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95331ea864
Combining month and day like this doesn't always yield correct results. Use dayOfYear multiplied by the seconds per day instead, which does.
37 lines
1.4 KiB
JavaScript
37 lines
1.4 KiB
JavaScript
describe("correct behavior", () => {
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test("length is 0", () => {
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expect(Temporal.Now.plainDateTimeISO).toHaveLength(0);
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});
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test("basic functionality", () => {
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const plainDateTime = Temporal.Now.plainDateTimeISO();
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expect(plainDateTime).toBeInstanceOf(Temporal.PlainDateTime);
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expect(plainDateTime.calendar.id).toBe("iso8601");
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});
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test("custom time zone", () => {
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const timeZone = {
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getOffsetNanosecondsFor() {
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return 86400000000000;
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},
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};
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const plainDateTimeToEpochSeconds = plainDateTime =>
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(plainDateTime.year - 1970) * 31_556_952 +
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plainDateTime.dayOfYear * 86_400 +
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plainDateTime.hour * 3_600 +
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plainDateTime.minute * 60 +
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plainDateTime.second +
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plainDateTime.millisecond / 1_000 +
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plainDateTime.microsecond / 1_000_000 +
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plainDateTime.nanosecond / 1_000_000_000;
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const plainDateTime = Temporal.Now.plainDateTimeISO();
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const plainDateTimeWithOffset = Temporal.Now.plainDateTimeISO(timeZone);
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// Let's hope the duration between the above two lines is less than a second :^)
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const differenceSeconds =
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plainDateTimeToEpochSeconds(plainDateTimeWithOffset) -
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plainDateTimeToEpochSeconds(plainDateTime);
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expect(Math.floor(differenceSeconds)).toBe(86400);
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});
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});
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