JezK
Edit File: string-fromcharcode.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 String.fromCharCode. // Test various receivers and arguments passed to String.fromCharCode. Object.prototype.fromCharCode = function(x) { return this; }; var fcc = String.fromCharCode; var fcc2 = fcc; function constFun(x) { return function(y) { return x; }; } function test(num) { assertEquals(" ", String.fromCharCode(0x20)); assertEquals(" ", String.fromCharCode(0x20 + 0x10000)); assertEquals(" ", String.fromCharCode(0x20 - 0x10000)); assertEquals(" ", String.fromCharCode(0x20 + 0.5)); assertEquals("\u1234", String.fromCharCode(0x1234)); assertEquals("\u1234", String.fromCharCode(0x1234 + 0x10000)); assertEquals("\u1234", String.fromCharCode(0x1234 - 0x10000)); assertEquals("\u1234", String.fromCharCode(0x1234 + 0.5)); assertEquals(" ", String.fromCharCode(0x20, 0x20)); assertEquals(" ", String.fromCharCode(0x20 + 0.5, 0x20)); assertEquals(" ", fcc(0x20)); assertEquals(" ", fcc(0x20 + 0x10000)); assertEquals(" ", fcc(0x20 - 0x10000)); assertEquals(" ", fcc(0x20 + 0.5)); assertEquals("\u1234", fcc(0x1234)); assertEquals("\u1234", fcc(0x1234 + 0x10000)); assertEquals("\u1234", fcc(0x1234 - 0x10000)); assertEquals("\u1234", fcc(0x1234 + 0.5)); assertEquals(" ", fcc(0x20, 0x20)); assertEquals(" ", fcc(0x20 + 0.5, 0x20)); var receiver = (num < 5) ? String : (num < 9) ? "dummy" : 42; fcc2 = (num < 5) ? fcc : (num < 9) ? constFun(Object("dummy")) : constFun(Object(42)); var expected = (num < 5) ? " " : (num < 9) ? Object("dummy") : Object(42); assertEquals(expected, receiver.fromCharCode(0x20)); assertEquals(expected, receiver.fromCharCode(0x20 - 0x10000)); assertEquals(expected, receiver.fromCharCode(0x20 + 0.5)); assertEquals(expected, fcc2(0x20)); assertEquals(expected, fcc2(0x20 - 0x10000)); assertEquals(expected, fcc2(0x20 + 0.5)); } // Use loop to test the custom IC. for (var i = 0; i < 10; i++) { test(i); } // Test the custom IC works correctly when the map changes. for (var i = 0; i < 10; i++) { var expected = (i < 5) ? " " : 42; if (i == 5) String.fromCharCode = function() { return 42; }; assertEquals(expected, String.fromCharCode(0x20)); }