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test(preact-query/ssr): add test for 'useMutationState' returning empty array #10149

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test(preact-query/ssr): add test for 'useMutationState' returning empty array #10149

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19 changes: 19 additions & 0 deletions packages/preact-query/src/__tests__/ssr.test.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@ import {
QueryClient,
QueryClientProvider,
useInfiniteQuery,
useMutationState,
useQuery,
} from '..'
import { setIsServer } from './utils'
Expand Down Expand Up @@ -136,6 +137,24 @@ describe('Server Side Rendering', () => {
queryCache.clear()
})

it('useMutationState should return empty array', () => {
function Page() {
const mutationState = useMutationState()

return <div>{`mutationState: ${mutationState.length}`}</div>
}

const markup = renderToString(
<QueryClientProvider client={queryClient}>
<Page />
</QueryClientProvider>,
)

expect(markup).toContain('mutationState: 0')

queryCache.clear()
})

it('useInfiniteQuery should return the correct state', async () => {
const key = queryKey()
const queryFn = vi.fn(() => sleep(10).then(() => 'page 1'))
Expand Down
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