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Edit File: simple-constructor.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(); } function f1() { this.x = 1; } function f2(x) { this.x = x; } function f3(x) { this.x = x; this.y = 1; this.z = f1; } function f4(x) { this.x = x; this.y = 1; if (x == 1) return; this.z = f1; } o1_1 = new f1(); assertEquals(1, o1_1.x, "1"); o1_2 = new f1(); assertEquals(1, o1_1.x, "2"); assertArrayEquals(["x"], props(o1_1), "3"); assertArrayEquals(["x"], props(o1_2), "4"); o2_1 = new f2(0); o2_2 = new f2(0); assertArrayEquals(["x"], props(o2_1)); assertArrayEquals(["x"], props(o2_2)); o3_1 = new f3(0); o3_2 = new f3(0); assertArrayEquals(["x", "y", "z"], props(o3_1)); assertArrayEquals(["x", "y", "z"], props(o3_2)); o4_0_1 = new f4(0); o4_0_2 = new f4(0); assertArrayEquals(["x", "y", "z"], props(o4_0_1)); assertArrayEquals(["x", "y", "z"], props(o4_0_2)); o4_1_1 = new f4(1); o4_1_2 = new f4(1); assertArrayEquals(["x", "y"], props(o4_1_1)); assertArrayEquals(["x", "y"], props(o4_1_2)); function f5(x, y) { this.x = x; this.y = y; } function f6(x, y) { this.y = y; this.x = x; } function f7(x, y, z) { this.x = x; this.y = y; } function testArgs(fun) { obj = new fun(); assertArrayEquals(["x", "y"], props(obj)); assertEquals(void 0, obj.x); assertEquals(void 0, obj.y); obj = new fun("x"); assertArrayEquals(["x", "y"], props(obj)); assertEquals("x", obj.x); assertEquals(void 0, obj.y); obj = new fun("x", "y"); assertArrayEquals(["x", "y"], props(obj)); assertEquals("x", obj.x); assertEquals("y", obj.y); obj = new fun("x", "y", "z"); assertArrayEquals(["x", "y"], props(obj)); assertEquals("x", obj.x); assertEquals("y", obj.y); } for (var i = 0; i < 10; i++) { testArgs(f5); testArgs(f6); testArgs(f7); } function g(){ this.x=1 } o = new g(); assertEquals(1, o.x); o = new g(); assertEquals(1, o.x); g.prototype = {y:2} o = new g(); assertEquals(1, o.x); assertEquals(2, o.y); o = new g(); assertEquals(1, o.x); assertEquals(2, o.y);