element-web-Github/test/components/views/elements/ProgressBar-test.tsx
David Langley 491f0cd08a
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2024-09-09 13:57:16 +00:00

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TypeScript

/*
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
Please see LICENSE files in the repository root for full details.
*/
import React from "react";
import { act, render } from "@testing-library/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);
});
});