n        var newArr = arr.filter(callbackfn);\n\n        return newArr.length === 5 && called === 5;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-1-6",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-1-6.js",
    "description": "Array.prototype.filter - values of 'to' are accessed during each iteration when 'selected' is converted to true and not prior to starting the loop",
    "test": "assertTrue((function testcase() {\n\n        var toIndex = [];\n        var called = 0;\n\n        //By below way, we could verify that 'to' would be setted as 0, 1, ..., length - 1 in order, and each value will be setted one time.\n        function callbackfn(val, idx, obj) {\n            called++;\n            //Each position should be visited one time, which means 'to' is accessed one time during iterations.\n            if (toIndex[idx] === undefined) {\n                //when current position is visited, its previous index should has been visited.\n                if (idx !== 0 && toIndex[idx - 1] === undefined) {\n                    return false;\n                }\n                toIndex[idx] = 1;\n                return true;\n            } else {\n                return false;\n            }\n        }\n        var newArr = [11, 12, 13, 14].filter(callbackfn, undefined);\n\n        return newArr.length === 4 && called === 4;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-1",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-1.js",
    "description": "Array.prototype.filter - getOwnPropertyDescriptor(all true) of returned array element",
    "test": "assertTrue((function testcase() {\n  \n  function callbackfn(val, idx, obj){\n    if(val % 2)\n      return true; \n    else\n      return false;\n  }\n  var srcArr = [0,1,2,3,4];\n  var resArr = srcArr.filter(callbackfn);\n  if (resArr.length > 0){\n     var desc = Object.getOwnPropertyDescriptor(resArr, 1) \n     if(desc.value === 3 &&        //srcArr[1] = true\n       desc.writable === true &&\n       desc.enumerable === true &&\n       desc.configurable === true){\n         return true;\n    }\n  }\n }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-10",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-10.js",
    "description": "Array.prototype.filter return value of callbackfn is a number (value is negative number)",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return -5;\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-11",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-11.js",
    "description": "Array.prototype.filter return value of callbackfn is a number (value is Infinity)",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return Infinity;\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-12",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-12.js",
    "description": "Array.prototype.filter return value of callbackfn is a number (value is -Infinity)",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return -Infinity;\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-13",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-13.js",
    "description": "Array.prototype.filter return value of callbackfn is a number (value is NaN)",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return NaN;\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 0 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-14",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-14.js",
    "description": "Array.prototype.filter return value of callbackfn is an empty string",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return \"\";\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 0 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-15",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-15.js",
    "description": "Array.prototype.filter return value of callbackfn is a non-empty string",
    "test": "assertTrue((function testcase() {\n    \n        function callbackfn(val, idx, obj) {\n            return \"non-empty string\";\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-16",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-16.js",
    "description": "Array.prototype.filter return value of callbackfn is a Function object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return function () { };\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-17",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-17.js",
    "description": "Array.prototype.filter return value of callbackfn is an Array object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return new Array(10);\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-18",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-18.js",
    "description": "Array.prototype.filter return value of callbackfn is a String object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return new String();\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-19",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-19.js",
    "description": "Array.prototype.filter return value of callbackfn is a Boolean object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return new Boolean();\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-2",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-2.js",
    "description": "Array.prototype.filter - return value of callbackfn is undefined",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        function callbackfn(val, idx, o) {\n            accessed = true;\n            return undefined;\n        }\n\n        var obj = { 0: 11, length: 1 };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n        return  newArr.length === 0 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-20",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-20.js",
    "description": "Array.prototype.filter - return value of callbackfn is a Number object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return new Number();\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-21",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-21.js",
    "description": "Array.prototype.filter - return value of callbackfn is the Math object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return Math;\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-22",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-22.js",
    "description": "Array.prototype.filter - return value of callbackfn is a Date object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return new Date();\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-23",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-23.js",
    "description": "Array.prototype.filter - return value of callbackfn is a RegExp object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return new RegExp();\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-24",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-24.js",
    "description": "Array.prototype.filter - return value of callbackfn is the JSON object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return JSON;\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-25",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-25.js",
    "description": "Array.prototype.filter - return value of callbackfn is an Error object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return new EvalError();\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-26",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-26.js",
    "description": "Array.prototype.filter - return value of callbackfn is the Arguments object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return arguments;\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-28",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-28.js",
    "description": "Array.prototype.filter - return value of callbackfn is the global object",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return fnGlobalObject();\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-29",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-29.js",
    "description": "Array.prototype.filter - false prevents element added to output Array",
    "test": "assertTrue((function testcase() {\n\n        var called = 0;\n\n        function callbackfn(val, idx, obj) {\n            called++;\n            return val > 10;\n        }\n\n        var obj = { 0: 11, 1: 8, length: 20 };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n        return newArr.length === 1 && newArr[0] !== 8 && called === 2;\n\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-3",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-3.js",
    "description": "Array.prototype.filter - return value of callbackfn is null",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return null;\n        }\n\n        var obj = { 0: 11, length: 1 };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n        return newArr.length === 0 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-30",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-30.js",
    "description": "Array.prototype.filter - return value (new Boolean(false)) of callbackfn is treated as true value",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return new Boolean(false);\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-4",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-4.js",
    "description": "Array.prototype.filter - return value of callbackfn is a boolean (value is false)",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return false;\n        }\n\n        var obj = { 0: 11, length: 1 };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n        return newArr.length === 0 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-5",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-5.js",
    "description": "Array.prototype.filter - return value of callbackfn is a boolean (value is true)",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return true;\n        }\n\n        var obj = { 0: 11, length: 1 };\n\n        var newArr = Array.prototype.filter.call(obj, callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-6",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-6.js",
    "description": "Array.prototype.filter - return value of callbackfn is a number (value is 0)",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return 0;\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 0 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-7",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-7.js",
    "description": "Array.prototype.filter - return value of callbackfn is a number (value is +0)",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return +0;\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 0 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-8",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-8.js",
    "description": "Array.prototype.filter - return value of callbackfn is a nunmber (value is -0)",
    "test": "assertTrue((function testcase() {\n\n        var accessed = false;\n\n        function callbackfn(val, idx, obj) {\n            accessed = true;\n            return -0;\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 0 && accessed;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   },
   {
    "id": "15.4.4.20-9-c-iii-9",
    "path": "TestCases/chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-9-c-iii-9.js",
    "description": "Array.prototype.filter - return value of callbackfn is a number (value is positive number)",
    "test": "assertTrue((function testcase() {\n\n        function callbackfn(val, idx, obj) {\n            return 5;\n        }\n\n        var newArr = [11].filter(callbackfn);\n        return newArr.length === 1 && newArr[0] === 11;\n    }).call(this));\n",
    "precondition": "(fnExists(Array.prototype.filter))"
   }
  ]
 }
}