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

1 files changed, 18 insertions, 0 deletions

diff --git a/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainTime/PlainTime.prototype.toLocaleString.js b/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainTime/PlainTime.prototype.toLocaleString.js
new file mode 100644
index 0000000000..05a5ce420e
--- /dev/null
+++ b/Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainTime/PlainTime.prototype.toLocaleString.js
@@ -0,0 +1,18 @@
+describe("correct behavior", () => {
+    test("length is 0", () => {
+        expect(Temporal.PlainTime.prototype.toLocaleString).toHaveLength(0);
+    });
+
+    test("basic functionality", () => {
+        const plainTime = new Temporal.PlainTime(18, 14, 47, 123, 456, 789);
+        expect(plainTime.toLocaleString()).toBe("18:14:47.123456789");
+    });
+});
+
+describe("errors", () => {
+    test("this value must be a Temporal.PlainTime object", () => {
+        expect(() => {
+            Temporal.PlainTime.prototype.toLocaleString.call("foo");
+        }).toThrowWithMessage(TypeError, "Not a Temporal.PlainTime");
+    });
+});