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))
+}