Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2013 the V8 project authors. All rights reserved. |
| 2 | // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. |
| 3 | // |
| 4 | // Redistribution and use in source and binary forms, with or without |
| 5 | // modification, are permitted provided that the following conditions |
| 6 | // are met: |
| 7 | // 1. Redistributions of source code must retain the above copyright |
| 8 | // notice, this list of conditions and the following disclaimer. |
| 9 | // 2. Redistributions in binary form must reproduce the above copyright |
| 10 | // notice, this list of conditions and the following disclaimer in the |
| 11 | // documentation and/or other materials provided with the distribution. |
| 12 | // |
| 13 | // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY |
| 14 | // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 15 | // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 16 | // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| 17 | // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 18 | // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 19 | // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| 20 | // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 21 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 22 | // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 23 | |
| 24 | description( |
| 25 | "This test checks that toString() round-trip on a function that has a array with elision does not remove a comma." |
| 26 | ); |
| 27 | |
| 28 | function f1() { |
| 29 | return [,]; |
| 30 | } |
| 31 | |
| 32 | function f2() { |
| 33 | return [1]; |
| 34 | } |
| 35 | |
| 36 | function f3() { |
| 37 | return [1,]; |
| 38 | } |
| 39 | |
| 40 | // this is the first testcase that proves that trailing |
| 41 | // elision comma is not removed |
| 42 | function f4() { |
| 43 | return [1,,]; |
| 44 | } |
| 45 | |
| 46 | function f5() { |
| 47 | return [1,,,]; |
| 48 | } |
| 49 | function f6() { |
| 50 | return [1,,,4]; |
| 51 | } |
| 52 | |
| 53 | function f7() { |
| 54 | return [,2,]; |
| 55 | } |
| 56 | |
| 57 | function f8() { |
| 58 | return [,2,,]; |
| 59 | } |
| 60 | |
| 61 | function f9() { |
| 62 | return [,2,,,5]; |
| 63 | } |
| 64 | |
| 65 | function f10() { |
| 66 | return [,,3,,,]; |
| 67 | } |
| 68 | |
| 69 | function f11() { |
| 70 | return [,,3,,,6]; |
| 71 | } |
| 72 | |
| 73 | function f12() { |
| 74 | return [,undefined]; |
| 75 | } |
| 76 | |
| 77 | function f13() { |
| 78 | return [,undefined,]; |
| 79 | } |
| 80 | |
| 81 | function f14() { |
| 82 | return [,undefined,,]; |
| 83 | } |
| 84 | |
| 85 | function f15() { |
| 86 | return [,,]; |
| 87 | } |
| 88 | |
| 89 | function f16() { |
| 90 | return [,,,]; |
| 91 | } |
| 92 | |
| 93 | shouldBe("typeof undefined", "'undefined'"); |
| 94 | |
| 95 | unevalf = function(x) { return '(' + x.toString() + ')'; }; |
| 96 | |
| 97 | function testToStringAndLength(fn, length, lastElement) |
| 98 | { |
| 99 | // check that array length is correct |
| 100 | shouldBe(""+ fn +"().length", "" + length); |
| 101 | |
| 102 | // check that last element is what it is supposed to be |
| 103 | shouldBe(""+ fn +"()[" + length +"-1]", "" + lastElement); |
| 104 | |
| 105 | // check that toString result evaluates to code that can be evaluated |
| 106 | // and that toString doesn't remove the trailing elision comma. |
| 107 | shouldBe("unevalf(eval(unevalf("+fn+")))", "unevalf(" + fn + ")"); |
| 108 | |
| 109 | // check that toString()ed functions should retain semantics |
| 110 | |
| 111 | shouldBe("eval(unevalf("+fn+"))().length", ""+length); |
| 112 | shouldBe("eval(unevalf("+fn+"))()[" + length +"-1]", ""+lastElement); |
| 113 | } |
| 114 | |
| 115 | |
| 116 | testToStringAndLength("f1", 1); |
| 117 | testToStringAndLength("f2", 1, 1); |
| 118 | testToStringAndLength("f3", 1,1); |
| 119 | testToStringAndLength("f4", 2); |
| 120 | testToStringAndLength("f5", 3); |
| 121 | testToStringAndLength("f6", 4, 4); |
| 122 | testToStringAndLength("f7", 2, 2); |
| 123 | testToStringAndLength("f8", 3); |
| 124 | testToStringAndLength("f9", 5, 5); |
| 125 | testToStringAndLength("f10", 5); |
| 126 | testToStringAndLength("f11", 6, 6); |
| 127 | testToStringAndLength("f12", 2); |
| 128 | testToStringAndLength("f13", 2); |
| 129 | testToStringAndLength("f14", 3); |
| 130 | testToStringAndLength("f15", 2); |
| 131 | testToStringAndLength("f16", 3); |