/* The contents of this file are subject to the Netscape 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/NPL/ * * 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 Netscape are * Copyright (C) 1998 Netscape Communications Corporation. All * Rights Reserved. * * Contributor(s): * */ /** File Name: 15.5.4.4-1.js ECMA Section: 15.5.4.4 String.prototype.charAt(pos) Description: Returns a string containing the character at position pos in the string. If there is no character at that string, the result is the empty string. The result is a string value, not a String object. When the charAt method is called with one argument, pos, the following steps are taken: 1. Call ToString, with this value as its argument 2. Call ToInteger pos 3. Compute the number of characters in Result(1) 4. If Result(2) is less than 0 is or not less than Result(3), return the empty string 5. Return a string of length 1 containing one character from result (1), the character at position Result(2). Note that the charAt 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: 2 october 1997 */ var SECTION = "15.5.4.4-2"; var VERSION = "ECMA_1"; startTest(); var TITLE = "String.prototype.charAt"; writeHeaderToLog( SECTION + " "+ TITLE); var testcases = getTestCases(); test(); function getTestCases() { var array = new Array(); var item = 0; array[item++] = new TestCase( SECTION, "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(0)", "t", eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(0)") ); array[item++] = new TestCase( SECTION, "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(1)", "r", eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(1)") ); array[item++] = new TestCase( SECTION, "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(2)", "u", eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(2)") ); array[item++] = new TestCase( SECTION, "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(3)", "e", eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(3)") ); array[item++] = new TestCase( SECTION, "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(4)", "", eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(4)") ); array[item++] = new TestCase( SECTION, "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(-1)", "", eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(-1)") ); array[item++] = new TestCase( SECTION, "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(true)", "r", eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(true)") ); array[item++] = new TestCase( SECTION, "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(false)", "t", eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(false)") ); array[item++] = new TestCase( SECTION, "x = new String(); x.charAt(0)", "", eval("x=new String();x.charAt(0)") ); array[item++] = new TestCase( SECTION, "x = new String(); x.charAt(1)", "", eval("x=new String();x.charAt(1)") ); array[item++] = new TestCase( SECTION, "x = new String(); x.charAt(-1)", "", eval("x=new String();x.charAt(-1)") ); array[item++] = new TestCase( SECTION, "x = new String(); x.charAt(NaN)", "", eval("x=new String();x.charAt(Number.NaN)") ); array[item++] = new TestCase( SECTION, "x = new String(); x.charAt(Number.POSITIVE_INFINITY)", "", eval("x=new String();x.charAt(Number.POSITIVE_INFINITY)") ); array[item++] = new TestCase( SECTION, "x = new String(); x.charAt(Number.NEGATIVE_INFINITY)", "", eval("x=new String();x.charAt(Number.NEGATIVE_INFINITY)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(0)", "1", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(0)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(1)", "2", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(1)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(2)", "3", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(2)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(3)", "4", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(3)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(4)", "5", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(4)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(5)", "6", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(5)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(6)", "7", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(6)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(7)", "8", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(7)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(8)", "9", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(8)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(9)", "0", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(9)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(10)", "", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(10)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyObject(1234567890); MYOB.charAt(Math.PI)", "4", eval("var MYOB = new MyObject(1234567890); MYOB.charAt(Math.PI)") ); // MyOtherObject.toString will return "[object Object] array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(0)", "[", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(0)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(1)", "o", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(1)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(2)", "b", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(2)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(3)", "j", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(3)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(4)", "e", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(4)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(5)", "c", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(5)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(6)", "t", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(6)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(7)", " ", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(7)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(8)", "O", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(8)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(9)", "b", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(9)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(10)", "j", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(10)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(11)", "e", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(11)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(12)", "c", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(12)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(13)", "t", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(13)") ); array[item++] = new TestCase( SECTION, "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(14)", "]", eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(14)") ); return (array ); } function test() { for ( tc = 0; tc < testcases.length; tc++ ) { testcases[tc].passed = writeTestCaseResult( testcases[tc].expect, testcases[tc].actual, testcases[tc].description +" = "+ testcases[tc].actual ); testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value " } stopTest(); return ( testcases ); } function MyObject( value ) { this.value = value; this.valueOf = new Function( "return this.value;" ); this.toString = new Function( "return this.value +''" ); this.charAt = String.prototype.charAt; } function MyOtherObject(value) { this.value = value; this.valueOf = new Function( "return this.value;" ); this.charAt = String.prototype.charAt; }