LibJS: Implement Temporal.PlainDate.prototype.toPlainMonthDay()

1 files changed, 15 insertions, 0 deletions

diff --git a/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainDate/PlainDate.prototype.toPlainMonthDay.js b/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainDate/PlainDate.prototype.toPlainMonthDay.js
new file mode 100644
index 0000000000..4dbbebb24a
--- /dev/null
+++ b/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainDate/PlainDate.prototype.toPlainMonthDay.js
@@ -0,0 +1,15 @@
+describe("correct behavior", () => {
+    test("length is 0", () => {
+        expect(Temporal.PlainDate.prototype.toPlainMonthDay).toHaveLength(0);
+    });
+
+    test("basic functionality", () => {
+        const plainDate = new Temporal.PlainDate(2021, 7, 6);
+        const plainMonthDay = plainDate.toPlainMonthDay();
+        expect(plainMonthDay.calendar).toBe(plainDate.calendar);
+        expect(plainMonthDay.monthCode).toBe("M07");
+        expect(plainMonthDay.day).toBe(6);
+        const fields = plainMonthDay.getISOFields();
+        expect(fields.isoYear).toBe(1972);
+    });
+});