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

apps/web/test/unit-tests/components/views/elements/ProgressBar-test.tsx

@@ -0,0 +1,51 @@
+/*
+Copyright 2024 New Vector Ltd.
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+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 React from "react";
+import { act, render } from "jest-matrix-react";
+
+import ProgressBar from "../../../../../src/components/views/elements/ProgressBar";
+
+jest.useFakeTimers();
+
+describe("<ProgressBar/>", () => {
+    it("works when animated", () => {
+        const { container, rerender } = render(<ProgressBar max={100} value={50} animated={true} />);
+        const progress = container.querySelector<HTMLProgressElement>("progress")!;
+
+        // The animation always starts from 0
+        expect(progress.value).toBe(0);
+
+        // Await the animation to conclude to our initial value of 50
+        act(() => {
+            jest.runAllTimers();
+        });
+        expect(progress.position).toBe(0.5);
+
+        // Move the needle to 80%
+        rerender(<ProgressBar max={100} value={80} animated={true} />);
+        expect(progress.position).toBe(0.5);
+
+        // Let the animaiton run a tiny bit, assert it has moved from where it was to where it needs to go
+        act(() => {
+            jest.advanceTimersByTime(150);
+        });
+        expect(progress.position).toBeGreaterThan(0.5);
+        expect(progress.position).toBeLessThan(0.8);
+    });
+
+    it("works when not animated", () => {
+        const { container, rerender } = render(<ProgressBar max={100} value={50} animated={false} />);
+        const progress = container.querySelector<HTMLProgressElement>("progress")!;
+
+        // Without animation all positional updates are immediate, not requiring timers to run
+        expect(progress.position).toBe(0.5);
+        rerender(<ProgressBar max={100} value={80} animated={false} />);
+        expect(progress.position).toBe(0.8);
+    });
+});