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// Copyright 2009 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 we match JSC in making some functions undeletable.
// See http://code.google.com/p/chromium/issues/detail?id=1717
// The functions on these prototypes are not just undeletable. It is
// possible to override them with new definitions, then get the old
// version back by deleting the new definition.
var array;
array = [
"toString", "toLocaleString", "join", "pop", "push", "concat", "reverse",
"shift", "unshift", "slice", "splice", "sort", "filter", "forEach", "some",
"every", "map", "indexOf", "lastIndexOf", "reduce", "reduceRight"];
CheckJSCSemantics(Array.prototype, array, "Array prototype");
var old_Array_prototype = Array.prototype;
var new_Array_prototype = {};
for (var i = 0; i < 7; i++) {
Array.prototype = new_Array_prototype;
assertEquals(old_Array_prototype, Array.prototype);
}
array = [
"toString", "toDateString", "toTimeString", "toLocaleString",
"toLocaleDateString", "toLocaleTimeString", "valueOf", "getTime",
"getFullYear", "getUTCFullYear", "getMonth", "getUTCMonth", "getDate",
"getUTCDate", "getDay", "getUTCDay", "getHours", "getUTCHours", "getMinutes",
"getUTCMinutes", "getSeconds", "getUTCSeconds", "getMilliseconds",
"getUTCMilliseconds", "getTimezoneOffset", "setTime", "setMilliseconds",
"setUTCMilliseconds", "setSeconds", "setUTCSeconds", "setMinutes",
"setUTCMinutes", "setHours", "setUTCHours", "setDate", "setUTCDate",
"setMonth", "setUTCMonth", "setFullYear", "setUTCFullYear", "toGMTString",
"toUTCString", "getYear", "setYear", "toISOString", "toJSON"];
CheckJSCSemantics(Date.prototype, array, "Date prototype");
array = [
"random", "abs", "acos", "asin", "atan", "ceil", "cos", "exp", "floor", "log",
"round", "sin", "sqrt", "tan", "atan2", "pow", "max", "min"];
CheckJSCSemantics(Math, array, "Math1");
CheckEcmaSemantics(Date, ["UTC", "parse", "now"], "Date");
array = [
"E", "LN10", "LN2", "LOG2E", "LOG10E", "PI", "SQRT1_2", "SQRT2"];
CheckDontDelete(Math, array, "Math2");
array = [
"escape", "unescape", "decodeURI", "decodeURIComponent", "encodeURI",
"encodeURIComponent", "isNaN", "isFinite", "parseInt", "parseFloat", "eval",
"execScript"];
CheckEcmaSemantics(this, array, "Global");
CheckReadOnlyAttr(this, "Infinity");
array = ["exec", "test", "toString", "compile"];
CheckEcmaSemantics(RegExp.prototype, array, "RegExp prototype");
array = [
"toString", "toLocaleString", "valueOf", "hasOwnProperty",
"isPrototypeOf", "propertyIsEnumerable", "__defineGetter__",
"__lookupGetter__", "__defineSetter__", "__lookupSetter__"];
CheckEcmaSemantics(Object.prototype, array, "Object prototype");
var old_Object_prototype = Object.prototype;
var new_Object_prototype = {};
for (var i = 0; i < 7; i++) {
Object.prototype = new_Object_prototype;
assertEquals(old_Object_prototype, Object.prototype);
}
array = [
"toString", "valueOf", "toJSON"];
CheckEcmaSemantics(Boolean.prototype, array, "Boolean prototype");
array = [
"toString", "toLocaleString", "valueOf", "toFixed", "toExponential",
"toPrecision", "toJSON"];
CheckEcmaSemantics(Number.prototype, array, "Number prototype");
CheckEcmaSemantics(Function.prototype, ["toString"], "Function prototype");
CheckEcmaSemantics(Date.prototype, ["constructor"], "Date prototype constructor");
array = [
"charAt", "charCodeAt", "concat", "indexOf",
"lastIndexOf", "localeCompare", "match", "replace", "search", "slice",
"split", "substring", "substr", "toLowerCase", "toLocaleLowerCase",
"toUpperCase", "toLocaleUpperCase", "link", "anchor", "fontcolor", "fontsize",
"big", "blink", "bold", "fixed", "italics", "small", "strike", "sub", "sup",
"toJSON", "toString", "valueOf"];
CheckJSCSemantics(String.prototype, array, "String prototype");
CheckEcmaSemantics(String, ["fromCharCode"], "String");
function CheckEcmaSemantics(type, props, name) {
print(name);
for (var i = 0; i < props.length; i++) {
CheckDeletable(type, props[i]);
}
}
function CheckJSCSemantics(type, props, name) {
print(name);
for (var i = 0; i < props.length; i++) {
CheckNotDeletable(type, props[i]);
}
}
function CheckDontDelete(type, props, name) {
print(name);
for (var i = 0; i < props.length; i++) {
CheckDontDeleteAttr(type, props[i]);
}
}
function CheckDeletable(type, prop) {
var old = type[prop];
var hasOwnProperty = Object.prototype.hasOwnProperty;
if (!type[prop]) return;
assertTrue(type.hasOwnProperty(prop), "inherited: " + prop);
var deleted = delete type[prop];
assertTrue(deleted, "delete operator returned false: " + prop);
assertFalse(hasOwnProperty.call(type, prop), "still there after delete: " + prop);
type[prop] = "foo";
assertEquals("foo", type[prop], "not overwritable: " + prop);
type[prop] = old;
}
function CheckNotDeletable(type, prop) {
var old = type[prop];
if (!type[prop]) return;
assertTrue(type.hasOwnProperty(prop), "inherited: " + prop);
var deleted = delete type[prop];
assertTrue(deleted, "delete operator returned false: " + prop);
assertTrue(type.hasOwnProperty(prop), "not there after delete: " + prop);
type[prop] = "foo";
assertEquals("foo", type[prop], "not overwritable: " + prop);
deleted = delete type[prop];
assertTrue(deleted, "delete operator returned false 2nd time: " + prop);
assertEquals(old.toString(), type[prop].toString(), "delete didn't restore the old value: " + prop);
}
function CheckDontDeleteAttr(type, prop) {
var old = type[prop];
if (!type[prop]) return;
assertTrue(type.hasOwnProperty(prop), "inherited: " + prop);
var deleted = delete type[prop];
assertFalse(deleted, "delete operator returned true: " + prop);
assertTrue(type.hasOwnProperty(prop), "not there after delete: " + prop);
type[prop] = "foo";
assertFalse("foo" == type[prop], "overwritable: " + prop);
}
function CheckReadOnlyAttr(type, prop) {
var old = type[prop];
if (!type[prop]) return;
assertTrue(type.hasOwnProperty(prop), "inherited: " + prop);
var deleted = delete type[prop];
assertFalse(deleted, "delete operator returned true: " + prop);
assertTrue(type.hasOwnProperty(prop), "not there after delete: " + prop);
type[prop] = "foo";
assertEquals("foo", type[prop], "overwritable: " + prop);
}
print("OK");
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