1 // Copyright 2008 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 // Test that array join calls toString on subarrays. 29 var a = [[1,2],3,4,[5,6]]; 30 assertEquals('1,2345,6', a.join('')); 31 assertEquals('1,2*3*4*5,6', a.join('*')); 32 assertEquals('1,2**3**4**5,6', a.join('**')); 33 assertEquals('1,2****3****4****5,6', a.join('****')); 34 assertEquals('1,2********3********4********5,6', a.join('********')); 35 assertEquals('1,2**********3**********4**********5,6', a.join('**********')); 36 37 // Create a cycle. 38 a.push(a); 39 assertEquals('1,2345,6', a.join('')); 40 assertEquals('1,2*3*4*5,6*', a.join('*')); 41 assertEquals('1,2**3**4**5,6**', a.join('**')); 42 assertEquals('1,2****3****4****5,6****', a.join('****')); 43 assertEquals('1,2********3********4********5,6********', a.join('********')); 44 assertEquals('1,2**********3**********4**********5,6**********', a.join('**********')); 45 46 // Replace array.prototype.toString. 47 var oldToString = Array.prototype.toString; 48 Array.prototype.toString = function() { return "array"; }; 49 assertEquals('array34arrayarray', a.join('')); 50 assertEquals('array*3*4*array*array', a.join('*')); 51 assertEquals('array**3**4**array**array', a.join('**')); 52 assertEquals('array****3****4****array****array', a.join('****')); 53 assertEquals('array********3********4********array********array', a.join('********')); 54 assertEquals('array**********3**********4**********array**********array', a.join('**********')); 55 56 Array.prototype.toString = function() { throw 42; }; 57 assertThrows("a.join('')"); 58 assertThrows("a.join('*')"); 59 assertThrows("a.join('**')"); 60 assertThrows("a.join('****')"); 61 assertThrows("a.join('********')"); 62 assertThrows("a.join('**********')"); 63 64 Array.prototype.toString = function() { return "array"; }; 65 assertEquals('array34arrayarray', a.join('')); 66 assertEquals('array*3*4*array*array', a.join('*')); 67 assertEquals('array**3**4**array**array', a.join('**')); 68 assertEquals('array****3****4****array****array', a.join('****')); 69 assertEquals('array********3********4********array********array', a.join('********')); 70 assertEquals('array**********3**********4**********array**********array', a.join('**********')); 71 72 // Restore original toString. 73 delete Array.prototype.toString; 74 if (Array.prototype.toString != oldToString) { 75 Array.prototype.toString = oldToString; 76 } 77 78 var a = new Array(123123); 79 assertEquals(123122, String(a).length); 80 assertEquals(123122, a.join(",").length); 81 assertEquals(246244, a.join("oo").length); 82 83 a = new Array(Math.pow(2,32) - 1); // Max length. 84 assertEquals("", a.join("")); 85 a[123123123] = "o"; 86 a[1255215215] = "p"; 87 assertEquals("op", a.join("")); 88 89 a = new Array(100001); 90 for (var i = 0; i < a.length; i++) a[i] = undefined; 91 a[5] = "ab"; 92 a[90000] = "cd"; 93 assertEquals("abcd", a.join("")); // Must not throw. 94
