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// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
// Copyright (C) 2023 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-temporal.calendar.prototype.yearmonthfromfields
description: Reference ISO day is chosen to be the first of the calendar month
info: |
6.d. Perform ! CreateDataPropertyOrThrow(_fields_, *"day"*, *1*<sub>𝔽</sub>).
e. Let _result_ be ? CalendarDateToISO(_calendar_.[[Identifier]], _fields_, _options_).
includes: [temporalHelpers.js]
features: [Temporal]
---*/
const cal = new Temporal.Calendar("iso8601");
const result1 = cal.yearMonthFromFields({ year: 2023, monthCode: "M01", day: 13 });
TemporalHelpers.assertPlainYearMonth(
result1,
2023, 1, "M01",
"reference day is 1 even if day is given",
/* era = */ undefined, /* era year = */ undefined, /* reference day = */ 1
);
const result2 = cal.yearMonthFromFields({ year: 2021, monthCode: "M02", day: 50 }, { overflow: "constrain" });
TemporalHelpers.assertPlainYearMonth(
result2,
2021, 2, "M02",
"reference day is 1 even if day is out of range (overflow constrain)",
/* era = */ undefined, /* era year = */ undefined, /* reference day = */ 1
);
const result3 = cal.yearMonthFromFields({ year: 2021, monthCode: "M02", day: 50 }, { overflow: "reject" });
TemporalHelpers.assertPlainYearMonth(
result3,
2021, 2, "M02",
"reference day is 1 even if day is out of range (overflow reject)",
/* era = */ undefined, /* era year = */ undefined, /* reference day = */ 1
);
reportCompare(0, 0);
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