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add test for mutate with async function #739

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merged 1 commit into from
Oct 31, 2020
Merged

add test for mutate with async function #739

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31 changes: 28 additions & 3 deletions test/use-swr.test.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -1412,9 +1412,9 @@ describe('useSWR - local mutation', () => {
)
})

it('should support async mutation', async () => {
it('should support async mutation with promise', async () => {
function Page() {
const { data } = useSWR('mutate-1', () => 0, {
const { data } = useSWR('mutate-promise', () => 0, {
dedupingInterval: 0
})
return <div>data: {data}</div>
Expand All @@ -1428,7 +1428,7 @@ describe('useSWR - local mutation', () => {
await act(() => {
// mutate and revalidate
return mutate(
'mutate-1',
'mutate-promise',
new Promise(res => setTimeout(() => res(999), 100)),
false
)
Expand All @@ -1437,6 +1437,31 @@ describe('useSWR - local mutation', () => {
expect(container.textContent).toMatchInlineSnapshot(`"data: 999"`)
})

it('should support async mutation with async function', async () => {
function Page() {
const { data } = useSWR('mutate-async-fn', () => 0, {
dedupingInterval: 0
})
return <div>data: {data}</div>
}
const { container } = render(<Page />)

// hydration
expect(container.textContent).toMatchInlineSnapshot(`"data: "`)
await waitForDomChange({ container }) // mount
expect(container.textContent).toMatchInlineSnapshot(`"data: 0"`)
await act(() => {
// mutate and revalidate
return mutate(
'mutate-async-fn',
async () => new Promise(res => setTimeout(() => res(999), 100)),
false
)
})
await act(() => new Promise(res => setTimeout(res, 110)))
expect(container.textContent).toMatchInlineSnapshot(`"data: 999"`)
})

it('should trigger on mutation without data', async () => {
let value = 0

Expand Down