1 // Copyright 2010 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 // Test String.fromCharCode. 29 30 31 // Test various receivers and arguments passed to String.fromCharCode. 32 33 Object.prototype.fromCharCode = function(x) { return this; }; 34 35 var fcc = String.fromCharCode; 36 var fcc2 = fcc; 37 38 function constFun(x) { return function(y) { return x; }; } 39 40 function test(num) { 41 assertEquals(" ", String.fromCharCode(0x20)); 42 assertEquals(" ", String.fromCharCode(0x20 + 0x10000)); 43 assertEquals(" ", String.fromCharCode(0x20 - 0x10000)); 44 assertEquals(" ", String.fromCharCode(0x20 + 0.5)); 45 46 assertEquals("\u1234", String.fromCharCode(0x1234)); 47 assertEquals("\u1234", String.fromCharCode(0x1234 + 0x10000)); 48 assertEquals("\u1234", String.fromCharCode(0x1234 - 0x10000)); 49 assertEquals("\u1234", String.fromCharCode(0x1234 + 0.5)); 50 51 assertEquals(" ", String.fromCharCode(0x20, 0x20)); 52 assertEquals(" ", String.fromCharCode(0x20 + 0.5, 0x20)); 53 54 assertEquals(" ", fcc(0x20)); 55 assertEquals(" ", fcc(0x20 + 0x10000)); 56 assertEquals(" ", fcc(0x20 - 0x10000)); 57 assertEquals(" ", fcc(0x20 + 0.5)); 58 59 assertEquals("\u1234", fcc(0x1234)); 60 assertEquals("\u1234", fcc(0x1234 + 0x10000)); 61 assertEquals("\u1234", fcc(0x1234 - 0x10000)); 62 assertEquals("\u1234", fcc(0x1234 + 0.5)); 63 64 assertEquals(" ", fcc(0x20, 0x20)); 65 assertEquals(" ", fcc(0x20 + 0.5, 0x20)); 66 67 var receiver = (num < 5) ? String : (num < 9) ? "dummy" : 42; 68 fcc2 = (num < 5) ? fcc 69 : (num < 9) ? constFun(Object("dummy")) 70 : constFun(Object(42)); 71 var expected = (num < 5) ? " " : (num < 9) ? Object("dummy") : Object(42); 72 assertEquals(expected, receiver.fromCharCode(0x20)); 73 assertEquals(expected, receiver.fromCharCode(0x20 - 0x10000)); 74 assertEquals(expected, receiver.fromCharCode(0x20 + 0.5)); 75 assertEquals(expected, fcc2(0x20)); 76 assertEquals(expected, fcc2(0x20 - 0x10000)); 77 assertEquals(expected, fcc2(0x20 + 0.5)); 78 } 79 80 // Use loop to test the custom IC. 81 for (var i = 0; i < 10; i++) { 82 test(i); 83 } 84 85 86 // Test the custom IC works correctly when the map changes. 87 for (var i = 0; i < 10; i++) { 88 var expected = (i < 5) ? " " : 42; 89 if (i == 5) String.fromCharCode = function() { return 42; }; 90 assertEquals(expected, String.fromCharCode(0x20)); 91 } 92
