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LibJS: Implement Temporal.ZonedDateTime.prototype.subtract
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describe("correct behavior", () => {
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test("length is 1", () => {
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expect(Temporal.ZonedDateTime.prototype.subtract).toHaveLength(1);
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});
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test("basic functionality", () => {
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const plainDateTime = new Temporal.PlainDateTime(2021, 11, 12, 0, 22, 30, 100, 200, 300);
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const timeZone = new Temporal.TimeZone("UTC");
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const zonedDateTime = plainDateTime.toZonedDateTime(timeZone);
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const dayDuration = new Temporal.Duration(0, 0, 0, 1);
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const result = zonedDateTime.subtract(dayDuration);
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expect(zonedDateTime.day).toBe(12);
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expect(zonedDateTime.epochNanoseconds).toBe(1636676550100200300n);
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expect(result.day).toBe(11);
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expect(result.epochNanoseconds).toBe(1636590150100200300n);
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});
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test("duration-like object", () => {
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const plainDateTime = new Temporal.PlainDateTime(2021, 11, 12, 0, 22, 30, 100, 200, 300);
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const timeZone = new Temporal.TimeZone("UTC");
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const zonedDateTime = plainDateTime.toZonedDateTime(timeZone);
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const dayDuration = { days: 1 };
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const result = zonedDateTime.subtract(dayDuration);
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expect(zonedDateTime.day).toBe(12);
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expect(zonedDateTime.epochNanoseconds).toBe(1636676550100200300n);
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expect(result.day).toBe(11);
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expect(result.epochNanoseconds).toBe(1636590150100200300n);
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});
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// FIXME: Unskip when ParseTemporalDurationString is implemented.
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test.skip("duration string", () => {
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const plainDateTime = new Temporal.PlainDateTime(2021, 11, 12, 0, 22, 30, 100, 200, 300);
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const timeZone = new Temporal.TimeZone("UTC");
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const zonedDateTime = plainDateTime.toZonedDateTime(timeZone);
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const dayDuration = "P1D";
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const result = zonedDateTime.subtract(dayDuration);
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expect(zonedDateTime.day).toBe(12);
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expect(zonedDateTime.epochNanoseconds).toBe(1636676550100200300n);
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expect(result.day).toBe(11);
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expect(result.epochNanoseconds).toBe(1636590150100200300n);
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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.ZonedDateTime object", () => {
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expect(() => {
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Temporal.ZonedDateTime.prototype.subtract.call("foo");
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}).toThrowWithMessage(TypeError, "Not an object of type Temporal.ZonedDateTime");
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});
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test("invalid duration-like object", () => {
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expect(() => {
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new Temporal.ZonedDateTime(1n, {}).subtract({});
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}).toThrowWithMessage(TypeError, "Invalid duration-like object");
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});
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});
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