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index.test.ts
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index.test.ts
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import { effectScope, nextTick, ref } from 'vue-demi'
import { promiseTimeout } from '@vueuse/shared'
import type { Pausable } from '../utils'
import { useIntervalFn } from './index'
describe('useIntervalFn', () => {
let callback = vi.fn()
beforeEach(() => {
callback = vi.fn()
})
async function exec({ isActive, pause, resume }: Pausable) {
expect(isActive.value).toBeTruthy()
expect(callback).toHaveBeenCalledTimes(0)
await promiseTimeout(60)
expect(callback).toHaveBeenCalledTimes(1)
pause()
expect(isActive.value).toBeFalsy()
await promiseTimeout(60)
expect(callback).toHaveBeenCalledTimes(1)
resume()
expect(isActive.value).toBeTruthy()
await promiseTimeout(60)
expect(callback).toHaveBeenCalledTimes(2)
}
async function execImmediateCallback({ isActive, pause, resume }: Pausable) {
expect(isActive.value).toBeTruthy()
expect(callback).toHaveBeenCalledTimes(1)
await promiseTimeout(60)
expect(callback).toHaveBeenCalledTimes(2)
pause()
expect(isActive.value).toBeFalsy()
await promiseTimeout(60)
expect(callback).toHaveBeenCalledTimes(2)
resume()
expect(isActive.value).toBeTruthy()
expect(callback).toHaveBeenCalledTimes(3)
await promiseTimeout(60)
expect(callback).toHaveBeenCalledTimes(4)
}
it('basic pause/resume', async () => {
await exec(useIntervalFn(callback, 50))
callback = vi.fn()
const interval = ref(50)
await exec(useIntervalFn(callback, interval))
callback.mockClear()
interval.value = 20
await promiseTimeout(30)
expect(callback).toHaveBeenCalledTimes(1)
})
it('pause/resume with immediateCallback', async () => {
await execImmediateCallback(useIntervalFn(callback, 50, { immediateCallback: true }))
callback = vi.fn()
const interval = ref(50)
await execImmediateCallback(useIntervalFn(callback, interval, { immediateCallback: true }))
callback.mockClear()
interval.value = 20
await nextTick()
expect(callback).toHaveBeenCalledTimes(1)
})
it('pause/resume in scope', async () => {
const scope = effectScope()
await scope.run(async () => {
await exec(useIntervalFn(callback, 50))
})
callback.mockClear()
await scope.stop()
await promiseTimeout(60)
expect(callback).toHaveBeenCalledTimes(0)
})
it('cant work when interval is negative', async () => {
const { isActive } = useIntervalFn(callback, -1)
expect(isActive.value).toBeFalsy()
await promiseTimeout(60)
expect(callback).toHaveBeenCalledTimes(0)
})
})