import { describe, it, beforeEach, expect, vi } from 'vitest'
import Timer from '../../src/utils/Timer.js'
vi.useFakeTimers()
* to enfored time advancements after an initial timeout callback
* has been triggered we need to force the eventloop to tick once
*/
const tick = async () => new Promise<void>((resolve) => resolve())
const triggerDelay = async (times = 4, interval = 10) => {
for (let i = 0; i < times; ++i) {
vi.advanceTimersByTime(interval)
await tick()
}
}
describe('timer', () => {
const processEmitSpy = vi.spyOn(process, 'emit')
describe('promise', () => {
it('should be rejected by timeout', async () => {
const timer = new Timer(20, 30, () => Promise.resolve(false))
await triggerDelay()
await expect(timer).rejects.toMatchObject(new Error('timeout') as unknown as Record<string, unknown>)
expect(processEmitSpy).not.toBeCalled()
})
it('should be fulfilled when resolved with true value', async () => {
const timer = new Timer(20, 30, () => Promise.resolve(true))
await triggerDelay()
await expect(timer).resolves
expect(processEmitSpy).not.toBeCalled()
})
it('should not be fulfilled when resolved with false value', async () => {
const timer = new Timer(20, 30, () => Promise.resolve(false))
await triggerDelay()
await expect(timer).rejects.toMatchObject(new Error('timeout') as unknown as Record<string, unknown>)
expect(processEmitSpy).not.toBeCalled()
})
it('should be rejected', async () => {
const timer = new Timer(20, 30, () => Promise.reject(new Error('err')))
await triggerDelay()
await expect(timer).rejects.toMatchObject(new Error('err') as unknown as Record<string, unknown>)
})
it('should be rejected without promise', async () => {
const timer = new Timer(20, 30, () => 0)
await triggerDelay()
await expect(timer).rejects.toMatchObject(new Error('timeout') as unknown as Record<string, unknown>)
})
it('should be fulfilled without promise', async () => {
const timer = new Timer(20, 30, () => 'foobar')
await triggerDelay()
expect(await timer).toBe('foobar')
})
})
it('should execute condition at least once', async () => {
let wasExecuted = false
const timer = new Timer(100, 200, () => new Promise((resolve) =>
setTimeout(() => {
wasExecuted = true
resolve(true)
}, 500)
))
await triggerDelay(6, 100)
await expect(timer).resolves
await expect(wasExecuted).toBeTruthy
})
beforeEach(() => {
processEmitSpy.mockClear()
})
})
