JezK
Edit File: for-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. function props(x) { var array = []; for (var p in x) array.push(p); return array.sort(); } assertEquals(0, props({}).length, "olen0"); assertEquals(1, props({x:1}).length, "olen1"); assertEquals(2, props({x:1, y:2}).length, "olen2"); assertArrayEquals(["x"], props({x:1}), "x"); assertArrayEquals(["x", "y"], props({x:1, y:2}), "xy"); assertArrayEquals(["x", "y", "zoom"], props({x:1, y:2, zoom:3}), "xyzoom"); assertEquals(0, props([]).length, "alen0"); assertEquals(1, props([1]).length, "alen1"); assertEquals(2, props([1,2]).length, "alen2"); assertArrayEquals(["0"], props([1]), "0"); assertArrayEquals(["0", "1"], props([1,2]), "01"); assertArrayEquals(["0", "1", "2"], props([1,2,3]), "012"); var o = {}; var a = []; for (var i = 0x0020; i < 0x01ff; i+=2) { var s = 'char:' + String.fromCharCode(i); a.push(s); o[s] = i; } assertArrayEquals(a, props(o), "charcodes"); var a = []; assertEquals(0, props(a).length, "proplen0"); a[Math.pow(2,30)-1] = 0; assertEquals(1, props(a).length, "proplen1"); a[Math.pow(2,31)-1] = 0; assertEquals(2, props(a).length, "proplen2"); a[1] = 0; assertEquals(3, props(a).length, "proplen3"); for (var hest = 'hest' in {}) { } assertEquals('hest', hest, "empty-no-override"); var result = ''; for (var p in {a : [0], b : 1}) { result += p; } assertEquals('ab', result, "ab"); var result = ''; for (var p in {a : {v:1}, b : 1}) { result += p; } assertEquals('ab', result, "ab-nodeep"); var result = ''; for (var p in { get a() {}, b : 1}) { result += p; } assertEquals('ab', result, "abget"); var result = ''; for (var p in { get a() {}, set a(x) {}, b : 1}) { result += p; } assertEquals('ab', result, "abgetset"); // Test that for-in in the global scope works with a keyed property as "each". // Test outside a loop and in a loop for multiple iterations. a = [1,2,3,4]; x = {foo:5, bar:6, zip:7, glep:9, 10:11}; delete x.bar; y = {} for (a[2] in x) { y[a[2]] = x[a[2]]; } assertEquals(5, y.foo, "y.foo"); assertEquals("undefined", typeof y.bar, "y.bar"); assertEquals(7, y.zip, "y.zip"); assertEquals(9, y.glep, "y.glep"); assertEquals(11, y[10], "y[10]"); assertEquals("undefined", typeof y[2], "y[2]"); assertEquals("undefined", typeof y[0], "y[0]"); for (i=0 ; i < 3; ++i) { y = {} for (a[2] in x) { y[a[2]] = x[a[2]]; } assertEquals(5, y.foo, "y.foo"); assertEquals("undefined", typeof y.bar, "y.bar"); assertEquals(7, y.zip, "y.zip"); assertEquals(9, y.glep, "y.glep"); assertEquals(11, y[10], "y[10]"); assertEquals("undefined", typeof y[2], "y[2]"); assertEquals("undefined", typeof y[0], "y[0]"); }