LibJS: Implement Temporal.ZonedDateTime.prototype.withPlainDate

2025-07-27 13:37:44 +00:00 · 2021-11-05 01:34:31 +00:00 · 2021-11-05 01:34:31 +00:00 · d5f2745a19
commit d5f2745a19
parent 132a56f07c
3 changed files with 118 additions and 0 deletions
--- a/Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.withPlainDate.js
+++ b/Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.withPlainDate.js
@ -0,0 +1,84 @@
+describe("correct behavior", () => {
+    test("length is 1", () => {
+        expect(Temporal.ZonedDateTime.prototype.withPlainDate).toHaveLength(1);
+    });
+
+    function checkExpectedResults(withPlainDateZonedDateTime) {
+        expect(withPlainDateZonedDateTime.epochNanoseconds).toBe(1640467016100200300n);
+        expect(withPlainDateZonedDateTime.epochMicroseconds).toBe(1640467016100200n);
+        expect(withPlainDateZonedDateTime.epochMilliseconds).toBe(1640467016100);
+        expect(withPlainDateZonedDateTime.epochSeconds).toBe(1640467016);
+        expect(withPlainDateZonedDateTime.year).toBe(2021);
+        expect(withPlainDateZonedDateTime.month).toBe(12);
+        expect(withPlainDateZonedDateTime.monthCode).toBe("M12");
+        expect(withPlainDateZonedDateTime.day).toBe(25);
+        expect(withPlainDateZonedDateTime.hour).toBe(21);
+        expect(withPlainDateZonedDateTime.minute).toBe(16);
+        expect(withPlainDateZonedDateTime.second).toBe(56);
+        expect(withPlainDateZonedDateTime.millisecond).toBe(100);
+        expect(withPlainDateZonedDateTime.microsecond).toBe(200);
+        expect(withPlainDateZonedDateTime.nanosecond).toBe(300);
+        expect(withPlainDateZonedDateTime.dayOfWeek).toBe(6);
+        expect(withPlainDateZonedDateTime.dayOfYear).toBe(359);
+        expect(withPlainDateZonedDateTime.weekOfYear).toBe(51);
+        expect(withPlainDateZonedDateTime.hoursInDay).toBe(24);
+        expect(withPlainDateZonedDateTime.daysInWeek).toBe(7);
+        expect(withPlainDateZonedDateTime.daysInYear).toBe(365);
+        expect(withPlainDateZonedDateTime.monthsInYear).toBe(12);
+        expect(withPlainDateZonedDateTime.inLeapYear).toBeFalse();
+        expect(withPlainDateZonedDateTime.offset).toBe("+00:00");
+        expect(withPlainDateZonedDateTime.offsetNanoseconds).toBe(0);
+    }
+
+    test("basic functionality", () => {
+        const plainDateTime = new Temporal.PlainDateTime(2021, 11, 4, 21, 16, 56, 100, 200, 300);
+        const timeZone = new Temporal.TimeZone("UTC");
+        const zonedDateTime = plainDateTime.toZonedDateTime(timeZone);
+        const plainDate = new Temporal.PlainDate(2021, 12, 25);
+        const withPlainDateZonedDateTime = zonedDateTime.withPlainDate(plainDate);
+
+        checkExpectedResults(withPlainDateZonedDateTime);
+    });
+
+    test("plain time-like object", () => {
+        const plainDateTime = new Temporal.PlainDateTime(2021, 11, 4, 21, 16, 56, 100, 200, 300);
+        const timeZone = new Temporal.TimeZone("UTC");
+        const zonedDateTime = plainDateTime.toZonedDateTime(timeZone);
+        const plainDateLike = { year: 2021, month: 12, day: 25 };
+        const withPlainDateZonedDateTime = zonedDateTime.withPlainDate(plainDateLike);
+
+        checkExpectedResults(withPlainDateZonedDateTime);
+    });
+
+    // FIXME: Enable when time string parsing is implemented.
+    test.skip("from plain date string", () => {
+        const plainDateTime = new Temporal.PlainDateTime(2021, 11, 4, 21, 16, 56, 100, 200, 300);
+        const timeZone = new Temporal.TimeZone("UTC");
+        const zonedDateTime = plainDateTime.toZonedDateTime(timeZone);
+        const withPlainDateZonedDateTime = zonedDateTime.withPlainDate("2021-12-25");
+
+        checkExpectedResults(withPlainDateZonedDateTime);
+    });
+});
+
+describe("errors", () => {
+    test("this value must be a Temporal.ZonedDateTime object", () => {
+        expect(() => {
+            Temporal.ZonedDateTime.prototype.withPlainDate.call("foo");
+        }).toThrowWithMessage(TypeError, "Not an object of type Temporal.ZonedDateTime");
+    });
+
+    test("missing properties", () => {
+        expect(() => {
+            new Temporal.ZonedDateTime(1n, {}).withPlainDate({});
+        }).toThrowWithMessage(TypeError, "Required property year is missing or undefined");
+
+        expect(() => {
+            new Temporal.ZonedDateTime(1n, {}).withPlainDate({ year: 1 });
+        }).toThrowWithMessage(TypeError, "Required property month is missing or undefined");
+
+        expect(() => {
+            new Temporal.ZonedDateTime(1n, {}).withPlainDate({ year: 1, month: 1 });
+        }).toThrowWithMessage(TypeError, "Required property day is missing or undefined");
+    });
+});