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LibJS: Implement Temporal.TimeZone.prototype.getOffsetStringFor()
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describe("correct behavior", () => {
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test("length is 1", () => {
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expect(Temporal.TimeZone.prototype.getOffsetStringFor).toHaveLength(1);
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});
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test("basic functionality", () => {
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const timeZone = new Temporal.TimeZone("UTC");
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const instant = new Temporal.Instant(0n);
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expect(timeZone.getOffsetStringFor(instant)).toBe("+00:00");
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});
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test("custom offset", () => {
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const timeZone = new Temporal.TimeZone("+01:30");
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const instant = new Temporal.Instant(0n);
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expect(timeZone.getOffsetStringFor(instant)).toBe("+01:30");
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});
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});
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test("errors", () => {
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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.getOffsetStringFor.call("foo");
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}).toThrowWithMessage(TypeError, "Not a Temporal.TimeZone");
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});
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});
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