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LibJS/Tests: Add tests for Temporal.Instant() constructor
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describe("errors", () => {
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test("called without new", () => {
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expect(() => {
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Temporal.Instant();
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}).toThrowWithMessage(TypeError, "Temporal.Instant constructor must be called with 'new'");
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});
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test("argument must be coercible to bigint", () => {
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expect(() => {
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new Temporal.Instant(123);
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}).toThrowWithMessage(TypeError, "Cannot convert number to BigInt");
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expect(() => {
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new Temporal.Instant("foo");
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}).toThrowWithMessage(SyntaxError, "Invalid value for BigInt: foo");
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});
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});
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describe("normal behavior", () => {
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test("length is 1", () => {
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expect(Temporal.Instant).toHaveLength(1);
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});
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test("basic functionality", () => {
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const instant = new Temporal.Instant(123n);
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expect(instant.epochNanoseconds).toBe(123n);
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expect(typeof instant).toBe("object");
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expect(instant).toBeInstanceOf(Temporal.Instant);
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expect(Object.getPrototypeOf(instant)).toBe(Temporal.Instant.prototype);
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});
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});
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