checkout/__test__/retry-helper.test.ts

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import * as core from '@actions/core'
import {RetryHelper} from '../lib/retry-helper'
let info: string[]
let retryHelper: any
describe('retry-helper tests', () => {
beforeAll(() => {
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// Mock @actions/core info()
jest.spyOn(core, 'info').mockImplementation((message: string) => {
info.push(message)
})
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retryHelper = new RetryHelper(3, 0, 0)
})
beforeEach(() => {
// Reset info
info = []
})
afterAll(() => {
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// Restore
jest.restoreAllMocks()
})
it('first attempt succeeds', async () => {
const actual = await retryHelper.execute(async () => {
return 'some result'
})
expect(actual).toBe('some result')
expect(info).toHaveLength(0)
})
it('second attempt succeeds', async () => {
let attempts = 0
const actual = await retryHelper.execute(() => {
if (++attempts == 1) {
throw new Error('some error')
}
return Promise.resolve('some result')
})
expect(attempts).toBe(2)
expect(actual).toBe('some result')
expect(info).toHaveLength(2)
expect(info[0]).toBe('some error')
expect(info[1]).toMatch(/Waiting .+ seconds before trying again/)
})
it('third attempt succeeds', async () => {
let attempts = 0
const actual = await retryHelper.execute(() => {
if (++attempts < 3) {
throw new Error(`some error ${attempts}`)
}
return Promise.resolve('some result')
})
expect(attempts).toBe(3)
expect(actual).toBe('some result')
expect(info).toHaveLength(4)
expect(info[0]).toBe('some error 1')
expect(info[1]).toMatch(/Waiting .+ seconds before trying again/)
expect(info[2]).toBe('some error 2')
expect(info[3]).toMatch(/Waiting .+ seconds before trying again/)
})
it('all attempts fail succeeds', async () => {
let attempts = 0
let error: Error = (null as unknown) as Error
try {
await retryHelper.execute(() => {
throw new Error(`some error ${++attempts}`)
})
} catch (err) {
error = err as Error
}
expect(error.message).toBe('some error 3')
expect(attempts).toBe(3)
expect(info).toHaveLength(4)
expect(info[0]).toBe('some error 1')
expect(info[1]).toMatch(/Waiting .+ seconds before trying again/)
expect(info[2]).toBe('some error 2')
expect(info[3]).toMatch(/Waiting .+ seconds before trying again/)
})
})