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 JSC in making some functions undeletable. 29 // See http://code.google.com/p/chromium/issues/detail?id=1717 30 // The functions on these prototypes are not just undeletable. It is 31 // possible to override them with new definitions, then get the old 32 // version back by deleting the new definition. 33 34 var array; 35 36 array = [ 37 "toString", "toLocaleString", "join", "pop", "push", "concat", "reverse", 38 "shift", "unshift", "slice", "splice", "sort", "filter", "forEach", "some", 39 "every", "map", "indexOf", "lastIndexOf", "reduce", "reduceRight"]; 40 CheckJSCSemantics(Array.prototype, array, "Array prototype"); 41 42 array = [ 43 "toString", "toDateString", "toTimeString", "toLocaleString", 44 "toLocaleDateString", "toLocaleTimeString", "valueOf", "getTime", 45 "getFullYear", "getUTCFullYear", "getMonth", "getUTCMonth", "getDate", 46 "getUTCDate", "getDay", "getUTCDay", "getHours", "getUTCHours", "getMinutes", 47 "getUTCMinutes", "getSeconds", "getUTCSeconds", "getMilliseconds", 48 "getUTCMilliseconds", "getTimezoneOffset", "setTime", "setMilliseconds", 49 "setUTCMilliseconds", "setSeconds", "setUTCSeconds", "setMinutes", 50 "setUTCMinutes", "setHours", "setUTCHours", "setDate", "setUTCDate", 51 "setMonth", "setUTCMonth", "setFullYear", "setUTCFullYear", "toGMTString", 52 "toUTCString", "getYear", "setYear", "toISOString", "toJSON"]; 53 CheckJSCSemantics(Date.prototype, array, "Date prototype"); 54 55 array = [ 56 "random", "abs", "acos", "asin", "atan", "ceil", "cos", "exp", "floor", "log", 57 "round", "sin", "sqrt", "tan", "atan2", "pow", "max", "min"]; 58 CheckJSCSemantics(Math, array, "Math1"); 59 60 CheckEcmaSemantics(Date, ["UTC", "parse", "now"], "Date"); 61 62 array = [ 63 "E", "LN10", "LN2", "LOG2E", "LOG10E", "PI", "SQRT1_2", "SQRT2"]; 64 CheckDontDelete(Math, array, "Math2"); 65 66 array = [ 67 "escape", "unescape", "decodeURI", "decodeURIComponent", "encodeURI", 68 "encodeURIComponent", "isNaN", "isFinite", "parseInt", "parseFloat", "eval", 69 "execScript"]; 70 CheckEcmaSemantics(this, array, "Global"); 71 CheckReadOnlyAttr(this, "Infinity"); 72 73 array = ["exec", "test", "toString", "compile"]; 74 CheckEcmaSemantics(RegExp.prototype, array, "RegExp prototype"); 75 76 array = [ 77 "toString", "toLocaleString", "valueOf", "hasOwnProperty", 78 "isPrototypeOf", "propertyIsEnumerable", "__defineGetter__", 79 "__lookupGetter__", "__defineSetter__", "__lookupSetter__"]; 80 CheckEcmaSemantics(Object.prototype, array, "Object prototype"); 81 82 array = [ 83 "toString", "valueOf", "toJSON"]; 84 CheckEcmaSemantics(Boolean.prototype, array, "Boolean prototype"); 85 86 array = [ 87 "toString", "toLocaleString", "valueOf", "toFixed", "toExponential", 88 "toPrecision", "toJSON"]; 89 CheckEcmaSemantics(Number.prototype, array, "Number prototype"); 90 91 CheckEcmaSemantics(Function.prototype, ["toString"], "Function prototype"); 92 CheckEcmaSemantics(Date.prototype, ["constructor"], "Date prototype constructor"); 93 94 array = [ 95 "charAt", "charCodeAt", "concat", "indexOf", 96 "lastIndexOf", "localeCompare", "match", "replace", "search", "slice", 97 "split", "substring", "substr", "toLowerCase", "toLocaleLowerCase", 98 "toUpperCase", "toLocaleUpperCase", "link", "anchor", "fontcolor", "fontsize", 99 "big", "blink", "bold", "fixed", "italics", "small", "strike", "sub", "sup", 100 "toJSON", "toString", "valueOf"]; 101 CheckJSCSemantics(String.prototype, array, "String prototype"); 102 CheckEcmaSemantics(String, ["fromCharCode"], "String"); 103 104 105 function CheckEcmaSemantics(type, props, name) { 106 print(name); 107 for (var i = 0; i < props.length; i++) { 108 CheckDeletable(type, props[i]); 109 } 110 } 111 112 113 function CheckJSCSemantics(type, props, name) { 114 print(name); 115 for (var i = 0; i < props.length; i++) { 116 CheckNotDeletable(type, props[i]); 117 } 118 } 119 120 121 function CheckDontDelete(type, props, name) { 122 print(name); 123 for (var i = 0; i < props.length; i++) { 124 CheckDontDeleteAttr(type, props[i]); 125 } 126 } 127 128 129 function CheckDeletable(type, prop) { 130 var old = type[prop]; 131 var hasOwnProperty = Object.prototype.hasOwnProperty; 132 if (!type[prop]) return; 133 assertTrue(type.hasOwnProperty(prop), "inherited: " + prop); 134 var deleted = delete type[prop]; 135 assertTrue(deleted, "delete operator returned false: " + prop); 136 assertFalse(hasOwnProperty.call(type, prop), "still there after delete: " + prop); 137 type[prop] = "foo"; 138 assertEquals("foo", type[prop], "not overwritable: " + prop); 139 type[prop] = old; 140 } 141 142 143 function CheckNotDeletable(type, prop) { 144 var old = type[prop]; 145 if (!type[prop]) return; 146 assertTrue(type.hasOwnProperty(prop), "inherited: " + prop); 147 var deleted = delete type[prop]; 148 assertTrue(deleted, "delete operator returned false: " + prop); 149 assertTrue(type.hasOwnProperty(prop), "not there after delete: " + prop); 150 type[prop] = "foo"; 151 assertEquals("foo", type[prop], "not overwritable: " + prop); 152 deleted = delete type[prop]; 153 assertTrue(deleted, "delete operator returned false 2nd time: " + prop); 154 assertEquals(old.toString(), type[prop].toString(), "delete didn't restore the old value: " + prop); 155 } 156 157 158 function CheckDontDeleteAttr(type, prop) { 159 var old = type[prop]; 160 if (!type[prop]) return; 161 assertTrue(type.hasOwnProperty(prop), "inherited: " + prop); 162 var deleted = delete type[prop]; 163 assertFalse(deleted, "delete operator returned true: " + prop); 164 assertTrue(type.hasOwnProperty(prop), "not there after delete: " + prop); 165 type[prop] = "foo"; 166 assertFalse("foo" == type[prop], "overwritable: " + prop); 167 } 168 169 170 function CheckReadOnlyAttr(type, prop) { 171 var old = type[prop]; 172 if (!type[prop]) return; 173 assertTrue(type.hasOwnProperty(prop), "inherited: " + prop); 174 var deleted = delete type[prop]; 175 assertFalse(deleted, "delete operator returned true: " + prop); 176 assertTrue(type.hasOwnProperty(prop), "not there after delete: " + prop); 177 type[prop] = "foo"; 178 assertEquals("foo", type[prop], "overwritable: " + prop); 179 } 180 181 print("OK"); 182
