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| 1 // Copyright 2016 the V8 project authors. All rights reserved. | 1 // Copyright 2016 the V8 project authors. All rights reserved. | 
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be | 
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. | 
| 4 | 4 | 
| 5 // Flags: --harmony-instanceof |  | 
| 6 |  | 
| 7 // Make sure it's an error if @@hasInstance isn't a function. | 5 // Make sure it's an error if @@hasInstance isn't a function. | 
| 8 (function() { | 6 (function() { | 
| 9   var F = {}; | 7   var F = {}; | 
| 10   F[Symbol.hasInstance] = null; | 8   F[Symbol.hasInstance] = null; | 
| 11   assertThrows(function() { 0 instanceof F; }, TypeError); | 9   assertThrows(function() { 0 instanceof F; }, TypeError); | 
| 12 })(); | 10 })(); | 
| 13 | 11 | 
| 14 // Make sure the result is coerced to boolean. | 12 // Make sure the result is coerced to boolean. | 
| 15 (function() { | 13 (function() { | 
| 16   var F = {}; | 14   var F = {}; | 
| (...skipping 43 matching lines...) Expand 10 before | Expand all | Expand 10 after  Loading... | 
| 60 (function() { | 58 (function() { | 
| 61   function F() {} | 59   function F() {} | 
| 62   var counter = 0; | 60   var counter = 0; | 
| 63   var proto = Object.getPrototypeOf(F); | 61   var proto = Object.getPrototypeOf(F); | 
| 64   Object.setPrototypeOf(F, null); | 62   Object.setPrototypeOf(F, null); | 
| 65   F[Symbol.hasInstance] = function(v) { ++counter; return true }; | 63   F[Symbol.hasInstance] = function(v) { ++counter; return true }; | 
| 66   Object.setPrototypeOf(F, proto); | 64   Object.setPrototypeOf(F, proto); | 
| 67   assertTrue(1 instanceof F); | 65   assertTrue(1 instanceof F); | 
| 68   assertEquals(1, counter); | 66   assertEquals(1, counter); | 
| 69 })(); | 67 })(); | 
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