checkout/__test__/retry-helper.test.ts

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const mockCore = jest.genMockFromModule('@actions/core') as any
mockCore.info = (message: string) => {
info.push(message)
}
let info: string[]
let retryHelper: any
describe('retry-helper tests', () => {
beforeAll(() => {
// Mocks
jest.setMock('@actions/core', mockCore)
// Now import
const retryHelperModule = require('../lib/retry-helper')
retryHelper = new retryHelperModule.RetryHelper(3, 0, 0)
})
beforeEach(() => {
// Reset info
info = []
})
afterAll(() => {
// Reset modules
jest.resetModules()
})
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
}
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/)
})
})