LibJS: Implement Temporal.PlainMonthDay.prototype.toLocaleString()

1 files changed, 23 insertions, 0 deletions

diff --git a/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainMonthDay/PlainMonthDay.prototype.toLocaleString.js b/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainMonthDay/PlainMonthDay.prototype.toLocaleString.js
new file mode 100644
index 0000000000..388c4269f1
--- /dev/null
+++ b/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainMonthDay/PlainMonthDay.prototype.toLocaleString.js
@@ -0,0 +1,23 @@
+describe("correct behavior", () => {
+    test("length is 0", () => {
+        expect(Temporal.PlainMonthDay.prototype.toLocaleString).toHaveLength(0);
+    });
+
+    test("basic functionality", () => {
+        let plainMonthDay;
+
+        plainMonthDay = new Temporal.PlainMonthDay(7, 6);
+        expect(plainMonthDay.toLocaleString()).toBe("07-06");
+
+        plainMonthDay = new Temporal.PlainMonthDay(7, 6, { toString: () => "foo" }, 2021);
+        expect(plainMonthDay.toLocaleString()).toBe("2021-07-06[u-ca=foo]");
+    });
+});
+
+describe("errors", () => {
+    test("this value must be a Temporal.PlainMonthDay object", () => {
+        expect(() => {
+            Temporal.PlainMonthDay.prototype.toLocaleString.call("foo");
+        }).toThrowWithMessage(TypeError, "Not a Temporal.PlainMonthDay");
+    });
+});