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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code, released
* March 31, 1998.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
gTestfile = '15.5.4.10-1.js';
/**
File Name: 15.5.4.10-1.js
ECMA Section: 15.5.4.10 String.prototype.substring( start, end )
Description:
15.5.4.10 String.prototype.substring(start, end)
Returns a substring of the result of converting this object to a string,
starting from character position start and running to character position
end of the string. The result is a string value, not a String object.
If either argument is NaN or negative, it is replaced with zero; if either
argument is larger than the length of the string, it is replaced with the
length of the string.
If start is larger than end, they are swapped.
When the substring method is called with two arguments start and end, the
following steps are taken:
1. Call ToString, giving it the this value as its argument.
2. Call ToInteger(start).
3. Call ToInteger (end).
4. Compute the number of characters in Result(1).
5. Compute min(max(Result(2), 0), Result(4)).
6. Compute min(max(Result(3), 0), Result(4)).
7. Compute min(Result(5), Result(6)).
8. Compute max(Result(5), Result(6)).
9. Return a string whose length is the difference between Result(8) and
Result(7), containing characters from Result(1), namely the characters
with indices Result(7) through Result(8)1, in ascending order.
Note that the substring function is intentionally generic; it does not require
that its this value be a String object. Therefore it can be transferred to other
kinds of objects for use as a method.
Author: christine@netscape.com
Date: 12 november 1997
*/
var SECTION = "15.5.4.10-1";
var VERSION = "ECMA_1";
startTest();
var TITLE = "String.prototype.substring( start, end )";
writeHeaderToLog( SECTION + " "+ TITLE);
new TestCase( SECTION, "String.prototype.substring.length", 2, String.prototype.substring.length );
new TestCase( SECTION, "delete String.prototype.substring.length", false, delete String.prototype.substring.length );
new TestCase( SECTION, "delete String.prototype.substring.length; String.prototype.substring.length", 2, eval("delete String.prototype.substring.length; String.prototype.substring.length") );
// test cases for when substring is called with no arguments.
// this is a string object
new TestCase( SECTION,
"var s = new String('this is a string object'); typeof s.substring()",
"string",
eval("var s = new String('this is a string object'); typeof s.substring()") );
new TestCase( SECTION,
"var s = new String(''); s.substring(1,0)",
"",
eval("var s = new String(''); s.substring(1,0)") );
new TestCase( SECTION,
"var s = new String('this is a string object'); s.substring(true, false)",
"t",
eval("var s = new String('this is a string object'); s.substring(false, true)") );
new TestCase( SECTION,
"var s = new String('this is a string object'); s.substring(NaN, Infinity)",
"this is a string object",
eval("var s = new String('this is a string object'); s.substring(NaN, Infinity)") );
new TestCase( SECTION,
"var s = new String('this is a string object'); s.substring(Infinity, NaN)",
"this is a string object",
eval("var s = new String('this is a string object'); s.substring(Infinity, NaN)") );
new TestCase( SECTION,
"var s = new String('this is a string object'); s.substring(Infinity, Infinity)",
"",
eval("var s = new String('this is a string object'); s.substring(Infinity, Infinity)") );
new TestCase( SECTION,
"var s = new String('this is a string object'); s.substring(-0.01, 0)",
"",
eval("var s = new String('this is a string object'); s.substring(-0.01,0)") );
new TestCase( SECTION,
"var s = new String('this is a string object'); s.substring(s.length, s.length)",
"",
eval("var s = new String('this is a string object'); s.substring(s.length, s.length)") );
new TestCase( SECTION,
"var s = new String('this is a string object'); s.substring(s.length+1, 0)",
"this is a string object",
eval("var s = new String('this is a string object'); s.substring(s.length+1, 0)") );
new TestCase( SECTION,
"var s = new String('this is a string object'); s.substring(-Infinity, -Infinity)",
"",
eval("var s = new String('this is a string object'); s.substring(-Infinity, -Infinity)") );
// this is not a String object, start is not an integer
new TestCase( SECTION,
"var s = new Array(1,2,3,4,5); s.substring = String.prototype.substring; s.substring(Infinity,-Infinity)",
"1,2,3,4,5",
eval("var s = new Array(1,2,3,4,5); s.substring = String.prototype.substring; s.substring(Infinity,-Infinity)") );
new TestCase( SECTION,
"var s = new Array(1,2,3,4,5); s.substring = String.prototype.substring; s.substring(true, false)",
"1",
eval("var s = new Array(1,2,3,4,5); s.substring = String.prototype.substring; s.substring(true, false)") );
new TestCase( SECTION,
"var s = new Array(1,2,3,4,5); s.substring = String.prototype.substring; s.substring('4', '5')",
"3",
eval("var s = new Array(1,2,3,4,5); s.substring = String.prototype.substring; s.substring('4', '5')") );
// this is an object object
new TestCase( SECTION,
"var obj = new Object(); obj.substring = String.prototype.substring; obj.substring(8,0)",
"[object ",
eval("var obj = new Object(); obj.substring = String.prototype.substring; obj.substring(8,0)") );
new TestCase( SECTION,
"var obj = new Object(); obj.substring = String.prototype.substring; obj.substring(8,obj.toString().length)",
"Object]",
eval("var obj = new Object(); obj.substring = String.prototype.substring; obj.substring(8, obj.toString().length)") );
// this is a function object
new TestCase( SECTION,
"var obj = new Function(); obj.substring = String.prototype.substring; obj.toString = Object.prototype.toString; obj.substring(8, Infinity)",
"Function]",
eval("var obj = new Function(); obj.substring = String.prototype.substring; obj.toString = Object.prototype.toString; obj.substring(8,Infinity)") );
// this is a number object
new TestCase( SECTION,
"var obj = new Number(NaN); obj.substring = String.prototype.substring; obj.substring(Infinity, NaN)",
"NaN",
eval("var obj = new Number(NaN); obj.substring = String.prototype.substring; obj.substring(Infinity, NaN)") );
// this is the Math object
new TestCase( SECTION,
"var obj = Math; obj.substring = String.prototype.substring; obj.substring(Math.PI, -10)",
"[ob",
eval("var obj = Math; obj.substring = String.prototype.substring; obj.substring(Math.PI, -10)") );
// this is a Boolean object
new TestCase( SECTION,
"var obj = new Boolean(); obj.substring = String.prototype.substring; obj.substring(new Array(), new Boolean(1))",
"f",
eval("var obj = new Boolean(); obj.substring = String.prototype.substring; obj.substring(new Array(), new Boolean(1))") );
// this is a user defined object
new TestCase( SECTION,
"var obj = new MyObject( void 0 ); obj.substring(0, 100)",
"undefined",
eval( "var obj = new MyObject( void 0 ); obj.substring(0,100)") );
test();
function MyObject( value ) {
this.value = value;
this.substring = String.prototype.substring;
this.toString = new Function ( "return this.value+''" );
}
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