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LibJS: Implement Temporal.PlainYearMonth.from
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describe("correct behavior", () => {
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test("length is 1", () => {
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expect(Temporal.PlainYearMonth.from).toHaveLength(1);
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});
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test("PlainDate instance argument", () => {
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const plainDate = new Temporal.PlainDate(2021, 7, 6);
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const plainYearMonth = Temporal.PlainYearMonth.from(plainDate);
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expect(plainYearMonth.year).toBe(2021);
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expect(plainYearMonth.month).toBe(7);
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expect(plainYearMonth.monthCode).toBe("M07");
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expect(plainYearMonth.daysInYear).toBe(365);
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expect(plainYearMonth.daysInMonth).toBe(31);
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expect(plainYearMonth.monthsInYear).toBe(12);
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expect(plainYearMonth.inLeapYear).toBeFalse();
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});
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test("PlainYearMonth instance argument", () => {
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const plainYearMonth_ = new Temporal.PlainYearMonth(2021, 7);
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const plainYearMonth = Temporal.PlainYearMonth.from(plainYearMonth_);
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expect(plainYearMonth.year).toBe(2021);
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expect(plainYearMonth.month).toBe(7);
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expect(plainYearMonth.monthCode).toBe("M07");
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expect(plainYearMonth.daysInYear).toBe(365);
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expect(plainYearMonth.daysInMonth).toBe(31);
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expect(plainYearMonth.monthsInYear).toBe(12);
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expect(plainYearMonth.inLeapYear).toBeFalse();
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});
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test("ZonedDateTime instance argument", () => {
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const timeZone = new Temporal.TimeZone("UTC");
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const zonedDateTime = new Temporal.ZonedDateTime(1625614921000000000n, timeZone);
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const plainYearMonth = Temporal.PlainYearMonth.from(zonedDateTime);
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expect(plainYearMonth.year).toBe(2021);
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expect(plainYearMonth.month).toBe(7);
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expect(plainYearMonth.monthCode).toBe("M07");
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expect(plainYearMonth.daysInYear).toBe(365);
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expect(plainYearMonth.daysInMonth).toBe(31);
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expect(plainYearMonth.monthsInYear).toBe(12);
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expect(plainYearMonth.inLeapYear).toBeFalse();
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});
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test("fields object argument", () => {
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const object = {
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year: 2021,
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month: 7,
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};
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const plainYearMonth = Temporal.PlainYearMonth.from(object);
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expect(plainYearMonth.year).toBe(2021);
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expect(plainYearMonth.month).toBe(7);
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expect(plainYearMonth.monthCode).toBe("M07");
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expect(plainYearMonth.daysInYear).toBe(365);
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expect(plainYearMonth.daysInMonth).toBe(31);
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expect(plainYearMonth.monthsInYear).toBe(12);
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expect(plainYearMonth.inLeapYear).toBeFalse();
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});
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// Un-skip once ParseISODateTime & ParseTemporalYearMonthString are fully implemented
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test.skip("PlainYearMonth string argument", () => {
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const plainYearMonth = Temporal.PlainYearMonth.from("2021-07-06T23:42:01Z");
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expect(plainYearMonth.year).toBe(2021);
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expect(plainYearMonth.month).toBe(7);
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expect(plainYearMonth.monthCode).toBe("M07");
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expect(plainYearMonth.daysInYear).toBe(365);
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expect(plainYearMonth.daysInMonth).toBe(31);
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expect(plainYearMonth.monthsInYear).toBe(12);
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expect(plainYearMonth.inLeapYear).toBeFalse();
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});
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});
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describe("errors", () => {
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test("missing fields", () => {
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expect(() => {
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Temporal.PlainYearMonth.from({});
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}).toThrowWithMessage(TypeError, "Required property year is missing or undefined");
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expect(() => {
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Temporal.PlainYearMonth.from({ year: 0 });
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}).toThrowWithMessage(TypeError, "Required property month is missing or undefined");
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expect(() => {
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Temporal.PlainYearMonth.from({ month: 1 });
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}).toThrowWithMessage(TypeError, "Required property year is missing or undefined");
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});
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});
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