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LibJS: Implement Temporal.TimeZone.prototype.getInstantFor()
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describe("correct behavior", () => {
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test("length is 1", () => {
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expect(Temporal.TimeZone.prototype.getInstantFor).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 plainDateTime = new Temporal.PlainDateTime(2021, 7, 6, 18, 14, 47);
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const instant = timeZone.getInstantFor(plainDateTime);
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expect(instant).toBeInstanceOf(Temporal.Instant);
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expect(instant.epochNanoseconds).toBe(1625595287000000000n);
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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 plainDateTime = new Temporal.PlainDateTime(2021, 7, 6, 18, 14, 47);
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const instant = timeZone.getInstantFor(plainDateTime);
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expect(instant).toBeInstanceOf(Temporal.Instant);
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expect(instant.epochNanoseconds).toBe(1625589887000000000n);
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});
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});
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describe("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.getInstantFor.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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