| // Copyright (C) 2015 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: sec-date.prototype-@@toprimitive |
| description: > |
| Behavior when `hint` is "string" and first try is not callable |
| info: | |
| 1. Let O be the this value. |
| 2. If Type(O) is not Object, throw a TypeError exception. |
| 3. If hint is the String value "string" or the String value "default", then |
| a. Let tryFirst be "string". |
| 4. Else if hint is the String value "number", then |
| a. Let tryFirst be "number". |
| 5. Else, throw a TypeError exception. |
| 6. Return OrdinaryToPrimitive(O, tryFirst). |
| features: [Symbol.toPrimitive] |
| ---*/ |
| |
| var voCallCount = 0; |
| var obj = { |
| valueOf: function() { |
| voCallCount += 1; |
| return 'valueOf test262'; |
| }, |
| toString: null |
| }; |
| |
| assert.sameValue( |
| Date.prototype[Symbol.toPrimitive].call(obj, 'string'), |
| 'valueOf test262', |
| '`valueOf` is used as a fallback when `toString` is not callable' |
| ); |
| assert.sameValue(voCallCount, 1, '`valueOf` method was invoked exactly once'); |