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Merged
merged 3 commits into from
Jul 30, 2021
Merged

Reset cache between tests #1309

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27fbd58
Reset cache between test
huozhi Jul 22, 2021
be9c82b
apply feedbacks
huozhi Jul 29, 2021
6fbb303
Merge branch 'master' into clear-cache
shuding Jul 30, 2021
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5 changes: 3 additions & 2 deletions jest.config.js
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,8 @@ module.exports = {
},
globals: {
'ts-jest': {
tsconfig: 'test/tsconfig.json'
tsconfig: 'test/tsconfig.json',
diagnostics: false,
}
}
},
}
46 changes: 27 additions & 19 deletions test/use-swr-cache.test.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,12 @@ import useSWR, { createCache, SWRConfig } from 'swr'
import { sleep, createKey, nextTick, focusOn } from './utils'

describe('useSWR - cache', () => {
let provider

beforeEach(() => {
provider = new Map()
})

it('should be able to update the cache', async () => {
const fetcher = _key => 'res:' + _key
const keys = [createKey(), createKey()]
Expand All @@ -15,21 +21,20 @@ describe('useSWR - cache', () => {
return <div onClick={() => setIndex(1)}>{data}</div>
}

const customCache = new Map()
const { cache } = createCache(customCache)
const { cache } = createCache(provider)
const { container } = render(
<SWRConfig value={{ cache }}>
<Section />
</SWRConfig>
)
await screen.findByText(fetcher(keys[0]))

expect(customCache.get(keys[1])).toBe(undefined)
expect(provider.get(keys[1])).toBe(undefined)
fireEvent.click(container.firstElementChild)
await act(() => sleep(10))

expect(customCache.get(keys[0])).toBe(fetcher(keys[0]))
expect(customCache.get(keys[1])).toBe(fetcher(keys[1]))
expect(provider.get(keys[0])).toBe(fetcher(keys[0]))
expect(provider.get(keys[1])).toBe(fetcher(keys[1]))
})

it('should be able to read from the initial cache with updates', async () => {
Expand All @@ -44,8 +49,8 @@ describe('useSWR - cache', () => {
return <div>{data}</div>
}

const customCache = new Map([[key, 'cached value']])
const { cache } = createCache(customCache)
provider = new Map([[key, 'cached value']])
const { cache } = createCache(provider)
render(
<SWRConfig value={{ cache }}>
<Page />
Expand All @@ -64,8 +69,8 @@ describe('useSWR - cache', () => {
return <div>{data}</div>
}

const customCache = new Map([[key, 'cached value']])
const { cache, mutate } = createCache(customCache)
provider = new Map([[key, 'cached value']])
const { cache, mutate } = createCache(provider)
render(
<SWRConfig value={{ cache }}>
<Page />
Expand All @@ -78,10 +83,10 @@ describe('useSWR - cache', () => {

it('should support multi-level cache', async () => {
const key = createKey()
const customCache1 = new Map([[key, '1']])
const { cache: cache1 } = createCache(customCache1)
const customCache2 = new Map([[key, '2']])
const { cache: cache2 } = createCache(customCache2)
const provider1 = new Map([[key, '1']])
const { cache: cache1 } = createCache(provider1)
const provider2 = new Map([[key, '2']])
const { cache: cache2 } = createCache(provider2)

// Nested components with the same cache key can get different values.
function Foo() {
Expand Down Expand Up @@ -110,10 +115,10 @@ describe('useSWR - cache', () => {

it('should support isolated cache', async () => {
const key = createKey()
const customCache1 = new Map([[key, '1']])
const { cache: cache1 } = createCache(customCache1)
const customCache2 = new Map([[key, '2']])
const { cache: cache2 } = createCache(customCache2)
const provider1 = new Map([[key, '1']])
const { cache: cache1 } = createCache(provider1)
const provider2 = new Map([[key, '2']])
const { cache: cache2 } = createCache(provider2)

// Nested components with the same cache key can get different values.
function Foo() {
Expand All @@ -140,7 +145,7 @@ describe('useSWR - cache', () => {

it('should honor createCache provider options', async () => {
const key = createKey()
const provider = new Map([[key, 0]])
provider = new Map([[key, 0]])
const { cache } = createCache(provider, {
setupOnFocus() {
/* do nothing */
Expand Down Expand Up @@ -177,7 +182,6 @@ describe('useSWR - cache', () => {

it('should work with revalidateOnFocus', async () => {
const key = createKey()
const provider = new Map()
const { cache } = createCache(provider)
let value = 0
function Foo() {
Expand All @@ -201,4 +205,8 @@ describe('useSWR - cache', () => {
await focusOn(window)
screen.getByText('1')
})

it('should clear cache between tests', async () => {
expect(provider.size).toBe(0)
})
})