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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
11 // with the distribution. | 11 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
15 // | 15 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 | 28 |
29 // Flags: --expose-natives-as natives | 29 // Flags: --expose-natives-as natives --allow-natives-syntax |
30 // Test the SameValue and SameValueZero internal methods. | 30 // Test the SameValue and SameValueZero internal methods. |
31 | 31 |
32 var obj1 = {x: 10, y: 11, z: "test"}; | 32 var obj1 = {x: 10, y: 11, z: "test"}; |
33 var obj2 = {x: 10, y: 11, z: "test"}; | 33 var obj2 = {x: 10, y: 11, z: "test"}; |
34 | 34 |
35 var sameValue = Object.is; | 35 var sameValue = Object.is; |
36 var sameValueZero = natives.ImportNow("SameValueZero"); | 36 var sameValueZero = function(x, y) { return %SameValueZero(x, y); } |
37 | 37 |
38 // Calls SameValue and SameValueZero and checks that their results match. | 38 // Calls SameValue and SameValueZero and checks that their results match. |
39 function sameValueBoth(a, b) { | 39 function sameValueBoth(a, b) { |
40 var result = sameValue(a, b); | 40 var result = sameValue(a, b); |
41 assertTrue(result === sameValueZero(a, b)); | 41 assertTrue(result === sameValueZero(a, b)); |
42 return result; | 42 return result; |
43 } | 43 } |
44 | 44 |
45 // Calls SameValue and SameValueZero and checks that their results don't match. | 45 // Calls SameValue and SameValueZero and checks that their results don't match. |
46 function sameValueZeroOnly(a, b) { | 46 function sameValueZeroOnly(a, b) { |
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111 assertFalse(sameValueBoth("1", 1)); | 111 assertFalse(sameValueBoth("1", 1)); |
112 assertFalse(sameValueBoth("true", true)); | 112 assertFalse(sameValueBoth("true", true)); |
113 assertFalse(sameValueBoth("false", false)); | 113 assertFalse(sameValueBoth("false", false)); |
114 assertFalse(sameValueBoth("undefined", undefined)); | 114 assertFalse(sameValueBoth("undefined", undefined)); |
115 assertFalse(sameValueBoth("NaN", NaN)); | 115 assertFalse(sameValueBoth("NaN", NaN)); |
116 | 116 |
117 // SameValue considers -0 and +0 to be different; SameValueZero considers | 117 // SameValue considers -0 and +0 to be different; SameValueZero considers |
118 // -0 and +0 to be the same. | 118 // -0 and +0 to be the same. |
119 assertTrue(sameValueZeroOnly(+0, -0)); | 119 assertTrue(sameValueZeroOnly(+0, -0)); |
120 assertTrue(sameValueZeroOnly(-0, +0)); | 120 assertTrue(sameValueZeroOnly(-0, +0)); |
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