| // Copyright (C) 2015 André Bargull. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| description: Object.prototype.propertyIsEnumerable with symbol and @@toPrimitive conversion |
| info: | |
| 19.1.3.4 Object.prototype.propertyIsEnumerable ( V ) |
| |
| 1. Let P be ToPropertyKey(V). |
| 2. ReturnIfAbrupt(P). |
| ... |
| es6id: 19.1.3.4 |
| features: [Symbol.toPrimitive] |
| ---*/ |
| |
| var obj = {}; |
| var sym = Symbol(); |
| |
| var callCount = 0; |
| var wrapper = {}; |
| wrapper[Symbol.toPrimitive] = function() { |
| callCount += 1; |
| return sym; |
| }; |
| |
| obj[sym] = 0; |
| |
| assert.sameValue( |
| obj.propertyIsEnumerable(wrapper), |
| true, |
| "Returns true if symbol own enumerable property found" |
| ); |
| |
| assert.sameValue(callCount, 1, "toPrimitive method called exactly once"); |
