LibJS: Implement Temporal.ZonedDateTime.prototype.add/subtract/equals

Author: https://github.com/trflynn89 Commit: 336efa5e3f Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2577 Reviewed-by: https://github.com/shannonbooth ✅
2025-09-02 15:46:33 +00:00 · 2024-11-25 12:34:35 -05:00 · 2024-11-25 12:34:35 -05:00 · 336efa5e3f · 2024-11-26 10:03:47 +00:00
commit 336efa5e3f
parent 4ef21614e9
9 changed files with 271 additions and 0 deletions
--- a/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.add.js
+++ b/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.add.js
@ -0,0 +1,58 @@
+describe("correct behavior", () => {
+    test("length is 1", () => {
+        expect(Temporal.ZonedDateTime.prototype.add).toHaveLength(1);
+    });
+
+    test("basic functionality", () => {
+        const plainDateTime = new Temporal.PlainDateTime(2021, 11, 12, 0, 22, 30, 100, 200, 300);
+        const zonedDateTime = plainDateTime.toZonedDateTime("UTC");
+        const dayDuration = new Temporal.Duration(0, 0, 0, 1);
+        const result = zonedDateTime.add(dayDuration);
+
+        expect(zonedDateTime.day).toBe(12);
+        expect(zonedDateTime.epochNanoseconds).toBe(1636676550100200300n);
+
+        expect(result.day).toBe(13);
+        expect(result.epochNanoseconds).toBe(1636762950100200300n);
+    });
+
+    test("duration-like object", () => {
+        const plainDateTime = new Temporal.PlainDateTime(2021, 11, 12, 0, 22, 30, 100, 200, 300);
+        const zonedDateTime = plainDateTime.toZonedDateTime("UTC");
+        const dayDuration = { days: 1 };
+        const result = zonedDateTime.add(dayDuration);
+
+        expect(zonedDateTime.day).toBe(12);
+        expect(zonedDateTime.epochNanoseconds).toBe(1636676550100200300n);
+
+        expect(result.day).toBe(13);
+        expect(result.epochNanoseconds).toBe(1636762950100200300n);
+    });
+
+    test("duration string", () => {
+        const plainDateTime = new Temporal.PlainDateTime(2021, 11, 12, 0, 22, 30, 100, 200, 300);
+        const zonedDateTime = plainDateTime.toZonedDateTime("UTC");
+        const dayDuration = "P1D";
+        const result = zonedDateTime.add(dayDuration);
+
+        expect(zonedDateTime.day).toBe(12);
+        expect(zonedDateTime.epochNanoseconds).toBe(1636676550100200300n);
+
+        expect(result.day).toBe(13);
+        expect(result.epochNanoseconds).toBe(1636762950100200300n);
+    });
+});
+
+describe("errors", () => {
+    test("this value must be a Temporal.ZonedDateTime object", () => {
+        expect(() => {
+            Temporal.ZonedDateTime.prototype.add.call("foo");
+        }).toThrowWithMessage(TypeError, "Not an object of type Temporal.ZonedDateTime");
+    });
+
+    test("invalid duration-like object", () => {
+        expect(() => {
+            new Temporal.ZonedDateTime(1n, "UTC").add({});
+        }).toThrowWithMessage(TypeError, "Invalid duration-like object");
+    });
+});
--- a/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.equals.js
+++ b/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.equals.js
@ -0,0 +1,23 @@
+describe("correct behavior", () => {
+    test("length is 1", () => {
+        expect(Temporal.ZonedDateTime.prototype.equals).toHaveLength(1);
+    });
+
+    test("basic functionality", () => {
+        const zonedDateTimeOne = new Temporal.ZonedDateTime(1n, "UTC");
+        const zonedDateTimeTwo = new Temporal.ZonedDateTime(2n, "UTC");
+
+        expect(zonedDateTimeOne.equals(zonedDateTimeOne)).toBeTrue();
+        expect(zonedDateTimeTwo.equals(zonedDateTimeTwo)).toBeTrue();
+        expect(zonedDateTimeOne.equals(zonedDateTimeTwo)).toBeFalse();
+        expect(zonedDateTimeTwo.equals(zonedDateTimeOne)).toBeFalse();
+    });
+});
+
+describe("errors", () => {
+    test("this value must be a Temporal.ZonedDateTime object", () => {
+        expect(() => {
+            Temporal.ZonedDateTime.prototype.equals.call("foo");
+        }).toThrowWithMessage(TypeError, "Not an object of type Temporal.ZonedDateTime");
+    });
+});
--- a/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.subtract.js
+++ b/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.subtract.js
@ -0,0 +1,58 @@
+describe("correct behavior", () => {
+    test("length is 1", () => {
+        expect(Temporal.ZonedDateTime.prototype.subtract).toHaveLength(1);
+    });
+
+    test("basic functionality", () => {
+        const plainDateTime = new Temporal.PlainDateTime(2021, 11, 12, 0, 22, 30, 100, 200, 300);
+        const zonedDateTime = plainDateTime.toZonedDateTime("UTC");
+        const dayDuration = new Temporal.Duration(0, 0, 0, 1);
+        const result = zonedDateTime.subtract(dayDuration);
+
+        expect(zonedDateTime.day).toBe(12);
+        expect(zonedDateTime.epochNanoseconds).toBe(1636676550100200300n);
+
+        expect(result.day).toBe(11);
+        expect(result.epochNanoseconds).toBe(1636590150100200300n);
+    });
+
+    test("duration-like object", () => {
+        const plainDateTime = new Temporal.PlainDateTime(2021, 11, 12, 0, 22, 30, 100, 200, 300);
+        const zonedDateTime = plainDateTime.toZonedDateTime("UTC");
+        const dayDuration = { days: 1 };
+        const result = zonedDateTime.subtract(dayDuration);
+
+        expect(zonedDateTime.day).toBe(12);
+        expect(zonedDateTime.epochNanoseconds).toBe(1636676550100200300n);
+
+        expect(result.day).toBe(11);
+        expect(result.epochNanoseconds).toBe(1636590150100200300n);
+    });
+
+    test("duration string", () => {
+        const plainDateTime = new Temporal.PlainDateTime(2021, 11, 12, 0, 22, 30, 100, 200, 300);
+        const zonedDateTime = plainDateTime.toZonedDateTime("UTC");
+        const dayDuration = "P1D";
+        const result = zonedDateTime.subtract(dayDuration);
+
+        expect(zonedDateTime.day).toBe(12);
+        expect(zonedDateTime.epochNanoseconds).toBe(1636676550100200300n);
+
+        expect(result.day).toBe(11);
+        expect(result.epochNanoseconds).toBe(1636590150100200300n);
+    });
+});
+
+describe("errors", () => {
+    test("this value must be a Temporal.ZonedDateTime object", () => {
+        expect(() => {
+            Temporal.ZonedDateTime.prototype.subtract.call("foo");
+        }).toThrowWithMessage(TypeError, "Not an object of type Temporal.ZonedDateTime");
+    });
+
+    test("invalid duration-like object", () => {
+        expect(() => {
+            new Temporal.ZonedDateTime(1n, "UTC").subtract({});
+        }).toThrowWithMessage(TypeError, "Invalid duration-like object");
+    });
+});