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sourceRevisionAtLastExport: 33f2fb0e53d135f0ee17cfccd9d993eb2a6f47de targetRevisionAtLastExport: 31340cbd9add103f586d501b0c3354b7b182abc0
107 lines
4.5 KiB
JavaScript
107 lines
4.5 KiB
JavaScript
// Copyright 2008 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Test that array join calls toString on subarrays.
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var a = [[1,2],3,4,[5,6]];
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assertEquals('1,2345,6', a.join(''));
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assertEquals('1,2*3*4*5,6', a.join('*'));
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assertEquals('1,2**3**4**5,6', a.join('**'));
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assertEquals('1,2****3****4****5,6', a.join('****'));
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assertEquals('1,2********3********4********5,6', a.join('********'));
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assertEquals('1,2**********3**********4**********5,6', a.join('**********'));
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// Create a cycle.
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a.push(a);
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assertEquals('1,2345,6', a.join(''));
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assertEquals('1,2*3*4*5,6*', a.join('*'));
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assertEquals('1,2**3**4**5,6**', a.join('**'));
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assertEquals('1,2****3****4****5,6****', a.join('****'));
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assertEquals('1,2********3********4********5,6********', a.join('********'));
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assertEquals('1,2**********3**********4**********5,6**********', a.join('**********'));
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// Replace array.prototype.toString.
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var oldToString = Array.prototype.toString;
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Array.prototype.toString = function() { return "array"; };
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assertEquals('array34arrayarray', a.join(''));
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assertEquals('array*3*4*array*array', a.join('*'));
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assertEquals('array**3**4**array**array', a.join('**'));
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assertEquals('array****3****4****array****array', a.join('****'));
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assertEquals('array********3********4********array********array', a.join('********'));
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assertEquals('array**********3**********4**********array**********array', a.join('**********'));
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Array.prototype.toString = function() { throw 42; };
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assertThrows("a.join('')");
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assertThrows("a.join('*')");
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assertThrows("a.join('**')");
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assertThrows("a.join('****')");
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assertThrows("a.join('********')");
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assertThrows("a.join('**********')");
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Array.prototype.toString = function() { return "array"; };
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assertEquals('array34arrayarray', a.join(''));
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assertEquals('array*3*4*array*array', a.join('*'));
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assertEquals('array**3**4**array**array', a.join('**'));
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assertEquals('array****3****4****array****array', a.join('****'));
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assertEquals('array********3********4********array********array', a.join('********'));
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assertEquals('array**********3**********4**********array**********array', a.join('**********'));
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// Restore original toString.
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delete Array.prototype.toString;
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if (Array.prototype.toString != oldToString) {
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Array.prototype.toString = oldToString;
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}
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var a = new Array(123123);
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assertEquals(123122, String(a).length);
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assertEquals(123122, a.join(",").length);
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assertEquals(246244, a.join("oo").length);
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a = new Array(Math.pow(2,32) - 1); // Max length.
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assertEquals("", a.join(""));
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a[123123123] = "o";
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a[1255215215] = "p";
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assertEquals("op", a.join(""));
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a = new Array(100001);
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for (var i = 0; i < a.length; i++) a[i] = undefined;
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a[5] = "ab";
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a[90000] = "cd";
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assertEquals("abcd", a.join("")); // Must not throw.
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// Make sure that each element is accessed exactly once, and in the correct
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// order.
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{
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var log = [];
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var p = new Proxy({length: 3, 0: 'a', 1: 'b'}, {
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get: function(t, k, r) { log.push(k); return Reflect.get(t, k, r); }
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});
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assertEquals("a,b,", Array.prototype.join.call(p));
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assertEquals(["length", "0", "1", "2"], log);
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}
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