8d79ff46d0
Eliminates substantial amounts of fragile code duplication and special casing. Also fixes "a".propertyIsEnumerable(0) to correctly return true. R=mstarzinger@chromium.org BUG= Review URL: https://codereview.chromium.org/11420011 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12990 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
90 lines
3.5 KiB
JavaScript
90 lines
3.5 KiB
JavaScript
// Copyright 2011 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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// Test that Object.prototype.propertyIsEnumerable handles array indices
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// correctly.
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var p = Object.create({}, {
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a : { value : 42, enumerable : true },
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b : { value : 42, enumerable : false },
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1 : { value : 42, enumerable : true },
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2 : { value : 42, enumerable : false },
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f : { get: function(){}, enumerable: true },
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g : { get: function(){}, enumerable: false },
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11 : { get: function(){}, enumerable: true },
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12 : { get: function(){}, enumerable: false }
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});
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var o = Object.create(p, {
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c : { value : 42, enumerable : true },
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d : { value : 42, enumerable : false },
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3 : { value : 42, enumerable : true },
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4 : { value : 42, enumerable : false },
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h : { get: function(){}, enumerable: true },
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k : { get: function(){}, enumerable: false },
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13 : { get: function(){}, enumerable: true },
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14 : { get: function(){}, enumerable: false }
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});
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// Inherited properties are ignored.
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assertFalse(o.propertyIsEnumerable("a"));
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assertFalse(o.propertyIsEnumerable("b"));
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assertFalse(o.propertyIsEnumerable("1"));
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assertFalse(o.propertyIsEnumerable("2"));
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// Own properties.
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assertTrue(o.propertyIsEnumerable("c"));
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assertFalse(o.propertyIsEnumerable("d"));
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assertTrue(o.propertyIsEnumerable("3"));
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assertFalse(o.propertyIsEnumerable("4"));
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// Inherited accessors.
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assertFalse(o.propertyIsEnumerable("f"));
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assertFalse(o.propertyIsEnumerable("g"));
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assertFalse(o.propertyIsEnumerable("11"));
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assertFalse(o.propertyIsEnumerable("12"));
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// Own accessors.
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assertTrue(o.propertyIsEnumerable("h"));
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assertFalse(o.propertyIsEnumerable("k"));
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assertTrue(o.propertyIsEnumerable("13"));
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assertFalse(o.propertyIsEnumerable("14"));
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// Nonexisting properties.
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assertFalse(o.propertyIsEnumerable("xxx"));
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assertFalse(o.propertyIsEnumerable("999"));
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// String object properties.
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var o = Object("string");
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// Non-string property on String object.
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o[10] = 42;
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assertTrue(o.propertyIsEnumerable(10));
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assertTrue(o.propertyIsEnumerable(0));
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// Fast elements.
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var o = [1,2,3,4,5];
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assertTrue(o.propertyIsEnumerable(3));
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