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LibJS: Implement Temporal.Instant.prototype.toZonedDateTime()
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describe("correct behavior", () => {
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test("length is 1", () => {
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expect(Temporal.Instant.prototype.toZonedDateTime).toHaveLength(1);
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});
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test("basic functionality", () => {
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const instant = new Temporal.Instant(1625614921123456789n);
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const calendar = new Temporal.Calendar("iso8601");
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const timeZone = new Temporal.TimeZone("UTC");
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const zonedDateTime = instant.toZonedDateTime({ calendar, timeZone });
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expect(zonedDateTime.year).toBe(2021);
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expect(zonedDateTime.month).toBe(7);
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expect(zonedDateTime.day).toBe(6);
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expect(zonedDateTime.hour).toBe(23);
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expect(zonedDateTime.minute).toBe(42);
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expect(zonedDateTime.second).toBe(1);
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expect(zonedDateTime.millisecond).toBe(123);
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expect(zonedDateTime.microsecond).toBe(456);
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expect(zonedDateTime.nanosecond).toBe(789);
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expect(zonedDateTime.calendar).toBe(calendar);
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expect(zonedDateTime.timeZone).toBe(timeZone);
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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.Instant object", () => {
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expect(() => {
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Temporal.Instant.prototype.toZonedDateTime.call("foo");
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}).toThrowWithMessage(TypeError, "Not a Temporal.Instant");
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});
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test("items argument must be an object", () => {
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const instant = new Temporal.Instant(0n);
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for (const value of [123, NaN, Infinity, true, false, null, undefined]) {
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expect(() => {
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instant.toZonedDateTime(value);
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}).toThrowWithMessage(TypeError, `${value} is not an object`);
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}
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});
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test("items argument must have a 'calendar' property", () => {
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const instant = new Temporal.Instant(0n);
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expect(() => {
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instant.toZonedDateTime({});
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}).toThrowWithMessage(TypeError, "Required property calendar is missing or undefined");
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});
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test("items argument must have a 'timeZone' property", () => {
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const instant = new Temporal.Instant(0n);
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expect(() => {
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instant.toZonedDateTime({ calendar: {} });
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}).toThrowWithMessage(TypeError, "Required property timeZone is missing or undefined");
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});
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});
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