| // Copyright (c) 2016 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: sec-date-value |
| description: > |
| Behavior when coercion via `Symbol.toPrimitive` yields a primitive value |
| info: | |
| [...] |
| 3. If NewTarget is not undefined, then |
| a. If Type(value) is Object and value has a [[DateValue]] internal slot, |
| then |
| [...] |
| b. Else, |
| i. Let v be ? ToPrimitive(value). |
| |
| ES6 Section 7.1.1 ToPrimitive ( input [, PreferredType] ) |
| |
| [...] |
| 4. Let exoticToPrim be GetMethod(input, @@toPrimitive). |
| 5. ReturnIfAbrupt(exoticToPrim). |
| 6. If exoticToPrim is not undefined, then |
| a. Let result be Call(exoticToPrim, input, «hint»). |
| b. ReturnIfAbrupt(result). |
| c. If Type(result) is not Object, return result. |
| features: [Symbol.toPrimitive] |
| ---*/ |
| |
| var y = {}; |
| var retVal; |
| |
| y[Symbol.toPrimitive] = function() { |
| return retVal; |
| }; |
| |
| retVal = 1234; |
| assert.sameValue(new Date(y).valueOf(), 1234); |
| |
| retVal = '2016-06-03T19:03:52.872Z'; |
| assert.sameValue(new Date(y).valueOf(), 1464980632872); |
| |
| retVal = Symbol.toPrimitive; |
| assert.throws(TypeError, function() { |
| new Date(y); |
| }); |