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comparison: js/src/tests/ecma/String/15.5.4.4-3.js
js/src/tests/ecma/String/15.5.4.4-3.js
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 | |
| 7 /** | |
| 8 File Name: 15.5.4.4-3.js | |
| 9 ECMA Section: 15.5.4.4 String.prototype.charAt(pos) | |
| 10 Description: Returns a string containing the character at position | |
| 11 pos in the string. If there is no character at that | |
| 12 string, the result is the empty string. The result is | |
| 13 a string value, not a String object. | |
| 14 | |
| 15 When the charAt method is called with one argument, | |
| 16 pos, the following steps are taken: | |
| 17 1. Call ToString, with this value as its argument | |
| 18 2. Call ToInteger pos | |
| 19 3. Compute the number of characters in Result(1) | |
| 20 4. If Result(2) is less than 0 is or not less than | |
| 21 Result(3), return the empty string | |
| 22 5. Return a string of length 1 containing one character | |
| 23 from result (1), the character at position Result(2). | |
| 24 | |
| 25 Note that the charAt function is intentionally generic; | |
| 26 it does not require that its this value be a String | |
| 27 object. Therefore it can be transferred to other kinds | |
| 28 of objects for use as a method. | |
| 29 | |
| 30 This tests assiging charAt to a user-defined function. | |
| 31 | |
| 32 Author: christine@netscape.com | |
| 33 Date: 2 october 1997 | |
| 34 */ | |
| 35 var SECTION = "15.5.4.4-3"; | |
| 36 var VERSION = "ECMA_1"; | |
| 37 startTest(); | |
| 38 var TITLE = "String.prototype.charAt"; | |
| 39 | |
| 40 writeHeaderToLog( SECTION + " "+ TITLE); | |
| 41 | |
| 42 var foo = new MyObject('hello'); | |
| 43 | |
| 44 | |
| 45 new TestCase( SECTION, "var foo = new MyObject('hello'); ", "h", foo.charAt(0) ); | |
| 46 new TestCase( SECTION, "var foo = new MyObject('hello'); ", "e", foo.charAt(1) ); | |
| 47 new TestCase( SECTION, "var foo = new MyObject('hello'); ", "l", foo.charAt(2) ); | |
| 48 new TestCase( SECTION, "var foo = new MyObject('hello'); ", "l", foo.charAt(3) ); | |
| 49 new TestCase( SECTION, "var foo = new MyObject('hello'); ", "o", foo.charAt(4) ); | |
| 50 new TestCase( SECTION, "var foo = new MyObject('hello'); ", "", foo.charAt(-1) ); | |
| 51 new TestCase( SECTION, "var foo = new MyObject('hello'); ", "", foo.charAt(5) ); | |
| 52 | |
| 53 var boo = new MyObject(true); | |
| 54 | |
| 55 new TestCase( SECTION, "var boo = new MyObject(true); ", "t", boo.charAt(0) ); | |
| 56 new TestCase( SECTION, "var boo = new MyObject(true); ", "r", boo.charAt(1) ); | |
| 57 new TestCase( SECTION, "var boo = new MyObject(true); ", "u", boo.charAt(2) ); | |
| 58 new TestCase( SECTION, "var boo = new MyObject(true); ", "e", boo.charAt(3) ); | |
| 59 | |
| 60 var noo = new MyObject( Math.PI ); | |
| 61 | |
| 62 new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "3", noo.charAt(0) ); | |
| 63 new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", ".", noo.charAt(1) ); | |
| 64 new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "1", noo.charAt(2) ); | |
| 65 new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "4", noo.charAt(3) ); | |
| 66 new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "1", noo.charAt(4) ); | |
| 67 new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "5", noo.charAt(5) ); | |
| 68 new TestCase( SECTION, "var noo = new MyObject(Math.PI); ", "9", noo.charAt(6) ); | |
| 69 | |
| 70 test(); | |
| 71 | |
| 72 function MyObject (v) { | |
| 73 this.value = v; | |
| 74 this.toString = new Function( "return this.value +'';" ); | |
| 75 this.valueOf = new Function( "return this.value" ); | |
| 76 this.charAt = String.prototype.charAt; | |
| 77 } | |
| 78 |
