JezK
Edit File: in.js
// Copyright 2008 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // ---------------- // Check fast objects var o = { }; assertFalse(0 in o); assertFalse('x' in o); assertFalse('y' in o); assertTrue('toString' in o, "toString"); var o = { x: 12 }; assertFalse(0 in o); assertTrue('x' in o); assertFalse('y' in o); assertTrue('toString' in o, "toString"); var o = { x: 12, y: 15 }; assertFalse(0 in o); assertTrue('x' in o); assertTrue('y' in o); assertTrue('toString' in o, "toString"); // ---------------- // Check dense arrays var a = [ ]; assertFalse(0 in a); assertFalse(1 in a); assertFalse('0' in a); assertFalse('1' in a); assertTrue('toString' in a, "toString"); var a = [ 1 ]; assertTrue(0 in a); assertFalse(1 in a); assertTrue('0' in a); assertFalse('1' in a); assertTrue('toString' in a, "toString"); var a = [ 1, 2 ]; assertTrue(0 in a); assertTrue(1 in a); assertTrue('0' in a); assertTrue('1' in a); assertTrue('toString' in a, "toString"); var a = [ 1, 2 ]; assertFalse(0.001 in a); assertTrue(-0 in a); assertTrue(+0 in a); assertFalse('0.0' in a); assertFalse('1.0' in a); assertFalse(NaN in a); assertFalse(Infinity in a); assertFalse(-Infinity in a); var a = []; a[1] = 2; assertFalse(0 in a); assertTrue(1 in a); assertFalse(2 in a); assertFalse('0' in a); assertTrue('1' in a); assertFalse('2' in a); assertTrue('toString' in a, "toString"); // ---------------- // Check dictionary ("normalized") objects var o = {}; for (var i = 0x0020; i < 0x02ff; i += 2) { o['char:' + String.fromCharCode(i)] = i; } for (var i = 0x0020; i < 0x02ff; i += 2) { assertTrue('char:' + String.fromCharCode(i) in o); assertFalse('char:' + String.fromCharCode(i + 1) in o); } assertTrue('toString' in o, "toString"); var o = {}; o[Math.pow(2,30)-1] = 0; o[Math.pow(2,31)-1] = 0; o[1] = 0; assertFalse(0 in o); assertTrue(1 in o); assertFalse(2 in o); assertFalse(Math.pow(2,30)-2 in o); assertTrue(Math.pow(2,30)-1 in o); assertFalse(Math.pow(2,30)-0 in o); assertTrue(Math.pow(2,31)-1 in o); assertFalse(0.001 in o); assertFalse('0.0' in o); assertFalse('1.0' in o); assertFalse(NaN in o); assertFalse(Infinity in o); assertFalse(-Infinity in o); assertFalse(-0 in o); assertFalse(+0 in o); assertTrue('toString' in o, "toString"); // ---------------- // Check sparse arrays var a = []; a[Math.pow(2,30)-1] = 0; a[Math.pow(2,31)-1] = 0; a[1] = 0; assertFalse(0 in a, "0 in a"); assertTrue(1 in a, "1 in a"); assertFalse(2 in a, "2 in a"); assertFalse(Math.pow(2,30)-2 in a, "Math.pow(2,30)-2 in a"); assertTrue(Math.pow(2,30)-1 in a, "Math.pow(2,30)-1 in a"); assertFalse(Math.pow(2,30)-0 in a, "Math.pow(2,30)-0 in a"); assertTrue(Math.pow(2,31)-1 in a, "Math.pow(2,31)-1 in a"); assertFalse(0.001 in a, "0.001 in a"); assertFalse('0.0' in a,"'0.0' in a"); assertFalse('1.0' in a,"'1.0' in a"); assertFalse(NaN in a,"NaN in a"); assertFalse(Infinity in a,"Infinity in a"); assertFalse(-Infinity in a,"-Infinity in a"); assertFalse(-0 in a,"-0 in a"); assertFalse(+0 in a,"+0 in a"); assertTrue('toString' in a, "toString"); // ------------- // Check negative indices in arrays. var a = []; assertFalse(-1 in a); a[-1] = 43; assertTrue(-1 in a);