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LibJS: Implement Temporal.ZonedDateTime.prototype.until()
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describe("correct behavior", () => {
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test("length is 1", () => {
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expect(Temporal.ZonedDateTime.prototype.until).toHaveLength(1);
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});
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test("basic functionality", () => {
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const values = [
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[0n, 0n, "PT0S"],
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[123456789n, 2345679011n, "PT2.222222222S"],
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[0n, 123456789n, "PT0.123456789S"],
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[123456789n, 0n, "-PT0.123456789S"],
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[0n, 123456789123456789n, "PT34293H33M9.123456789S"],
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[123456789123456789n, 0n, "-PT34293H33M9.123456789S"],
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];
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const utc = new Temporal.TimeZone("UTC");
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for (const [arg, argOther, expected] of values) {
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const zonedDateTime = new Temporal.ZonedDateTime(arg, utc);
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const other = new Temporal.ZonedDateTime(argOther, utc);
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expect(zonedDateTime.until(other).toString()).toBe(expected);
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}
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});
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test("smallestUnit option", () => {
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const utc = new Temporal.TimeZone("UTC");
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const zonedDateTime = new Temporal.ZonedDateTime(0n, utc);
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const other = new Temporal.ZonedDateTime(34401906007008009n, utc);
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const values = [
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["year", "P1Y"],
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["month", "P13M"],
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["week", "P56W"],
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["day", "P398D"],
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["hour", "PT9556H"],
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["minute", "PT9556H5M"],
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["second", "PT9556H5M6S"],
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["millisecond", "PT9556H5M6.007S"],
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["microsecond", "PT9556H5M6.007008S"],
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["nanosecond", "PT9556H5M6.007008009S"],
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];
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for (const [smallestUnit, expected] of values) {
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expect(zonedDateTime.until(other, { smallestUnit }).toString()).toBe(expected);
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}
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});
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test("largestUnit option", () => {
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const utc = new Temporal.TimeZone("UTC");
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const zonedDateTime = new Temporal.ZonedDateTime(0n, utc);
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const other = new Temporal.ZonedDateTime(34401906007008009n, utc);
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const values = [
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["year", "P1Y1M2DT4H5M6.007008009S"],
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["month", "P13M2DT4H5M6.007008009S"],
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["week", "P56W6DT4H5M6.007008009S"],
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["day", "P398DT4H5M6.007008009S"],
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["hour", "PT9556H5M6.007008009S"],
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["minute", "PT573365M6.007008009S"],
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["second", "PT34401906.007008009S"],
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["millisecond", "PT34401906.007008009S"],
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["microsecond", "PT34401906.007008009S"],
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["nanosecond", "PT34401906.007008008S"],
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];
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for (const [largestUnit, expected] of values) {
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expect(zonedDateTime.until(other, { largestUnit }).toString()).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.ZonedDateTime object", () => {
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expect(() => {
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Temporal.ZonedDateTime.prototype.until.call("foo", {});
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}).toThrowWithMessage(TypeError, "Not an object of type Temporal.ZonedDateTime");
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});
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test("cannot compare dates from different calendars", () => {
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const calendarOne = {
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toString() {
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return "calendarOne";
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},
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};
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const calendarTwo = {
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toString() {
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return "calendarTwo";
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},
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};
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const utc = new Temporal.TimeZone("UTC");
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const zonedDateTimeOne = new Temporal.ZonedDateTime(0n, utc, calendarOne);
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const zonedDateTimeTwo = new Temporal.ZonedDateTime(0n, utc, calendarTwo);
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expect(() => {
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zonedDateTimeOne.until(zonedDateTimeTwo);
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}).toThrowWithMessage(RangeError, "Cannot compare dates from two different calendars");
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});
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test("cannot compare dates from different time zones", () => {
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const timeZoneOne = {
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toString() {
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return "timeZoneOne";
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},
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};
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const timeZoneTwo = {
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toString() {
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return "timeZoneTwo";
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},
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};
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const zonedDateTimeOne = new Temporal.ZonedDateTime(0n, timeZoneOne);
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const zonedDateTimeTwo = new Temporal.ZonedDateTime(0n, timeZoneTwo);
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expect(() => {
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zonedDateTimeOne.until(zonedDateTimeTwo, { largestUnit: "day" });
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}).toThrowWithMessage(RangeError, "Cannot compare dates from two different time zones");
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});
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});
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