1 // Copyright 2010 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 // Check pops with various number of arguments. 29 (function() { 30 var a = []; 31 for (var i = 0; i < 7; i++) { 32 a = [7, 6, 5, 4, 3, 2, 1]; 33 34 assertEquals(1, a.pop(), "1st pop"); 35 assertEquals(6, a.length, "length 1st pop"); 36 37 assertEquals(2, a.pop(1), "2nd pop"); 38 assertEquals(5, a.length, "length 2nd pop"); 39 40 assertEquals(3, a.pop(1, 2), "3rd pop"); 41 assertEquals(4, a.length, "length 3rd pop"); 42 43 assertEquals(4, a.pop(1, 2, 3), "4th pop"); 44 assertEquals(3, a.length, "length 4th pop"); 45 46 assertEquals(5, a.pop(), "5th pop"); 47 assertEquals(2, a.length, "length 5th pop"); 48 49 assertEquals(6, a.pop(), "6th pop"); 50 assertEquals(1, a.length, "length 6th pop"); 51 52 assertEquals(7, a.pop(), "7th pop"); 53 assertEquals(0, a.length, "length 7th pop"); 54 55 assertEquals(undefined, a.pop(), "8th pop"); 56 assertEquals(0, a.length, "length 8th pop"); 57 58 assertEquals(undefined, a.pop(1, 2, 3), "9th pop"); 59 assertEquals(0, a.length, "length 9th pop"); 60 } 61 62 // Check that pop works on inherited properties. 63 for (var i = 0; i < 10 ;i++) { // Ensure ICs are stabilized. 64 Array.prototype[1] = 1; 65 Array.prototype[3] = 3; 66 Array.prototype[5] = 5; 67 Array.prototype[7] = 7; 68 Array.prototype[9] = 9; 69 a = [0,1,2,,4,,6,7,8,,]; 70 assertEquals(10, a.length, "inherit-initial-length"); 71 for (var j = 9; j >= 0; j--) { 72 assertEquals(j + 1, a.length, "inherit-pre-length-" + j); 73 assertTrue(j in a, "has property " + j); 74 var own = a.hasOwnProperty(j); 75 var inherited = Array.prototype.hasOwnProperty(j); 76 assertEquals(j, a.pop(), "inherit-pop"); 77 assertEquals(j, a.length, "inherit-post-length"); 78 assertFalse(a.hasOwnProperty(j), "inherit-deleted-own-" + j); 79 assertEquals(inherited, Array.prototype.hasOwnProperty(j), 80 "inherit-not-deleted-inherited" + j); 81 } 82 Array.prototype.length = 0; // Clean-up. 83 } 84 85 // Check that pop works on inherited properties for 86 // arrays with array prototype. 87 for (var i = 0; i < 10 ;i++) { // Ensure ICs are stabilized. 88 var array_proto = []; 89 array_proto[1] = 1; 90 array_proto[3] = 3; 91 array_proto[5] = 5; 92 array_proto[7] = 7; 93 array_proto[9] = 9; 94 a = [0,1,2,,4,,6,7,8,,]; 95 a.__proto__ = array_proto; 96 assertEquals(10, a.length, "array_proto-inherit-initial-length"); 97 for (var j = 9; j >= 0; j--) { 98 assertEquals(j + 1, a.length, "array_proto-inherit-pre-length-" + j); 99 assertTrue(j in a, "array_proto-has property " + j); 100 var own = a.hasOwnProperty(j); 101 var inherited = array_proto.hasOwnProperty(j); 102 assertEquals(j, a.pop(), "array_proto-inherit-pop"); 103 assertEquals(j, a.length, "array_proto-inherit-post-length"); 104 assertFalse(a.hasOwnProperty(j), "array_proto-inherit-deleted-own-" + j); 105 assertEquals(inherited, array_proto.hasOwnProperty(j), 106 "array_proto-inherit-not-deleted-inherited" + j); 107 } 108 } 109 110 // Check that pop works on inherited properties for 111 // arrays with array prototype. 112 })(); 113 114 // Test the case of not JSArray receiver. 115 // Regression test for custom call generators, see issue 684. 116 (function() { 117 var a = []; 118 for (var i = 0; i < 100; i++) a.push(i); 119 var x = {__proto__: a}; 120 for (var i = 0; i < 100; i++) { 121 assertEquals(99 - i, x.pop(), i + 'th iteration'); 122 } 123 })(); 124
