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// Copyright 2019 Google Inc. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-initializedatetimeformat
description: >
Checks handling of the options argument to the DateTimeFormat constructor.
info: |
InitializeDateTimeFormat ( dateTimeFormat, locales, options )
23. Let _opt_.[[FractionalSecondDigits]] be ? GetNumberOption(_options_, `"fractionalSecondDigits"`, 0, 3, 0).
features: [Intl.DateTimeFormat-fractionalSecondDigits]
---*/
const validOptions = [
[undefined, undefined],
[1, 1],
["1", 1],
[2, 2],
["2", 2],
[3, 3],
["3", 3],
[2.9, 2],
["2.9", 2],
[1.00001, 1],
[{ toString() { return "3"; } }, 3],
];
for (const [fractionalSecondDigits, expected] of validOptions) {
const dtf = new Intl.DateTimeFormat("en", { fractionalSecondDigits });
const options = dtf.resolvedOptions();
assert.sameValue(options.fractionalSecondDigits, expected);
const propdesc = Object.getOwnPropertyDescriptor(options, "fractionalSecondDigits");
if (expected === undefined) {
assert.sameValue(propdesc, undefined);
} else {
assert.sameValue(propdesc.value, expected);
}
}
reportCompare(0, 0);
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