1 /* The contents of this file are subject to the Netscape Public 2 * License Version 1.1 (the "License"); you may not use this file 3 * except in compliance with the License. You may obtain a copy of 4 * the License at http://www.mozilla.org/NPL/ 5 * 6 * Software distributed under the License is distributed on an "AS 7 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or 8 * implied. See the License for the specific language governing 9 * rights and limitations under the License. 10 * 11 * The Original Code is Mozilla Communicator client code, released March 12 * 31, 1998. 13 * 14 * The Initial Developer of the Original Code is Netscape Communications 15 * Corporation. Portions created by Netscape are 16 * Copyright (C) 1998 Netscape Communications Corporation. All 17 * Rights Reserved. 18 * 19 * Contributor(s): 20 * 21 */ 22 /** 23 File Name: 15.5.4.5-6.js 24 ECMA Section: 15.5.4.5 String.prototype.charCodeAt(pos) 25 Description: Returns a number (a nonnegative integer less than 2^16) 26 representing the Unicode encoding of the character at 27 position pos in this string. If there is no character 28 at that position, the number is NaN. 29 30 When the charCodeAt method is called with one argument 31 pos, the following steps are taken: 32 1. Call ToString, giving it the theis value as its 33 argument 34 2. Call ToInteger(pos) 35 3. Compute the number of characters in result(1). 36 4. If Result(2) is less than 0 or is not less than 37 Result(3), return NaN. 38 5. Return a value of Number type, of positive sign, whose 39 magnitude is the Unicode encoding of one character 40 from result 1, namely the characer at position Result 41 (2), where the first character in Result(1) is 42 considered to be at position 0. 43 44 Note that the charCodeAt funciton is intentionally 45 generic; it does not require that its this value be a 46 String object. Therefore it can be transferred to other 47 kinds of objects for use as a method. 48 49 Author: christine (at) netscape.com 50 Date: 2 october 1997 51 */ 52 var SECTION = "15.5.4.5-6"; 53 var VERSION = "ECMA_2"; 54 startTest(); 55 var TITLE = "String.prototype.charCodeAt"; 56 57 writeHeaderToLog( SECTION + " "+ TITLE); 58 59 var testcases = getTestCases(); 60 test(); 61 62 function getTestCases() { 63 var array = new Array(); 64 var item = 0; 65 66 array[item++] = new TestCase( SECTION, 67 "var obj = true; obj.__proto__.charCodeAt = String.prototype.charCodeAt; var s = ''; for ( var i = 0; i < 4; i++ ) s+= String.fromCharCode( obj.charCodeAt(i) ); s", 68 "true", 69 eval("var obj = true; obj.__proto__.charCodeAt = String.prototype.charCodeAt; var s = ''; for ( var i = 0; i < 4; i++ ) s+= String.fromCharCode( obj.charCodeAt(i) ); s") ); 70 71 array[item++] = new TestCase( SECTION, 72 "var obj = 1234; obj.__proto__.charCodeAt = String.prototype.charCodeAt; var s = ''; for ( var i = 0; i < 4; i++ ) s+= String.fromCharCode( obj.charCodeAt(i) ); s", 73 "1234", 74 eval("var obj = 1234; obj.__proto__.charCodeAt = String.prototype.charCodeAt; var s = ''; for ( var i = 0; i < 4; i++ ) s+= String.fromCharCode( obj.charCodeAt(i) ); s") ); 75 76 array[item++] = new TestCase( SECTION, 77 "var obj = 'hello'; obj.__proto__.charCodeAt = String.prototype.charCodeAt; var s = ''; for ( var i = 0; i < 5; i++ ) s+= String.fromCharCode( obj.charCodeAt(i) ); s", 78 "hello", 79 eval("var obj = 'hello'; obj.__proto__.charCodeAt = String.prototype.charCodeAt; var s = ''; for ( var i = 0; i < 5; i++ ) s+= String.fromCharCode( obj.charCodeAt(i) ); s") ); 80 return (array ); 81 } 82 83 function test() { 84 for ( tc = 0; tc < testcases.length; tc++ ) { 85 testcases[tc].passed = writeTestCaseResult( 86 testcases[tc].expect, 87 testcases[tc].actual, 88 testcases[tc].description +" = "+ 89 testcases[tc].actual ); 90 91 testcases[tc].reason += ( testcases[tc].passed ) 92 ? "" 93 : "wrong value " 94 } 95 stopTest(); 96 return ( testcases ); 97 } 98
