Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2013 the V8 project authors. All rights reserved. |
| 2 | // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. |
| 3 | // |
| 4 | // Redistribution and use in source and binary forms, with or without |
| 5 | // modification, are permitted provided that the following conditions |
| 6 | // are met: |
| 7 | // 1. Redistributions of source code must retain the above copyright |
| 8 | // notice, this list of conditions and the following disclaimer. |
| 9 | // 2. Redistributions in binary form must reproduce the above copyright |
| 10 | // notice, this list of conditions and the following disclaimer in the |
| 11 | // documentation and/or other materials provided with the distribution. |
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| 14 | // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 24 | description('This test makes sure that instance of behaves correctly when the value, constructor, or its prototype are immediates.'); |
| 25 | |
| 26 | // A Constructor to use check for instances of, and an instance called obj. |
| 27 | function Constructor() {} |
| 28 | var obj = new Constructor(); |
| 29 | |
| 30 | // Run a batch of tests; call'testInstanceOf' three times, passing 1, {}, and the object 'obj', which is an instance of Constructor. |
| 31 | function testSet(constructor, testMethod) |
| 32 | { |
| 33 | testMethod["1"]("(1 instanceof " + constructor + ")"); |
| 34 | testMethod["{}"]("({} instanceof " + constructor + ")"); |
| 35 | testMethod["obj"]("(obj instanceof " + constructor + ")"); |
| 36 | } |
| 37 | |
| 38 | // Test set 1, test passing the integer 1 as the constructor to be tested for. |
| 39 | // The constructor being an object is the first thing tested, so these should all throw. |
| 40 | testSet("1", { "1":shouldThrow, "{}":shouldThrow, "obj":shouldThrow }); |
| 41 | |
| 42 | // Test set 2, test passing an empty object ({}) as the constructor to be tested for. |
| 43 | // As well as being an object, the constructor must implement 'HasInstance' (i.e. be a function), so these should all throw too. |
| 44 | testSet("{}", { "1":shouldThrow, "{}":shouldThrow, "obj":shouldThrow }); |
| 45 | |
| 46 | // Test set 3, test passing Constructor as the constructor to be tested for. |
| 47 | // Nothing should except, the third test should pass, since obj is an instance of Constructor. |
| 48 | testSet("Constructor", { "1":shouldBeFalse, "{}":shouldBeFalse, "obj":shouldBeTrue }); |
| 49 | |
| 50 | // Test set 4, test passing Constructor as the constructor to be tested for - with Constructor.prototype set to the integer 1. |
| 51 | // Constructor.prototype being a non-object will cause an exception, /unless/ value is also a non-object, since this is checked first. |
| 52 | Constructor.prototype = 1; |
| 53 | testSet("Constructor", { "1":shouldBeFalse, "{}":shouldThrow, "obj":shouldThrow }); |
| 54 | |
| 55 | // Test set 5, test passing Constructor as the constructor to be tested for - with Constructor.prototype set to an empty object ({}). |
| 56 | // All test fail, no reason to throw. (obj instanceof Constructor) is now false, since Constructor.prototype has changed. |
| 57 | Constructor.prototype = {}; |
| 58 | testSet("Constructor", { "1":shouldBeFalse, "{}":shouldBeFalse, "obj":shouldBeFalse }); |
| 59 | |
| 60 | // Test set 6, test passing Constructor as the constructor to be tested for - with Constructor.prototype set to null. |
| 61 | // Test that behaviour is the same as for test set 4. |
| 62 | Constructor.prototype = null; |
| 63 | testSet("Constructor", { "1":shouldBeFalse, "{}":shouldThrow, "obj":shouldThrow }); |