1 // Copyright 2009 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 that we match ECMAScript in making most builtin functions 29 // deletable and only specific ones undeletable or read-only. 30 31 var array; 32 33 array = [ 34 "toString", "toLocaleString", "join", "pop", "push", "concat", "reverse", 35 "shift", "unshift", "slice", "splice", "sort", "filter", "forEach", "some", 36 "every", "map", "indexOf", "lastIndexOf", "reduce", "reduceRight"]; 37 CheckEcmaSemantics(Array.prototype, array, "Array prototype"); 38 39 var old_Array_prototype = Array.prototype; 40 var new_Array_prototype = {}; 41 for (var i = 0; i < 7; i++) { 42 Array.prototype = new_Array_prototype; 43 assertEquals(old_Array_prototype, Array.prototype); 44 } 45 46 array = [ 47 "toString", "toDateString", "toTimeString", "toLocaleString", 48 "toLocaleDateString", "toLocaleTimeString", "valueOf", "getTime", 49 "getFullYear", "getUTCFullYear", "getMonth", "getUTCMonth", "getDate", 50 "getUTCDate", "getDay", "getUTCDay", "getHours", "getUTCHours", "getMinutes", 51 "getUTCMinutes", "getSeconds", "getUTCSeconds", "getMilliseconds", 52 "getUTCMilliseconds", "getTimezoneOffset", "setTime", "setMilliseconds", 53 "setUTCMilliseconds", "setSeconds", "setUTCSeconds", "setMinutes", 54 "setUTCMinutes", "setHours", "setUTCHours", "setDate", "setUTCDate", 55 "setMonth", "setUTCMonth", "setFullYear", "setUTCFullYear", "toGMTString", 56 "toUTCString", "getYear", "setYear", "toISOString", "toJSON"]; 57 CheckEcmaSemantics(Date.prototype, array, "Date prototype"); 58 59 array = [ 60 "random", "abs", "acos", "asin", "atan", "ceil", "cos", "exp", "floor", "log", 61 "round", "sin", "sqrt", "tan", "atan2", "pow", "max", "min"]; 62 CheckEcmaSemantics(Math, array, "Math1"); 63 64 CheckEcmaSemantics(Date, ["UTC", "parse", "now"], "Date"); 65 66 array = [ 67 "E", "LN10", "LN2", "LOG2E", "LOG10E", "PI", "SQRT1_2", "SQRT2"]; 68 CheckDontDelete(Math, array, "Math2"); 69 70 array = [ 71 "escape", "unescape", "decodeURI", "decodeURIComponent", "encodeURI", 72 "encodeURIComponent", "isNaN", "isFinite", "parseInt", "parseFloat", "eval", 73 "execScript"]; 74 CheckEcmaSemantics(this, array, "Global"); 75 CheckReadOnlyAttr(this, "Infinity"); 76 CheckReadOnlyAttr(this, "NaN"); 77 CheckReadOnlyAttr(this, "undefined"); 78 79 array = ["exec", "test", "toString", "compile"]; 80 CheckEcmaSemantics(RegExp.prototype, array, "RegExp prototype"); 81 82 array = [ 83 "toString", "toLocaleString", "valueOf", "hasOwnProperty", 84 "isPrototypeOf", "propertyIsEnumerable", "__defineGetter__", 85 "__lookupGetter__", "__defineSetter__", "__lookupSetter__"]; 86 CheckEcmaSemantics(Object.prototype, array, "Object prototype"); 87 88 var old_Object_prototype = Object.prototype; 89 var new_Object_prototype = {}; 90 for (var i = 0; i < 7; i++) { 91 Object.prototype = new_Object_prototype; 92 assertEquals(old_Object_prototype, Object.prototype); 93 } 94 95 array = [ 96 "toString", "valueOf", "toJSON"]; 97 CheckEcmaSemantics(Boolean.prototype, array, "Boolean prototype"); 98 99 array = [ 100 "toString", "toLocaleString", "valueOf", "toFixed", "toExponential", 101 "toPrecision", "toJSON"]; 102 CheckEcmaSemantics(Number.prototype, array, "Number prototype"); 103 104 CheckEcmaSemantics(Function.prototype, ["toString"], "Function prototype"); 105 CheckEcmaSemantics(Date.prototype, ["constructor"], "Date prototype constructor"); 106 107 array = [ 108 "charAt", "charCodeAt", "concat", "indexOf", 109 "lastIndexOf", "localeCompare", "match", "replace", "search", "slice", 110 "split", "substring", "substr", "toLowerCase", "toLocaleLowerCase", 111 "toUpperCase", "toLocaleUpperCase", "link", "anchor", "fontcolor", "fontsize", 112 "big", "blink", "bold", "fixed", "italics", "small", "strike", "sub", "sup", 113 "toJSON", "toString", "valueOf"]; 114 CheckEcmaSemantics(String.prototype, array, "String prototype"); 115 CheckEcmaSemantics(String, ["fromCharCode"], "String"); 116 117 118 function CheckEcmaSemantics(type, props, name) { 119 print(name); 120 for (var i = 0; i < props.length; i++) { 121 CheckDeletable(type, props[i]); 122 } 123 } 124 125 126 function CheckDontDelete(type, props, name) { 127 print(name); 128 for (var i = 0; i < props.length; i++) { 129 CheckDontDeleteAttr(type, props[i]); 130 } 131 } 132 133 134 function CheckDeletable(type, prop) { 135 var old = type[prop]; 136 var hasOwnProperty = Object.prototype.hasOwnProperty; 137 if (!type[prop]) return; 138 assertTrue(type.hasOwnProperty(prop), "inherited: " + prop); 139 var deleted = delete type[prop]; 140 assertTrue(deleted, "delete operator returned false: " + prop); 141 assertFalse(hasOwnProperty.call(type, prop), "still there after delete: " + prop); 142 type[prop] = "foo"; 143 assertEquals("foo", type[prop], "not overwritable: " + prop); 144 type[prop] = old; 145 } 146 147 148 function CheckDontDeleteAttr(type, prop) { 149 var old = type[prop]; 150 if (!type[prop]) return; 151 assertTrue(type.hasOwnProperty(prop), "inherited: " + prop); 152 var deleted = delete type[prop]; 153 assertFalse(deleted, "delete operator returned true: " + prop); 154 assertTrue(type.hasOwnProperty(prop), "not there after delete: " + prop); 155 type[prop] = "foo"; 156 assertFalse("foo" == type[prop], "overwritable: " + prop); 157 } 158 159 160 function CheckReadOnlyAttr(type, prop) { 161 var old = type[prop]; 162 if (!type[prop]) return; 163 assertTrue(type.hasOwnProperty(prop), "inherited: " + prop); 164 var deleted = delete type[prop]; 165 assertFalse(deleted, "delete operator returned true: " + prop); 166 assertTrue(type.hasOwnProperty(prop), "not there after delete: " + prop); 167 type[prop] = "foo"; 168 assertEquals(old, type[prop], "overwritable: " + prop); 169 } 170 171 print("OK"); 172
