JezK
Edit File: regress-406.js
// Copyright 2009 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. // Test of constant folding of boolean-valued expressions. // See http://code.google.com/p/v8/issues/detail?id=406 assertFalse(typeof(0) == "zero"); assertTrue(typeof(0) != "zero"); // The and and or truth tables with both operands constant. assertFalse(typeof(0) == "zero" && typeof(0) == "zero"); assertFalse(typeof(0) == "zero" && typeof(0) != "zero"); assertFalse(typeof(0) != "zero" && typeof(0) == "zero"); assertTrue(typeof(0) != "zero" && typeof(0) != "zero"); assertFalse(typeof(0) == "zero" || typeof(0) == "zero"); assertTrue(typeof(0) == "zero" || typeof(0) != "zero"); assertTrue(typeof(0) != "zero" || typeof(0) == "zero"); assertTrue(typeof(0) != "zero" || typeof(0) != "zero"); // Same with just the left operand constant. // Helper function to prevent simple constant folding. function one() { return 1; } assertFalse(typeof(0) == "zero" && one() < 0); assertFalse(typeof(0) == "zero" && one() > 0); assertFalse(typeof(0) != "zero" && one() < 0); assertTrue(typeof(0) != "zero" && one() > 0); assertFalse(typeof(0) == "zero" || one() < 0); assertTrue(typeof(0) == "zero" || one() > 0); assertTrue(typeof(0) != "zero" || one() < 0); assertTrue(typeof(0) != "zero" || one() > 0); // Same with just the right operand constant. assertFalse(one() < 0 && typeof(0) == "zero"); assertFalse(one() < 0 && typeof(0) != "zero"); assertFalse(one() > 0 && typeof(0) == "zero"); assertTrue(one() > 0 && typeof(0) != "zero"); assertFalse(one() < 0 || typeof(0) == "zero"); assertTrue(one() < 0 || typeof(0) != "zero"); assertTrue(one() > 0 || typeof(0) == "zero"); assertTrue(one() > 0 || typeof(0) != "zero");