import { Component, Suspense, useCallback, useContext } from 'react'import type { ReactNode } from 'react'import { fireEvent, render } from '@testing-library/react'import { atom, SECRET_INTERNAL_getScopeContext as getScopeContext, useAtom, useSetAtom,} from 'jotai'import { atomWithInfiniteQuery } from 'jotai/query'import { getTestProvider } from '../testUtils'import fakeFetch from './fakeFetch'
const Provider = getTestProvider()
const useRetryFromError = (scope?: symbol | string | number) => { const ScopeContext = getScopeContext(scope) const { r: retryFromError } = useContext(ScopeContext) return retryFromError || ((fn) => fn())}
it('infinite query basic test', async () => { const countAtom = atomWithInfiniteQuery< { response: { count: number } }, void >(() => ({ queryKey: ['count1Infinite'], queryFn: async (context) => { const count = context.pageParam ? parseInt(context.pageParam) : 0 return fakeFetch({ count }, false, 100) }, }))
const Counter = () => { const [data] = useAtom(countAtom) return ( <> <div>page count: {data.pages.length}</div> </> ) }
const { findByText } = render( <Provider> <Suspense fallback="loading"> <Counter /> </Suspense> </Provider> )
await findByText('loading') await findByText('page count: 1')})
it('infinite query next page test', async () => { const mockFetch = jest.fn(fakeFetch) const countAtom = atomWithInfiniteQuery< { response: { count: number } }, void >(() => ({ queryKey: ['nextPageAtom'], queryFn: (context) => { const count = context.pageParam ? parseInt(context.pageParam) : 0 return mockFetch({ count }, false, 100) }, getNextPageParam: (lastPage) => { const { response: { count }, } = lastPage return (count + 1).toString() }, getPreviousPageParam: (lastPage) => { const { response: { count }, } = lastPage return (count - 1).toString() }, })) const Counter = () => { const [data, dispatch] = useAtom(countAtom)
return ( <> <div>page count: {data.pages.length}</div> <button onClick={() => dispatch({ type: 'fetchNextPage' })}> next </button> <button onClick={() => dispatch({ type: 'fetchPreviousPage' })}> prev </button> </> ) }
const { findByText, getByText } = render( <Provider> <Suspense fallback="loading"> <Counter /> </Suspense> </Provider> )
await findByText('loading') await findByText('page count: 1') expect(mockFetch).toBeCalledTimes(1)
await new Promise((r) => setTimeout(r, 100)) fireEvent.click(getByText('next')) await findByText('page count: 2') expect(mockFetch).toBeCalledTimes(2)
await new Promise((r) => setTimeout(r, 100)) fireEvent.click(getByText('prev')) await findByText('page count: 3') expect(mockFetch).toBeCalledTimes(3)})
it('infinite query with enabled', async () => { const slugAtom = atom<string | null>(null)
const slugQueryAtom = atomWithInfiniteQuery((get) => { const slug = get(slugAtom) return { enabled: !!slug, queryKey: ['disabled_until_value', slug], queryFn: async () => { return await fakeFetch({ slug: `hello-${slug}` }, false, 100) }, } })
const Slug = () => { const [data] = useAtom(slugQueryAtom) if (!data?.pages?.[0]?.response.slug) return <div>not enabled</div> return <div>slug: {data?.pages?.[0]?.response?.slug}</div> }
const Parent = () => { const [, setSlug] = useAtom(slugAtom) return ( <div> <button onClick={() => { setSlug('world') }}> set slug </button> <Slug /> </div> ) }
const { getByText, findByText } = render( <Provider> <Suspense fallback="loading"> <Parent /> </Suspense> </Provider> )
await findByText('not enabled')
await new Promise((r) => setTimeout(r, 100)) fireEvent.click(getByText('set slug')) await findByText('loading') await findByText('slug: hello-world')})
it('infinite query with enabled 2', async () => { const enabledAtom = atom<boolean>(true) const slugAtom = atom<string | null>('first')
const slugQueryAtom = atomWithInfiniteQuery((get) => { const slug = get(slugAtom) const isEnabled = get(enabledAtom) return { enabled: isEnabled, queryKey: ['enabled_toggle'], queryFn: async () => { return await fakeFetch({ slug: `hello-${slug}` }, false, 100) }, } })
const Slug = () => { const [data] = useAtom(slugQueryAtom) if (!data?.pages?.[0]?.response?.slug) return <div>not enabled</div> return <div>slug: {data?.pages?.[0]?.response?.slug}</div> }
const Parent = () => { const [, setSlug] = useAtom(slugAtom) const [, setEnabled] = useAtom(enabledAtom) return ( <div> <button onClick={() => { setSlug('world') }}> set slug </button> <button onClick={() => { setEnabled(true) }}> set enabled </button> <button onClick={() => { setEnabled(false) }}> set disabled </button> <Slug /> </div> ) }
const { getByText, findByText } = render( <Provider> <Suspense fallback="loading"> <Parent /> </Suspense> </Provider> )
await findByText('loading') await findByText('slug: hello-first')
await new Promise((r) => setTimeout(r, 100)) fireEvent.click(getByText('set disabled')) fireEvent.click(getByText('set slug')) await findByText('slug: hello-first')
await new Promise((r) => setTimeout(r, 100)) fireEvent.click(getByText('set enabled')) await findByText('slug: hello-world')})
it('should be able to refetch only specific pages when refetchPages is provided', async () => { const key = ['refetch_given_page'] const states: any[] = []
let multiplier = 1 const anAtom = atomWithInfiniteQuery<number, void>(() => { return { queryKey: key, queryFn: ({ pageParam = 10 }) => Number(pageParam) * multiplier, getNextPageParam: (lastPage) => lastPage + 1, onSuccess: (data) => states.push(data), } })
function Page() { const [state, setState] = useAtom(anAtom)
const fetchNextPage = useCallback( () => setState({ type: 'fetchNextPage' }), [setState] )
const refetchPage = useCallback( (value: number) => { multiplier = 2 setState({ type: 'refetch', payload: { refetchPage: (_, index) => index === value, }, }) }, [setState] )
return ( <> <div>length: {state.pages.length}</div> <div>page 1: {state.pages[0] || null}</div> <div>page 2: {state.pages[1] || null}</div> <div>page 3: {state.pages[2] || null}</div> <button onClick={fetchNextPage}>fetch next page</button> <button onClick={() => refetchPage(0)}>refetch page 1</button> </> ) }
const { getByText, findByText } = render( <Provider> <Suspense fallback="loading"> <Page /> </Suspense> </Provider> )
await findByText('loading')
await findByText('length: 1') await findByText('page 1: 10')
await new Promise((r) => setTimeout(r, 100)) fireEvent.click(getByText('fetch next page')) await findByText('length: 2') await findByText('page 2: 11')
await new Promise((r) => setTimeout(r, 100)) fireEvent.click(getByText('fetch next page')) await findByText('length: 3') await findByText('page 3: 12')
await new Promise((r) => setTimeout(r, 100)) fireEvent.click(getByText('refetch page 1')) await findByText('length: 3') await findByText('page 1: 20')})
describe('error handling', () => { class ErrorBoundary extends Component< { message?: string; retry?: () => void; children: ReactNode }, { hasError: boolean } > { constructor(props: { message?: string; children: ReactNode }) { super(props) this.state = { hasError: false } } static getDerivedStateFromError() { return { hasError: true } } render() { return this.state.hasError ? ( <div> {this.props.message || 'errored'} {this.props.retry && ( <button onClick={() => { this.props.retry?.() this.setState({ hasError: false }) }}> retry </button> )} </div> ) : ( this.props.children ) } }
it('can catch error in error boundary', async () => { const countAtom = atomWithInfiniteQuery(() => ({ queryKey: ['error test', 'count1Infinite'], retry: false, queryFn: async () => { return await fakeFetch({ count: 0 }, true, 100) }, })) const Counter = () => { const [{ pages }] = useAtom(countAtom) return ( <> <div>count: {pages[0]?.response.count}</div> </> ) }
const { findByText } = render( <Provider> <ErrorBoundary> <Suspense fallback="loading"> <Counter /> </Suspense> </ErrorBoundary> </Provider> )
await findByText('loading') await findByText('errored') })
it('can recover from error', async () => { let count = 0 let willThrowError = true const countAtom = atomWithInfiniteQuery< { response: { count: number } }, void >(() => ({ queryKey: ['error test', 'count2Infinite'], retry: false, staleTime: 200, queryFn: () => { const promise = fakeFetch({ count }, willThrowError, 100) willThrowError = !willThrowError ++count return promise }, })) const Counter = () => { const [{ pages }, dispatch] = useAtom(countAtom) const refetch = () => dispatch({ type: 'refetch', payload: {} }) return ( <> <div>count: {pages[0]?.response.count}</div> <button onClick={refetch}>refetch</button> </> ) }
const App = () => { const dispatch = useSetAtom(countAtom) const retryFromError = useRetryFromError() const retry = () => { retryFromError(() => { dispatch({ type: 'refetch', payload: {} }) }) } return ( <ErrorBoundary retry={retry}> <Suspense fallback="loading"> <Counter /> </Suspense> </ErrorBoundary> ) }
const { findByText, getByText } = render( <Provider> <App /> </Provider> )
await findByText('loading') await findByText('errored')
await new Promise((r) => setTimeout(r, 100)) fireEvent.click(getByText('retry')) await findByText('loading') await findByText('count: 1')
await new Promise((r) => setTimeout(r, 100)) fireEvent.click(getByText('refetch')) await findByText('loading') await findByText('errored')
await new Promise((r) => setTimeout(r, 100)) fireEvent.click(getByText('retry')) await findByText('loading') await findByText('count: 3') })})