64 lines
3.8 KiB
JavaScript
64 lines
3.8 KiB
JavaScript
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// Copyright 2013 the V8 project authors. All rights reserved.
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// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
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//
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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
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// are met:
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// 1. 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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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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// ANY 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 OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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description('This test makes sure that instance of behaves correctly when the value, constructor, or its prototype are immediates.');
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// A Constructor to use check for instances of, and an instance called obj.
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function Constructor() {}
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var obj = new Constructor();
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// Run a batch of tests; call'testInstanceOf' three times, passing 1, {}, and the object 'obj', which is an instance of Constructor.
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function testSet(constructor, testMethod)
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{
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testMethod["1"]("(1 instanceof " + constructor + ")");
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testMethod["{}"]("({} instanceof " + constructor + ")");
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testMethod["obj"]("(obj instanceof " + constructor + ")");
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}
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// Test set 1, test passing the integer 1 as the constructor to be tested for.
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// The constructor being an object is the first thing tested, so these should all throw.
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testSet("1", { "1":shouldThrow, "{}":shouldThrow, "obj":shouldThrow });
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// Test set 2, test passing an empty object ({}) as the constructor to be tested for.
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// As well as being an object, the constructor must implement 'HasInstance' (i.e. be a function), so these should all throw too.
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testSet("{}", { "1":shouldThrow, "{}":shouldThrow, "obj":shouldThrow });
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// Test set 3, test passing Constructor as the constructor to be tested for.
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// Nothing should except, the third test should pass, since obj is an instance of Constructor.
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testSet("Constructor", { "1":shouldBeFalse, "{}":shouldBeFalse, "obj":shouldBeTrue });
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// Test set 4, test passing Constructor as the constructor to be tested for - with Constructor.prototype set to the integer 1.
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// Constructor.prototype being a non-object will cause an exception, /unless/ value is also a non-object, since this is checked first.
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Constructor.prototype = 1;
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testSet("Constructor", { "1":shouldBeFalse, "{}":shouldThrow, "obj":shouldThrow });
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// Test set 5, test passing Constructor as the constructor to be tested for - with Constructor.prototype set to an empty object ({}).
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// All test fail, no reason to throw. (obj instanceof Constructor) is now false, since Constructor.prototype has changed.
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Constructor.prototype = {};
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testSet("Constructor", { "1":shouldBeFalse, "{}":shouldBeFalse, "obj":shouldBeFalse });
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// Test set 6, test passing Constructor as the constructor to be tested for - with Constructor.prototype set to null.
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// Test that behaviour is the same as for test set 4.
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Constructor.prototype = null;
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testSet("Constructor", { "1":shouldBeFalse, "{}":shouldThrow, "obj":shouldThrow });
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