element-web/test/unit-tests/hooks/useWindowWidth-test.ts

36 lines
1.0 KiB
TypeScript

/*
Copyright 2024 New Vector Ltd.
Copyright 2024 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 { renderHook, act } from "jest-matrix-react";
import UIStore, { UI_EVENTS } from "../../../src/stores/UIStore";
import { useWindowWidth } from "../../../src/hooks/useWindowWidth";
describe("useWindowWidth", () => {
beforeEach(() => {
UIStore.instance.windowWidth = 768;
});
it("should return the current width of window, according to UIStore", () => {
const { result } = renderHook(() => useWindowWidth());
expect(result.current).toBe(768);
});
it("should update the value when UIStore's value changes", () => {
const { result } = renderHook(() => useWindowWidth());
act(() => {
UIStore.instance.windowWidth = 1024;
UIStore.instance.emit(UI_EVENTS.Resize);
});
expect(result.current).toBe(1024);
});
});