more unit tests and corresponding refactoring (#174)

__test__/git-auth-helper.test.ts

@@ -0,0 +1,200 @@
+import * as core from '@actions/core'
+import * as fs from 'fs'
+import * as gitAuthHelper from '../lib/git-auth-helper'
+import * as io from '@actions/io'
+import * as path from 'path'
+import {IGitCommandManager} from '../lib/git-command-manager'
+import {IGitSourceSettings} from '../lib/git-source-settings'
+
+const testWorkspace = path.join(__dirname, '_temp', 'git-auth-helper')
+const originalRunnerTemp = process.env['RUNNER_TEMP']
+let workspace: string
+let gitConfigPath: string
+let runnerTemp: string
+let git: IGitCommandManager
+let settings: IGitSourceSettings
+
+describe('git-auth-helper tests', () => {
+  beforeAll(async () => {
+    // Clear test workspace
+    await io.rmRF(testWorkspace)
+  })
+
+  beforeEach(() => {
+    // Mock setSecret
+    jest.spyOn(core, 'setSecret').mockImplementation((secret: string) => {})
+  })
+
+  afterEach(() => {
+    // Unregister mocks
+    jest.restoreAllMocks()
+  })
+
+  afterAll(() => {
+    // Restore RUNNER_TEMP
+    delete process.env['RUNNER_TEMP']
+    if (originalRunnerTemp) {
+      process.env['RUNNER_TEMP'] = originalRunnerTemp
+    }
+  })
+
+  const configuresAuthHeader = 'configures auth header'
+  it(configuresAuthHeader, async () => {
+    // Arrange
+    await setup(configuresAuthHeader)
+    expect(settings.authToken).toBeTruthy() // sanity check
+    const authHelper = gitAuthHelper.createAuthHelper(git, settings)
+
+    // Act
+    await authHelper.configureAuth()
+
+    // Assert config
+    const configContent = (await fs.promises.readFile(gitConfigPath)).toString()
+    const basicCredential = Buffer.from(
+      `x-access-token:${settings.authToken}`,
+      'utf8'
+    ).toString('base64')
+    expect(
+      configContent.indexOf(
+        `http.https://github.com/.extraheader AUTHORIZATION: basic ${basicCredential}`
+      )
+    ).toBeGreaterThanOrEqual(0)
+  })
+
+  const configuresAuthHeaderEvenWhenPersistCredentialsFalse =
+    'configures auth header even when persist credentials false'
+  it(configuresAuthHeaderEvenWhenPersistCredentialsFalse, async () => {
+    // Arrange
+    await setup(configuresAuthHeaderEvenWhenPersistCredentialsFalse)
+    expect(settings.authToken).toBeTruthy() // sanity check
+    settings.persistCredentials = false
+    const authHelper = gitAuthHelper.createAuthHelper(git, settings)
+
+    // Act
+    await authHelper.configureAuth()
+
+    // Assert config
+    const configContent = (await fs.promises.readFile(gitConfigPath)).toString()
+    expect(
+      configContent.indexOf(
+        `http.https://github.com/.extraheader AUTHORIZATION`
+      )
+    ).toBeGreaterThanOrEqual(0)
+  })
+
+  const registersBasicCredentialAsSecret =
+    'registers basic credential as secret'
+  it(registersBasicCredentialAsSecret, async () => {
+    // Arrange
+    await setup(registersBasicCredentialAsSecret)
+    expect(settings.authToken).toBeTruthy() // sanity check
+    const authHelper = gitAuthHelper.createAuthHelper(git, settings)
+
+    // Act
+    await authHelper.configureAuth()
+
+    // Assert secret
+    const setSecretSpy = core.setSecret as jest.Mock<any, any>
+    expect(setSecretSpy).toHaveBeenCalledTimes(1)
+    const expectedSecret = Buffer.from(
+      `x-access-token:${settings.authToken}`,
+      'utf8'
+    ).toString('base64')
+    expect(setSecretSpy).toHaveBeenCalledWith(expectedSecret)
+  })
+
+  const removesToken = 'removes token'
+  it(removesToken, async () => {
+    // Arrange
+    await setup(removesToken)
+    const authHelper = gitAuthHelper.createAuthHelper(git, settings)
+    await authHelper.configureAuth()
+    let gitConfigContent = (
+      await fs.promises.readFile(gitConfigPath)
+    ).toString()
+    expect(gitConfigContent.indexOf('http.')).toBeGreaterThanOrEqual(0) // sanity check
+
+    // Act
+    await authHelper.removeAuth()
+
+    // Assert git config
+    gitConfigContent = (await fs.promises.readFile(gitConfigPath)).toString()
+    expect(gitConfigContent.indexOf('http.')).toBeLessThan(0)
+  })
+})
+
+async function setup(testName: string): Promise<void> {
+  testName = testName.replace(/[^a-zA-Z0-9_]+/g, '-')
+
+  // Directories
+  workspace = path.join(testWorkspace, testName, 'workspace')
+  runnerTemp = path.join(testWorkspace, testName, 'runner-temp')
+  await fs.promises.mkdir(workspace, {recursive: true})
+  await fs.promises.mkdir(runnerTemp, {recursive: true})
+  process.env['RUNNER_TEMP'] = runnerTemp
+
+  // Create git config
+  gitConfigPath = path.join(workspace, '.git', 'config')
+  await fs.promises.mkdir(path.join(workspace, '.git'), {recursive: true})
+  await fs.promises.writeFile(path.join(workspace, '.git', 'config'), '')
+
+  git = {
+    branchDelete: jest.fn(),
+    branchExists: jest.fn(),
+    branchList: jest.fn(),
+    checkout: jest.fn(),
+    checkoutDetach: jest.fn(),
+    config: jest.fn(async (key: string, value: string) => {
+      await fs.promises.appendFile(gitConfigPath, `\n${key} ${value}`)
+    }),
+    configExists: jest.fn(
+      async (key: string): Promise<boolean> => {
+        const content = await fs.promises.readFile(gitConfigPath)
+        const lines = content
+          .toString()
+          .split('\n')
+          .filter(x => x)
+        return lines.some(x => x.startsWith(key))
+      }
+    ),
+    fetch: jest.fn(),
+    getWorkingDirectory: jest.fn(() => workspace),
+    init: jest.fn(),
+    isDetached: jest.fn(),
+    lfsFetch: jest.fn(),
+    lfsInstall: jest.fn(),
+    log1: jest.fn(),
+    remoteAdd: jest.fn(),
+    setEnvironmentVariable: jest.fn(),
+    tagExists: jest.fn(),
+    tryClean: jest.fn(),
+    tryConfigUnset: jest.fn(
+      async (key: string): Promise<boolean> => {
+        let content = await fs.promises.readFile(gitConfigPath)
+        let lines = content
+          .toString()
+          .split('\n')
+          .filter(x => x)
+          .filter(x => !x.startsWith(key))
+        await fs.promises.writeFile(gitConfigPath, lines.join('\n'))
+        return true
+      }
+    ),
+    tryDisableAutomaticGarbageCollection: jest.fn(),
+    tryGetFetchUrl: jest.fn(),
+    tryReset: jest.fn()
+  }
+
+  settings = {
+    authToken: 'some auth token',
+    clean: true,
+    commit: '',
+    fetchDepth: 1,
+    lfs: false,
+    persistCredentials: true,
+    ref: 'refs/heads/master',
+    repositoryName: 'my-repo',
+    repositoryOwner: 'my-org',
+    repositoryPath: ''
+  }
+}