let asyncAct jest.mock('react', () => { return { ...jest.requireActual('react'), act: cb => { return cb() }, } }) beforeEach(() => { jest.resetModules() asyncAct = require('../act-compat').default jest.spyOn(console, 'error').mockImplementation(() => {}) }) afterEach(() => { jest.restoreAllMocks() }) test('async act works when it does not exist (older versions of react)', async () => { const callback = jest.fn() await asyncAct(async () => { await Promise.resolve() await callback() }) expect(console.error).toHaveBeenCalledTimes(0) expect(callback).toHaveBeenCalledTimes(1) callback.mockClear() console.error.mockClear() await asyncAct(async () => { await Promise.resolve() await callback() }) expect(console.error).toHaveBeenCalledTimes(0) expect(callback).toHaveBeenCalledTimes(1) }) test('async act recovers from errors', async () => { try { await asyncAct(async () => { await null throw new Error('test error') }) } catch (err) { console.error('call console.error') } expect(console.error).toHaveBeenCalledTimes(1) expect(console.error.mock.calls).toMatchInlineSnapshot(` [ [ call console.error, ], ] `) }) test('async act recovers from sync errors', async () => { try { await asyncAct(() => { throw new Error('test error') }) } catch (err) { console.error('call console.error') } expect(console.error).toHaveBeenCalledTimes(1) expect(console.error.mock.calls).toMatchInlineSnapshot(` [ [ call console.error, ], ] `) }) /* eslint no-console:0 */