LibJS: Implement Temporal.ZonedDateTime.prototype.until()

1 files changed, 115 insertions, 0 deletions

diff --git a/Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.until.js b/Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.until.js
new file mode 100644
index 0000000000..8e8fd0d364
--- /dev/null
+++ b/Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.until.js
@@ -0,0 +1,115 @@
+describe("correct behavior", () => {
+    test("length is 1", () => {
+        expect(Temporal.ZonedDateTime.prototype.until).toHaveLength(1);
+    });
+
+    test("basic functionality", () => {
+        const values = [
+            [0n, 0n, "PT0S"],
+            [123456789n, 2345679011n, "PT2.222222222S"],
+            [0n, 123456789n, "PT0.123456789S"],
+            [123456789n, 0n, "-PT0.123456789S"],
+            [0n, 123456789123456789n, "PT34293H33M9.123456789S"],
+            [123456789123456789n, 0n, "-PT34293H33M9.123456789S"],
+        ];
+        const utc = new Temporal.TimeZone("UTC");
+        for (const [arg, argOther, expected] of values) {
+            const zonedDateTime = new Temporal.ZonedDateTime(arg, utc);
+            const other = new Temporal.ZonedDateTime(argOther, utc);
+            expect(zonedDateTime.until(other).toString()).toBe(expected);
+        }
+    });
+
+    test("smallestUnit option", () => {
+        const utc = new Temporal.TimeZone("UTC");
+        const zonedDateTime = new Temporal.ZonedDateTime(0n, utc);
+        const other = new Temporal.ZonedDateTime(34401906007008009n, utc);
+        const values = [
+            ["year", "P1Y"],
+            ["month", "P13M"],
+            ["week", "P56W"],
+            ["day", "P398D"],
+            ["hour", "PT9556H"],
+            ["minute", "PT9556H5M"],
+            ["second", "PT9556H5M6S"],
+            ["millisecond", "PT9556H5M6.007S"],
+            ["microsecond", "PT9556H5M6.007008S"],
+            ["nanosecond", "PT9556H5M6.007008009S"],
+        ];
+        for (const [smallestUnit, expected] of values) {
+            expect(zonedDateTime.until(other, { smallestUnit }).toString()).toBe(expected);
+        }
+    });
+
+    test("largestUnit option", () => {
+        const utc = new Temporal.TimeZone("UTC");
+        const zonedDateTime = new Temporal.ZonedDateTime(0n, utc);
+        const other = new Temporal.ZonedDateTime(34401906007008009n, utc);
+        const values = [
+            ["year", "P1Y1M2DT4H5M6.007008009S"],
+            ["month", "P13M2DT4H5M6.007008009S"],
+            ["week", "P56W6DT4H5M6.007008009S"],
+            ["day", "P398DT4H5M6.007008009S"],
+            ["hour", "PT9556H5M6.007008009S"],
+            ["minute", "PT573365M6.007008009S"],
+            ["second", "PT34401906.007008009S"],
+            ["millisecond", "PT34401906.007008009S"],
+            ["microsecond", "PT34401906.007008009S"],
+            ["nanosecond", "PT34401906.007008008S"],
+        ];
+        for (const [largestUnit, expected] of values) {
+            expect(zonedDateTime.until(other, { largestUnit }).toString()).toBe(expected);
+        }
+    });
+});
+
+describe("errors", () => {
+    test("this value must be a Temporal.ZonedDateTime object", () => {
+        expect(() => {
+            Temporal.ZonedDateTime.prototype.until.call("foo", {});
+        }).toThrowWithMessage(TypeError, "Not an object of type Temporal.ZonedDateTime");
+    });
+
+    test("cannot compare dates from different calendars", () => {
+        const calendarOne = {
+            toString() {
+                return "calendarOne";
+            },
+        };
+
+        const calendarTwo = {
+            toString() {
+                return "calendarTwo";
+            },
+        };
+
+        const utc = new Temporal.TimeZone("UTC");
+        const zonedDateTimeOne = new Temporal.ZonedDateTime(0n, utc, calendarOne);
+        const zonedDateTimeTwo = new Temporal.ZonedDateTime(0n, utc, calendarTwo);
+
+        expect(() => {
+            zonedDateTimeOne.until(zonedDateTimeTwo);
+        }).toThrowWithMessage(RangeError, "Cannot compare dates from two different calendars");
+    });
+
+    test("cannot compare dates from different time zones", () => {
+        const timeZoneOne = {
+            toString() {
+                return "timeZoneOne";
+            },
+        };
+
+        const timeZoneTwo = {
+            toString() {
+                return "timeZoneTwo";
+            },
+        };
+
+        const zonedDateTimeOne = new Temporal.ZonedDateTime(0n, timeZoneOne);
+        const zonedDateTimeTwo = new Temporal.ZonedDateTime(0n, timeZoneTwo);
+
+        expect(() => {
+            zonedDateTimeOne.until(zonedDateTimeTwo, { largestUnit: "day" });
+        }).toThrowWithMessage(RangeError, "Cannot compare dates from two different time zones");
+    });
+});