mirror of https://github.com/tc39/test262.git
49 lines
1.3 KiB
JavaScript
49 lines
1.3 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: Invocation of `Symbol.toPrimitive` method
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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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[...]
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ES6 Section 7.1.1 ToPrimitive ( input [, PreferredType] )
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1. If PreferredType was not passed, let hint be "default".
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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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[...]
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features: [Symbol.toPrimitive]
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---*/
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var y = {};
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var callCount = 0;
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var thisVal, args;
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y[Symbol.toPrimitive] = function() {
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callCount += 1;
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thisVal = this;
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args = arguments;
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};
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new Date(y);
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assert.sameValue(callCount, 1, 'method invoked exactly once');
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assert.sameValue(thisVal, y, '`this` value is the object being compared');
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assert.sameValue(args.length, 1, 'method invoked with exactly one argument');
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assert.sameValue(
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args[0],
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'default',
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'method invoked with the string "default" as the first argument'
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);
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