chore(refactor): split up and add tests for core functionality

src/auth/spec/getTokens.spec.ts

@@ -0,0 +1,79 @@
+import { AuthConfig } from '@sasjs/utils'
+import * as refreshTokensModule from '../refreshTokens'
+import { generateToken, mockAuthResponse } from './mockResponses'
+import { getTokens } from '../getTokens'
+import { RequestClient } from '../../request/RequestClient'
+
+const requestClient = new (<jest.Mock<RequestClient>>RequestClient)()
+
+describe('getTokens', () => {
+  it('should attempt to refresh tokens if the access token is expiring', async () => {
+    setupMocks()
+    const access_token = generateToken(30)
+    const refresh_token = generateToken(86400000)
+    const authConfig: AuthConfig = {
+      access_token,
+      refresh_token,
+      client: 'cl13nt',
+      secret: 's3cr3t'
+    }
+
+    await getTokens(requestClient, authConfig)
+
+    expect(refreshTokensModule.refreshTokens).toHaveBeenCalledWith(
+      requestClient,
+      authConfig.client,
+      authConfig.secret,
+      authConfig.refresh_token
+    )
+  })
+
+  it('should attempt to refresh tokens if the refresh token is expiring', async () => {
+    setupMocks()
+    const access_token = generateToken(86400000)
+    const refresh_token = generateToken(30)
+    const authConfig: AuthConfig = {
+      access_token,
+      refresh_token,
+      client: 'cl13nt',
+      secret: 's3cr3t'
+    }
+
+    await getTokens(requestClient, authConfig)
+
+    expect(refreshTokensModule.refreshTokens).toHaveBeenCalledWith(
+      requestClient,
+      authConfig.client,
+      authConfig.secret,
+      authConfig.refresh_token
+    )
+  })
+
+  it('should throw an error if the refresh token has already expired', async () => {
+    setupMocks()
+    const access_token = generateToken(86400000)
+    const refresh_token = generateToken(-36000)
+    const authConfig: AuthConfig = {
+      access_token,
+      refresh_token,
+      client: 'cl13nt',
+      secret: 's3cr3t'
+    }
+    const expectedError =
+      'Unable to obtain new access token. Your refresh token has expired.'
+
+    const error = await getTokens(requestClient, authConfig).catch((e) => e)
+
+    expect(error.message).toEqual(expectedError)
+  })
+})
+
+const setupMocks = () => {
+  jest.restoreAllMocks()
+  jest.mock('../../request/RequestClient')
+  jest.mock('../refreshTokens')
+
+  jest
+    .spyOn(refreshTokensModule, 'refreshTokens')
+    .mockImplementation(() => Promise.resolve(mockAuthResponse))
+}

src/auth/spec/mockResponses.ts

@@ -1,2 +1,24 @@
+import { SasAuthResponse } from '@sasjs/utils/types'
+
 export const mockLoginAuthoriseRequiredResponse = `<form id="application_authorization" action="/SASLogon/oauth/authorize" method="POST"><input type="hidden" name="X-Uaa-Csrf" value="2nfuxIn6WaOURWL7tzTXCe"/>`
 export const mockLoginSuccessResponse = `You have signed in`
+
+export const mockAuthResponse: SasAuthResponse = {
+  access_token: 'acc355',
+  refresh_token: 'r3fr35h',
+  id_token: 'id',
+  token_type: 'bearer',
+  expires_in: new Date().valueOf(),
+  scope: 'default',
+  jti: 'test'
+}
+
+export const generateToken = (timeToLiveSeconds: number): string => {
+  const exp =
+    new Date(new Date().getTime() + timeToLiveSeconds * 1000).getTime() / 1000
+  const header = 'eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9'
+  const payload = Buffer.from(JSON.stringify({ exp })).toString('base64')
+  const signature = '4-iaDojEVl0pJQMjrbM1EzUIfAZgsbK_kgnVyVxFSVo'
+  const token = `${header}.${payload}.${signature}`
+  return token
+}

src/auth/spec/refreshTokens.spec.ts

@@ -0,0 +1,75 @@
+import { AuthConfig } from '@sasjs/utils'
+import * as NodeFormData from 'form-data'
+import { generateToken, mockAuthResponse } from './mockResponses'
+import { RequestClient } from '../../request/RequestClient'
+import { refreshTokens } from '../refreshTokens'
+
+const requestClient = new (<jest.Mock<RequestClient>>RequestClient)()
+
+describe('refreshTokens', () => {
+  it('should attempt to refresh tokens', async () => {
+    setupMocks()
+    const access_token = generateToken(30)
+    const refresh_token = generateToken(30)
+    const authConfig: AuthConfig = {
+      access_token,
+      refresh_token,
+      client: 'cl13nt',
+      secret: 's3cr3t'
+    }
+    jest
+      .spyOn(requestClient, 'post')
+      .mockImplementation(() =>
+        Promise.resolve({ result: mockAuthResponse, etag: '' })
+      )
+    const token = Buffer.from(
+      authConfig.client + ':' + authConfig.secret
+    ).toString('base64')
+
+    await refreshTokens(
+      requestClient,
+      authConfig.client,
+      authConfig.secret,
+      authConfig.refresh_token
+    )
+
+    expect(requestClient.post).toHaveBeenCalledWith(
+      '/SASLogon/oauth/token',
+      expect.any(NodeFormData),
+      undefined,
+      expect.stringContaining('multipart/form-data; boundary='),
+      {
+        Authorization: 'Basic ' + token
+      }
+    )
+  })
+
+  it('should handle errors while refreshing tokens', async () => {
+    setupMocks()
+    const access_token = generateToken(30)
+    const refresh_token = generateToken(30)
+    const authConfig: AuthConfig = {
+      access_token,
+      refresh_token,
+      client: 'cl13nt',
+      secret: 's3cr3t'
+    }
+    jest
+      .spyOn(requestClient, 'post')
+      .mockImplementation(() => Promise.reject('Token Error'))
+
+    const error = await refreshTokens(
+      requestClient,
+      authConfig.client,
+      authConfig.secret,
+      authConfig.refresh_token
+    ).catch((e) => e)
+
+    expect(error).toContain('Error while refreshing tokens')
+  })
+})
+
+const setupMocks = () => {
+  jest.restoreAllMocks()
+  jest.mock('../../request/RequestClient')
+}