import { renderHook, act, waitFor } from '@testing-library/react'; import { usePaneLayout } from './use-pane-layout'; describe('usePaneLayout', () => { it('should return proper values', () => { const ret = renderHook(() => usePaneLayout({ id: 'testid' })); expect(ret.result.current[0]).toStrictEqual([]); expect(ret.result.current[1]).toStrictEqual(expect.any(Function)); }); it('setter should change value', async () => { const ret = renderHook(() => usePaneLayout({ id: 'testid' })); await act(() => { ret.result.current[1]([100, 50, 50]); }); await waitFor(() => { expect(ret.result.current[0]).toStrictEqual(['50%', '25%', '25%']); }); }); });