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// Copyright 2011 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Flags: --expose-natives-as=builtins
// Checks that all function properties of the builtin object that are actually
// constructors (recognized by having properties on their .prototype object),
// have only unconfigurable properties on the prototype, and the methods
// are also non-writable.
var names = Object.getOwnPropertyNames(builtins);
function isFunction(obj) {
return typeof obj == "function";
}
function checkConstructor(func, name) {
// A constructor is a function with a prototype and properties on the
// prototype object besides "constructor";
if (name.charAt(0) == "$") return;
if (typeof func.prototype != "object") return;
var propNames = Object.getOwnPropertyNames(func.prototype);
if (propNames.length == 0 ||
(propNames.length == 1 && propNames[0] == "constructor")) {
// Not a constructor.
return;
}
var proto_desc = Object.getOwnPropertyDescriptor(func, "prototype");
assertTrue(proto_desc.hasOwnProperty("value"), name);
assertFalse(proto_desc.writable, name);
assertFalse(proto_desc.configurable, name);
var prototype = proto_desc.value;
assertEquals(null, Object.getPrototypeOf(prototype), name);
for (var i = 0; i < propNames.length; i++) {
var propName = propNames[i];
if (propName == "constructor") continue;
var testName = name + "-" + propName;
var propDesc = Object.getOwnPropertyDescriptor(prototype, propName);
assertTrue(propDesc.hasOwnProperty("value"), testName);
assertFalse(propDesc.configurable, testName);
if (isFunction(propDesc.value)) {
assertFalse(propDesc.writable, testName);
}
}
}
for (var i = 0; i < names.length; i++) {
var name = names[i];
var desc = Object.getOwnPropertyDescriptor(builtins, name);
assertTrue(desc.hasOwnProperty("value"));
var value = desc.value;
if (isFunction(value)) {
checkConstructor(value, name);
}
}
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