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LibJS: Only allow TimeZone this value in TimeZone#getPlainDateTimeFor
This is a normative change in the Temporal spec.
See: 2644fc6
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parent
7729598b5b
commit
cf5f08b317
2 changed files with 15 additions and 28 deletions
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@ -26,35 +26,21 @@ describe("correct behavior", () => {
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const plainDateTime = timeZone.getPlainDateTimeFor(instant, calendar);
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expect(plainDateTime.calendar).toBe(calendar);
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});
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test("non-TimeZone this value", () => {
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const timeZoneLike = {
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getOffsetNanosecondsFor() {
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return 123;
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},
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};
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const instant = new Temporal.Instant(0n);
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const plainDateTime = Temporal.TimeZone.prototype.getPlainDateTimeFor.call(
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timeZoneLike,
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instant
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);
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expect(plainDateTime.year).toBe(1970);
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expect(plainDateTime.month).toBe(1);
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expect(plainDateTime.day).toBe(1);
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expect(plainDateTime.hour).toBe(0);
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expect(plainDateTime.minute).toBe(0);
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expect(plainDateTime.second).toBe(0);
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expect(plainDateTime.millisecond).toBe(0);
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expect(plainDateTime.microsecond).toBe(0);
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expect(plainDateTime.nanosecond).toBe(123);
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});
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});
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describe("errors", () => {
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test("custom time zone doesn't have a getOffsetNanosecondsFor function", () => {
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test("time zone doesn't have a getOffsetNanosecondsFor function", () => {
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const timeZone = new Temporal.TimeZone("UTC");
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timeZone.getOffsetNanosecondsFor = undefined;
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const instant = new Temporal.Instant(1n);
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expect(() => {
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Temporal.TimeZone.prototype.getPlainDateTimeFor.call({}, instant);
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timeZone.getPlainDateTimeFor(instant);
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}).toThrowWithMessage(TypeError, "null is not a function");
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});
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test("this value must be a Temporal.TimeZone object", () => {
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expect(() => {
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Temporal.TimeZone.prototype.getPlainDateTimeFor.call("foo");
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}).toThrowWithMessage(TypeError, "Not an object of type Temporal.TimeZone");
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});
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});
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