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Edit File: accessors-on-global-object.js
// Copyright 2010 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 that installing a getter on the global object instead of a // normal property works. x = 0; function getX() { return x; } for (var i = 0; i < 10; i++) { assertEquals(i < 5 ? 0 : 42, getX()); if (i == 4) __defineGetter__("x", function() { return 42; }); } // Test that installing a setter on the global object instead of a // normal property works. y = 0; var setter_y; function setY(value) { y = value; } for (var i = 0; i < 10; i++) { setY(i); assertEquals(i < 5 ? i : 2 * i, y); if (i == 4) { __defineSetter__("y", function(value) { setter_y = 2 * value; }); __defineGetter__("y", function() { return setter_y; }); } } // Test that replacing a getter with a normal property works as // expected. __defineGetter__("z", function() { return 42; }); function getZ() { return z; } for (var i = 0; i < 10; i++) { assertEquals(i < 5 ? 42 : 0, getZ()); if (i == 4) { delete z; z = 0; } }