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comparison: js/src/tests/ecma/extensions/11.6.1-1.js
js/src/tests/ecma/extensions/11.6.1-1.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: 11.6.1-1.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 not cover cases where the Additive or Mulplicative expression | |
| 43 ToPrimitive is string. | |
| 44 | |
| 45 Author: christine@netscape.com | |
| 46 Date: 12 november 1997 | |
| 47 */ | |
| 48 var SECTION = "11.6.1-1"; | |
| 49 var VERSION = "ECMA_1"; | |
| 50 startTest(); | |
| 51 | |
| 52 writeHeaderToLog( SECTION + " The Addition operator ( + )"); | |
| 53 | |
| 54 // tests for "MyValuelessObject", where the value is | |
| 55 // set in the object's prototype, not the object itself. | |
| 56 | |
| 57 new TestCase( SECTION, | |
| 58 "var EXP_1 = new MyValuelessObject(true); var EXP_2 = new MyValuelessObject(false); EXP_1 + EXP_2", | |
| 59 1, | |
| 60 eval("var EXP_1 = new MyValuelessObject(true); var EXP_2 = new MyValuelessObject(false); EXP_1 + EXP_2") ); | |
| 61 | |
| 62 new TestCase( SECTION, | |
| 63 "var EXP_1 = new MyValuelessObject(new Boolean(true)); var EXP_2 = new MyValuelessObject(new Boolean(false)); EXP_1 + EXP_2", | |
| 64 "truefalse", | |
| 65 eval("var EXP_1 = new MyValuelessObject(new Boolean(true)); var EXP_2 = new MyValuelessObject(new Boolean(false)); EXP_1 + EXP_2") ); | |
| 66 | |
| 67 // tests for "MyValuelessObject", where the value is | |
| 68 // set in the object's prototype, not the object itself. | |
| 69 | |
| 70 | |
| 71 new TestCase( SECTION, | |
| 72 "var EXP_1 = new MyValuelessObject(100); var EXP_2 = new MyValuelessObject(-1); EXP_1 + EXP_2", | |
| 73 99, | |
| 74 eval("var EXP_1 = new MyValuelessObject(100); var EXP_2 = new MyValuelessObject(-1); EXP_1 + EXP_2") ); | |
| 75 | |
| 76 new TestCase( SECTION, | |
| 77 "var EXP_1 = new MyValuelessObject(new Number(100)); var EXP_2 = new MyValuelessObject(new Number(-1)); EXP_1 + EXP_2", | |
| 78 "100-1", | |
| 79 eval("var EXP_1 = new MyValuelessObject(new Number(100)); var EXP_2 = new MyValuelessObject(new Number(-1)); EXP_1 + EXP_2") ); | |
| 80 | |
| 81 new TestCase( SECTION, | |
| 82 "var EXP_1 = new MyValuelessObject( new MyValuelessObject( new Boolean(true) ) ); EXP_1 + EXP_1", | |
| 83 "truetrue", | |
| 84 eval("var EXP_1 = new MyValuelessObject( new MyValuelessObject( new Boolean(true) ) ); EXP_1 + EXP_1") ); | |
| 85 | |
| 86 test(); | |
| 87 | |
| 88 function MyProtoValuelessObject() { | |
| 89 this.valueOf = new Function ( "" ); | |
| 90 this.__proto__ = null; | |
| 91 } | |
| 92 | |
| 93 function MyProtolessObject( value ) { | |
| 94 this.valueOf = new Function( "return this.value" ); | |
| 95 this.__proto__ = null; | |
| 96 this.value = value; | |
| 97 } | |
| 98 | |
| 99 function MyValuelessObject(value) { | |
| 100 this.__proto__ = new MyPrototypeObject(value); | |
| 101 } | |
| 102 function MyPrototypeObject(value) { | |
| 103 this.valueOf = new Function( "return this.value;" ); | |
| 104 this.toString = new Function( "return (this.value + '');" ); | |
| 105 this.value = value; | |
| 106 } | |
| 107 | |
| 108 function MyObject( value ) { | |
| 109 this.valueOf = new Function( "return this.value" ); | |
| 110 this.value = value; | |
| 111 } |
