LibJS: Implement Temporal.ZonedDateTime.prototype.eraYear

1 files changed, 26 insertions, 0 deletions

diff --git a/Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.eraYear.js b/Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.eraYear.js
new file mode 100644
index 0000000000..304d9eea02
--- /dev/null
+++ b/Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.eraYear.js
@@ -0,0 +1,26 @@
+describe("correct behavior", () => {
+    test("basic functionality", () => {
+        const timeZone = new Temporal.TimeZone("UTC");
+        const zonedDateTime = new Temporal.ZonedDateTime(1625614921000000000n, timeZone);
+        expect(zonedDateTime.eraYear).toBeUndefined();
+    });
+
+    test("calendar with custom eraYear function", () => {
+        const timeZone = new Temporal.TimeZone("UTC");
+        const calendar = {
+            eraYear() {
+                return 123;
+            },
+        };
+        const zonedDateTime = new Temporal.ZonedDateTime(1625614921000000000n, timeZone, calendar);
+        expect(zonedDateTime.eraYear).toBe(123);
+    });
+});
+
+describe("errors", () => {
+    test("this value must be a Temporal.ZonedDateTime object", () => {
+        expect(() => {
+            Reflect.get(Temporal.ZonedDateTime.prototype, "eraYear", "foo");
+        }).toThrowWithMessage(TypeError, "Not a Temporal.ZonedDateTime");
+    });
+});