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comparison: js/src/tests/ecma/Expressions/11.6.1-3.js
js/src/tests/ecma/Expressions/11.6.1-3.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: 11.6.1-3.js | |
| 9 ECMA Section: 11.6.1 The addition operator ( + ) | |
| 10 Description: | |
| 11 | |
| 12 The addition operator either performs string concatenation or numeric | |
| 13 addition. | |
| 14 | |
| 15 The production AdditiveExpression : AdditiveExpression + MultiplicativeExpression | |
| 16 is evaluated as follows: | |
| 17 | |
| 18 1. Evaluate AdditiveExpression. | |
| 19 2. Call GetValue(Result(1)). | |
| 20 3. Evaluate MultiplicativeExpression. | |
| 21 4. Call GetValue(Result(3)). | |
| 22 5. Call ToPrimitive(Result(2)). | |
| 23 6. Call ToPrimitive(Result(4)). | |
| 24 7. If Type(Result(5)) is String or Type(Result(6)) is String, go to step 12. | |
| 25 (Note that this step differs from step 3 in the algorithm for comparison | |
| 26 for the relational operators in using or instead of and.) | |
| 27 8. Call ToNumber(Result(5)). | |
| 28 9. Call ToNumber(Result(6)). | |
| 29 10. Apply the addition operation to Result(8) and Result(9). See the discussion below (11.6.3). | |
| 30 11. Return Result(10). | |
| 31 12. Call ToString(Result(5)). | |
| 32 13. Call ToString(Result(6)). | |
| 33 14. Concatenate Result(12) followed by Result(13). | |
| 34 15. Return Result(14). | |
| 35 | |
| 36 Note that no hint is provided in the calls to ToPrimitive in steps 5 and 6. | |
| 37 All native ECMAScript objects except Date objects handle the absence of a | |
| 38 hint as if the hint Number were given; Date objects handle the absence of a | |
| 39 hint as if the hint String were given. Host objects may handle the absence | |
| 40 of a hint in some other manner. | |
| 41 | |
| 42 This test does only covers cases where the Additive or Mulplicative expression | |
| 43 is a Date. | |
| 44 | |
| 45 Author: christine@netscape.com | |
| 46 Date: 12 november 1997 | |
| 47 */ | |
| 48 var SECTION = "11.6.1-3"; | |
| 49 var VERSION = "ECMA_1"; | |
| 50 startTest(); | |
| 51 | |
| 52 writeHeaderToLog( SECTION + " The Addition operator ( + )"); | |
| 53 | |
| 54 // tests for boolean primitive, boolean object, Object object, a "MyObject" whose value is | |
| 55 // a boolean primitive and a boolean object. | |
| 56 | |
| 57 var DATE1 = new Date(); | |
| 58 | |
| 59 new TestCase( SECTION, | |
| 60 "var DATE1 = new Date(); DATE1 + DATE1", | |
| 61 DATE1.toString() + DATE1.toString(), | |
| 62 DATE1 + DATE1 ); | |
| 63 | |
| 64 new TestCase( SECTION, | |
| 65 "var DATE1 = new Date(); DATE1 + 0", | |
| 66 DATE1.toString() + 0, | |
| 67 DATE1 + 0 ); | |
| 68 | |
| 69 new TestCase( SECTION, | |
| 70 "var DATE1 = new Date(); DATE1 + new Number(0)", | |
| 71 DATE1.toString() + 0, | |
| 72 DATE1 + new Number(0) ); | |
| 73 | |
| 74 new TestCase( SECTION, | |
| 75 "var DATE1 = new Date(); DATE1 + true", | |
| 76 DATE1.toString() + "true", | |
| 77 DATE1 + true ); | |
| 78 | |
| 79 new TestCase( SECTION, | |
| 80 "var DATE1 = new Date(); DATE1 + new Boolean(true)", | |
| 81 DATE1.toString() + "true", | |
| 82 DATE1 + new Boolean(true) ); | |
| 83 | |
| 84 new TestCase( SECTION, | |
| 85 "var DATE1 = new Date(); DATE1 + new Boolean(true)", | |
| 86 DATE1.toString() + "true", | |
| 87 DATE1 + new Boolean(true) ); | |
| 88 | |
| 89 var MYOB1 = new MyObject( DATE1 ); | |
| 90 | |
| 91 new TestCase( SECTION, | |
| 92 "MYOB1 = new MyObject(DATE1); MYOB1 + new Number(1)", | |
| 93 "[object Object]1", | |
| 94 MYOB1 + new Number(1) ); | |
| 95 | |
| 96 new TestCase( SECTION, | |
| 97 "MYOB1 = new MyObject(DATE1); MYOB1 + 1", | |
| 98 "[object Object]1", | |
| 99 MYOB1 + 1 ); | |
| 100 | |
| 101 new TestCase( SECTION, | |
| 102 "MYOB1 = new MyObject(DATE1); MYOB1 + true", | |
| 103 "[object Object]true", | |
| 104 MYOB1 + true ); | |
| 105 | |
| 106 test(); | |
| 107 | |
| 108 function MyPrototypeObject(value) { | |
| 109 this.valueOf = new Function( "return this.value;" ); | |
| 110 this.toString = new Function( "return (this.value + '');" ); | |
| 111 this.value = value; | |
| 112 } | |
| 113 function MyObject( value ) { | |
| 114 this.valueOf = new Function( "return this.value" ); | |
| 115 this.value = value; | |
| 116 } |
