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46 lines
1.2 KiB
JavaScript
46 lines
1.2 KiB
JavaScript
// Copyright (c) 2016 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-date-value
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es6id: 20.3.2.2
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description: >
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Behavior when coercion via `Symbol.toPrimitive` yields a primitive value
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info: |
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[...]
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3. If NewTarget is not undefined, then
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a. If Type(value) is Object and value has a [[DateValue]] internal slot,
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then
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[...]
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b. Else,
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i. Let v be ? ToPrimitive(value).
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ES6 Section 7.1.1 ToPrimitive ( input [, PreferredType] )
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[...]
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4. Let exoticToPrim be GetMethod(input, @@toPrimitive).
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5. ReturnIfAbrupt(exoticToPrim).
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6. If exoticToPrim is not undefined, then
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a. Let result be Call(exoticToPrim, input, «hint»).
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b. ReturnIfAbrupt(result).
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c. If Type(result) is not Object, return result.
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features: [Symbol.toPrimitive]
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---*/
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var y = {};
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var retVal;
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y[Symbol.toPrimitive] = function() {
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return retVal;
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};
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retVal = 1234;
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assert.sameValue(new Date(y).valueOf(), 1234);
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retVal = '2016-06-03T19:03:52.872Z';
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assert.sameValue(new Date(y).valueOf(), 1464980632872);
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retVal = Symbol.toPrimitive;
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assert.throws(TypeError, function() {
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new Date(y);
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});
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