feat: show call participants in room list (Discord-style)

apps/web/test/unit-tests/modules/CustomisationsApi-test.ts

@@ -0,0 +1,24 @@
+/*
+Copyright 2026 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 { CustomisationsApi } from "../../../src/modules/customisationsApi";
+import { UIComponent } from "../../../src/settings/UIFeature.ts";
+
+describe("CustomisationsApi", () => {
+    let api: CustomisationsApi;
+
+    beforeEach(() => {
+        api = new CustomisationsApi();
+    });
+
+    it("should register a shouldShowComponent callback", () => {
+        const shouldShowComponent = jest.fn().mockReturnValue(true);
+        api.registerShouldShowComponent(shouldShowComponent);
+        expect(api.shouldShowComponent(UIComponent.CreateRooms)).toBe(true);
+        expect(shouldShowComponent).toHaveBeenCalledWith("UIComponent.roomCreation");
+    });
+});