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LibJS: Implement Temporal.Instant.prototype.toString()
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14 changed files with 396 additions and 6 deletions
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describe("correct behavior", () => {
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test("length is 0", () => {
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expect(Temporal.Instant.prototype.toString).toHaveLength(0);
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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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expect(instant.toString()).toBe("2021-07-06T23:42:01.123456789Z");
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});
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test("timeZone option", () => {
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const instant = new Temporal.Instant(1625614921123456789n);
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const options = { timeZone: new Temporal.TimeZone("+01:30") };
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expect(instant.toString(options)).toBe("2021-07-07T01:12:01.123456789+01:30");
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});
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test("fractionalSecondDigits option", () => {
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const instant = new Temporal.Instant(1625614921123456000n);
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const values = [
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["auto", "2021-07-06T23:42:01.123456Z"],
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[0, "2021-07-06T23:42:01Z"],
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[1, "2021-07-06T23:42:01.1Z"],
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[2, "2021-07-06T23:42:01.12Z"],
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[3, "2021-07-06T23:42:01.123Z"],
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[4, "2021-07-06T23:42:01.1234Z"],
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[5, "2021-07-06T23:42:01.12345Z"],
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[6, "2021-07-06T23:42:01.123456Z"],
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[7, "2021-07-06T23:42:01.1234560Z"],
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[8, "2021-07-06T23:42:01.12345600Z"],
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[9, "2021-07-06T23:42:01.123456000Z"],
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];
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for (const [fractionalSecondDigits, expected] of values) {
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const options = { fractionalSecondDigits };
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expect(instant.toString(options)).toBe(expected);
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}
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// Ignored when smallestUnit is given
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expect(instant.toString({ smallestUnit: "minute", fractionalSecondDigits: 9 })).toBe(
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"2021-07-06T23:42Z"
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);
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});
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test("smallestUnit option", () => {
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const instant = new Temporal.Instant(1625614921123456789n);
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const values = [
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["minute", "2021-07-06T23:42Z"],
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["second", "2021-07-06T23:42:01Z"],
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["millisecond", "2021-07-06T23:42:01.123Z"],
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["microsecond", "2021-07-06T23:42:01.123456Z"],
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["nanosecond", "2021-07-06T23:42:01.123456789Z"],
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];
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for (const [smallestUnit, expected] of values) {
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const options = { smallestUnit };
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expect(instant.toString(options)).toBe(expected);
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}
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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.toString.call("foo");
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}).toThrowWithMessage(TypeError, "Not a Temporal.Instant");
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});
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});
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