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37 lines
1.4 KiB
JavaScript
37 lines
1.4 KiB
JavaScript
// Copyright (C) 2023 Igalia, S.L. 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-temporal.calendar.prototype.yearmonthfromfields
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description: Reference ISO day is chosen to be the first of the calendar month
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info: |
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6.d. Perform ! CreateDataPropertyOrThrow(_fields_, *"day"*, *1*<sub>𝔽</sub>).
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e. Let _result_ be ? CalendarDateToISO(_calendar_.[[Identifier]], _fields_, _options_).
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includes: [temporalHelpers.js]
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features: [Temporal]
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---*/
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const result1 = Temporal.PlainYearMonth.from({ year: 2023, monthCode: "M01", day: 13, calendar: "gregory" });
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TemporalHelpers.assertPlainYearMonth(
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result1,
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2023, 1, "M01",
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"reference day is 1 even if day is given",
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"ce", 2023, /* reference day = */ 1
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);
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const result2 = Temporal.PlainYearMonth.from({ year: 2021, monthCode: "M02", day: 50, calendar: "gregory" }, { overflow: "constrain" });
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TemporalHelpers.assertPlainYearMonth(
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result2,
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2021, 2, "M02",
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"reference day is set correctly even if day is out of range (overflow constrain)",
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"ce", 2021, /* reference day = */ 1
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);
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const result3 = Temporal.PlainYearMonth.from({ year: 2021, monthCode: "M02", day: 50, calendar: "gregory" }, { overflow: "reject" });
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TemporalHelpers.assertPlainYearMonth(
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result3,
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2021, 2, "M02",
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"reference day is set correctly even if day is out of range (overflow reject)",
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"ce", 2021, /* reference day = */ 1
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);
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