diff --git a/packages/shared-components/src/utils/I18nApi.test.ts b/packages/shared-components/src/utils/I18nApi.test.ts
new file mode 100644
index 0000000000..e8f7dd36bc
--- /dev/null
+++ b/packages/shared-components/src/utils/I18nApi.test.ts
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2025 Element Creations Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+import { TranslationKey } from "../i18nKeys";
+import { I18nApi } from "./I18nApi";
+
+describe("I18nApi", () => {
+    it("can register a translation and use it", () => {
+        const i18n = new I18nApi();
+        i18n.register({
+            "hello.world": {
+                en: "Hello, World!",
+            },
+        });
+
+        expect(i18n.translate("hello.world" as TranslationKey)).toBe("Hello, World!");
+    });
+});