vue3-yuanma/packages/scheduler/__tests__/scheduler.spec.ts
2018-09-20 11:43:14 -04:00

98 lines
2.1 KiB
TypeScript

import { queueJob, nextTick } from '../src/index'
describe('scheduler', () => {
it('queueJob', async () => {
const calls: any = []
const job1 = () => {
calls.push('job1')
}
const job2 = () => {
calls.push('job2')
}
queueJob(job1)
queueJob(job2)
expect(calls).toEqual([])
await nextTick()
expect(calls).toEqual(['job1', 'job2'])
})
it('queueJob while already flushing', async () => {
const calls: any = []
const job1 = () => {
calls.push('job1')
// job1 queues job2
queueJob(job2)
// should be called sync
expect(calls).toEqual(['job1', 'job2'])
}
const job2 = () => {
calls.push('job2')
}
queueJob(job1)
expect(calls).toEqual([])
await nextTick()
expect(calls).toEqual(['job1', 'job2'])
})
it('queueJob w/ postFlushCb', async () => {
const calls: any = []
const job1 = () => {
calls.push('job1')
}
const job2 = () => {
calls.push('job2')
}
const cb1 = () => {
calls.push('cb1')
}
const cb2 = () => {
calls.push('cb2')
}
queueJob(job1, cb1)
queueJob(job2, cb2)
await nextTick()
expect(calls).toEqual(['job1', 'job2', 'cb1', 'cb2'])
})
it('queueJob w/ postFlushCb while flushing', async () => {
const calls: any = []
const job1 = () => {
calls.push('job1')
// job1 queues job2
queueJob(job2, cb2)
// should be called sync
expect(calls).toEqual(['job1', 'job2'])
}
const job2 = () => {
calls.push('job2')
}
const cb1 = () => {
calls.push('cb1')
}
const cb2 = () => {
calls.push('cb2')
}
queueJob(job1, cb1)
expect(calls).toEqual([])
await nextTick()
expect(calls).toEqual(['job1', 'job2', 'cb1', 'cb2'])
})
it('should dedupe queued tasks', async () => {
const calls: any = []
const job1 = () => {
calls.push('job1')
}
const job2 = () => {
calls.push('job2')
}
queueJob(job1)
queueJob(job2)
queueJob(job1)
queueJob(job2)
expect(calls).toEqual([])
await nextTick()
expect(calls).toEqual(['job1', 'job2'])
})
})