mirror of https://github.com/tc39/test262.git
43 lines
1.2 KiB
JavaScript
43 lines
1.2 KiB
JavaScript
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// Copyright 2019 Google Inc. 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-initializedatetimeformat
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description: >
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Checks handling of the options argument to the DateTimeFormat constructor.
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info: |
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InitializeDateTimeFormat ( dateTimeFormat, locales, options )
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23. Let _opt_.[[FractionalSecondDigits]] be ? GetNumberOption(_options_, `"fractionalSecondDigits"`, 0, 3, 0).
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features: [Intl.DateTimeFormat-fractionalSecondDigits]
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---*/
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const validOptions = [
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[undefined, 0],
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[-0, 0],
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[0, 0],
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["0", 0],
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[1, 1],
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["1", 1],
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[2, 2],
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["2", 2],
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[3, 3],
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["3", 3],
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[2.9, 2],
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["2.9", 2],
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[0.00001, 0],
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[{ toString() { return "3"; } }, 3],
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[{ valueOf() { return -0; }, toString: undefined }, 0],
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];
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for (const [fractionalSecondDigits, expected] of validOptions) {
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const dtf = new Intl.DateTimeFormat("en", { fractionalSecondDigits });
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const options = dtf.resolvedOptions();
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assert.sameValue(options.fractionalSecondDigits, expected);
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const propdesc = Object.getOwnPropertyDescriptor(options, "fractionalSecondDigits");
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if (expected === undefined) {
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assert.sameValue(propdesc, undefined);
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} else {
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assert.sameValue(propdesc.value, expected);
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}
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}
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