deno.land / x / jotai@v1.8.4 / tests / redux / atomWithStore.test.tsx

atomWithStore.test.tsx
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import { StrictMode } from 'react'import { act, fireEvent, render } from '@testing-library/react'import { legacy_createStore as createStore } from 'redux'import { useAtom } from 'jotai'import { atomWithStore } from 'jotai/redux'import { getTestProvider } from '../testUtils'
const Provider = getTestProvider()
it('count state', async () => { const initialState = { count: 0 } const reducer = (state = initialState, action: { type: 'INC' }) => { if (action.type === 'INC') { return { ...state, count: state.count + 1 } } return state } const store = createStore(reducer) const storeAtom = atomWithStore(store) store.dispatch({ type: 'INC' })
const Counter = () => { const [state, dispatch] = useAtom(storeAtom)
return ( <> count: {state.count} <button onClick={() => dispatch({ type: 'INC' })}>button</button> </> ) }
const { findByText, getByText } = render( <StrictMode> <Provider> <Counter /> </Provider> </StrictMode> )
await findByText('count: 1')
fireEvent.click(getByText('button')) await findByText('count: 2') expect(store.getState().count).toBe(2)
act(() => { store.dispatch({ type: 'INC' }) }) await findByText('count: 3') expect(store.getState().count).toBe(3)})
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a year ago