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100 lines
3.9 KiB
JavaScript
100 lines
3.9 KiB
JavaScript
// Copyright 2008 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --allow-natives-syntax
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// Test for http://code.google.com/p/v8/issues/detail?id=334
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var READ_ONLY = 1;
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var DONT_ENUM = 2;
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var DONT_DELETE = 4;
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function AddNamedProperty(object, name, value, attrs) {
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Object.defineProperty(object, name, {
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value,
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configurable: (attrs & DONT_DELETE) === 0,
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enumerable: (attrs & DONT_ENUM) === 0,
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writable: (attrs & READ_ONLY) === 0
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});
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}
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function func1(){}
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function func2(){}
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var object = {__proto__:{}};
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AddNamedProperty(object, "foo", func1, DONT_ENUM | DONT_DELETE);
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AddNamedProperty(object, "bar", func1, DONT_ENUM | READ_ONLY);
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AddNamedProperty(object, "baz", func1, DONT_DELETE | READ_ONLY);
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AddNamedProperty(object.__proto__, "bif", func1, DONT_ENUM | DONT_DELETE);
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object.bif = func2;
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function enumerable(obj) {
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var res = [];
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for (var i in obj) {
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res.push(i);
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}
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res.sort();
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return res;
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}
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// Sanity check: expected initial state.
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assertArrayEquals(["baz", "bif"], enumerable(object), "enum0");
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assertFalse(delete object.foo, "delete foo");
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assertFalse(delete object.baz, "delete baz");
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assertEquals(func1, object.foo, "read foo");
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assertEquals(func1, object.bar, "read bar");
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assertEquals(func1, object.baz, "read baz");
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assertEquals(func2, object.bif, "read bif");
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// Can't assign to READ_ONLY.
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object.bar = "NO WAY";
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assertEquals(func1, object.bar, "read bar 2");
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assertArrayEquals(["baz", "bif"], enumerable(object), "enum1");
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// Assignment to non-readonly. Assignment shouldn't change attributes!
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object.foo = func2;
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assertArrayEquals(["baz", "bif"], enumerable(object), "enum2");
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assertFalse(delete object.foo, "delete foo 2");
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// Delete should erase attributes if value set again.
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assertTrue(delete object.bar, "delete bar");
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assertFalse("bar" in object, "has bar");
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object.bar = func2;
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assertTrue("bar" in object, "has bar 2");
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assertEquals(func2, object.bar, "read bar 3");
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assertArrayEquals(["bar", "baz", "bif"], enumerable(object), "enum3");
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// Unshadowing a prototype property exposes its attributes.
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assertTrue(delete object.bif, "delete bif");
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assertArrayEquals(["bar", "baz"], enumerable(object), "enum4");
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assertEquals(func1, object.bif, "read bif 2");
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// Can't delete prototype property.
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assertTrue(delete object.bif, "delete bif 2");
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assertArrayEquals(["bar", "baz"], enumerable(object), "enum5");
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assertEquals(func1, object.bif, "read bif3");
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