JezK
Edit File: boolean.js
// Copyright 2011 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. assertEquals(Boolean(void 0), false); assertEquals(Boolean(null), false); assertEquals(Boolean(false), false); assertEquals(Boolean(true), true); assertEquals(Boolean(0), false); assertEquals(Boolean(1), true); assertEquals(Boolean(assertEquals), true); assertEquals(Boolean(new Object()), true); assertTrue(new Boolean(false) !== false); assertTrue(new Boolean(false) == false); assertTrue(new Boolean(true) !== true); assertTrue(new Boolean(true) == true); assertEquals(true, !false); assertEquals(false, !true); assertEquals(true, !!true); assertEquals(false, !!false); assertEquals(true, true ? true : false); assertEquals(false, false ? true : false); assertEquals(false, true ? false : true); assertEquals(true, false ? false : true); assertEquals(true, true && true); assertEquals(false, true && false); assertEquals(false, false && true); assertEquals(false, false && false); // Regression. var t = 42; assertEquals(void 0, t.p); assertEquals(void 0, t.p && true); assertEquals(void 0, t.p && false); assertEquals(void 0, t.p && (t.p == 0)); assertEquals(void 0, t.p && (t.p == null)); assertEquals(void 0, t.p && (t.p == t.p)); var o = new Object(); o.p = 'foo'; assertEquals('foo', o.p); assertEquals('foo', o.p || true); assertEquals('foo', o.p || false); assertEquals('foo', o.p || (o.p == 0)); assertEquals('foo', o.p || (o.p == null)); assertEquals('foo', o.p || (o.p == o.p));