1 // Copyright 2011 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 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. 27 28 // Regression test for Chromium issue 70066. Delete should work properly 29 // from inside 'with' scopes. 30 // http://code.google.com/p/chromium/issues/detail?id=70066 31 32 x = 0; 33 34 // Delete on a slot from a function's own context. 35 function test1() { 36 var value = 1; 37 var status; 38 with ({}) { status = delete value; } 39 return value + ":" + status; 40 } 41 42 assertEquals("1:false", test1(), "test1"); 43 assertEquals(0, x, "test1"); // Global x is undisturbed. 44 45 46 // Delete on a slot from an outer context. 47 function test2() { 48 function f() { 49 with ({}) { return delete value; } 50 } 51 var value = 2; 52 var status = f(); 53 return value + ":" + status; 54 } 55 56 assertEquals("2:false", test2(), "test2"); 57 assertEquals(0, x, "test2"); // Global x is undisturbed. 58 59 60 // Delete on a parameter. 61 function test3(value) { 62 var status; 63 with ({}) { status = delete value; } 64 return value + ":" + status; 65 } 66 67 assertEquals("3:false", test3(3), "test3"); 68 assertEquals(0, x, "test3"); // Global x is undisturbed. 69 70 71 // Delete on a parameter found in an outer context. 72 function test4(value) { 73 function f() { 74 with ({}) { return delete value; } 75 } 76 var status = f(); 77 return value + ":" + status; 78 } 79 80 assertEquals("4:false", test4(4), "test4"); 81 assertEquals(0, x, "test4"); // Global x is undisturbed. 82 83 84 // Delete on a parameter, arguments object should be unaffected. 85 function test5(value) { 86 var status; 87 with ({}) { status = delete value; } 88 return arguments[0] + ":" + status; 89 } 90 91 assertEquals("5:false", test5(5), "test5"); 92 assertEquals(0, x, "test5"); // Global x is undisturbed. 93 94 function test6(value) { 95 function f() { 96 with ({}) { return delete value; } 97 } 98 var status = f(); 99 return arguments[0] + ":" + status; 100 } 101 102 assertEquals("6:false", test6(6), "test6"); 103 assertEquals(0, x, "test6"); // Global x is undisturbed. 104 105 106 // Delete on a property found on 'with' object. 107 function test7(object) { 108 with (object) { return delete value; } 109 } 110 111 var o = {value: 7}; 112 assertEquals(true, test7(o), "test7"); 113 assertEquals(void 0, o.value, "test7"); 114 assertEquals(0, x, "test7"); // Global x is undisturbed. 115 116 117 // Delete on a global property. 118 function test8() { 119 with ({}) { return delete x; } 120 } 121 122 assertEquals(true, test8(), "test8"); 123 assertThrows("x", "test8"); // Global x should be deleted. 124 125 126 // Delete on a property that is not found anywhere. 127 function test9() { 128 with ({}) { return delete x; } 129 } 130 131 assertThrows("x", "test9"); // Make sure it's not there. 132 assertEquals(true, test9(), "test9"); 133 134 135 // Delete on a DONT_DELETE property of the global object. 136 var y = 10; 137 function test10() { 138 with ({}) { return delete y; } 139 } 140 141 assertEquals(false, test10(), "test10"); 142 assertEquals(10, y, "test10"); 143
