class UserAuthTest

class UserAuthTest extends UnitTestCase {

  /**
   * The mock user storage.
   *
   * @var \Drupal\Core\Entity\EntityStorageInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $userStorage;

  /**
   * The mocked password service.
   *
   * @var \Drupal\Core\Password\PasswordInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $passwordService;

  /**
   * The mock user.
   *
   * @var \Drupal\user\Entity\User|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $testUser;

  /**
   * The user auth object under test.
   *
   * @var \Drupal\user\UserAuth
   */
  protected $userAuth;

  /**
   * The test username.
   *
   * @var string
   */
  protected $username = 'test_user';

  /**
   * The test password.
   *
   * @var string
   */
  protected $password = 'password';

  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->userStorage = $this
      ->createMock('Drupal\\Core\\Entity\\EntityStorageInterface');

    /** @var \Drupal\Core\Entity\EntityTypeManagerInterface|\PHPUnit\Framework\MockObject\MockObject $entity_type_manager */
    $entity_type_manager = $this
      ->createMock(EntityTypeManagerInterface::class);
    $entity_type_manager
      ->expects($this
      ->any())
      ->method('getStorage')
      ->with('user')
      ->willReturn($this->userStorage);
    $this->passwordService = $this
      ->createMock('Drupal\\Core\\Password\\PasswordInterface');
    $this->testUser = $this
      ->getMockBuilder('Drupal\\user\\Entity\\User')
      ->disableOriginalConstructor()
      ->onlyMethods([
      'id',
      'setPassword',
      'save',
      'getPassword',
    ])
      ->getMock();
    $this->userAuth = new UserAuth($entity_type_manager, $this->passwordService);
  }

  /**
   * Tests failing authentication with missing credential parameters.
   *
   * @covers ::authenticate
   *
   * @dataProvider providerTestAuthenticateWithMissingCredentials
   */
  public function testAuthenticateWithMissingCredentials($username, $password) {
    $this->userStorage
      ->expects($this
      ->never())
      ->method('loadByProperties');
    $this
      ->assertFalse($this->userAuth
      ->authenticate($username, $password));
  }

  /**
   * Data provider for testAuthenticateWithMissingCredentials().
   *
   * @return array
   */
  public static function providerTestAuthenticateWithMissingCredentials() {
    return [
      [
        NULL,
        NULL,
      ],
      [
        NULL,
        '',
      ],
      [
        '',
        NULL,
      ],
      [
        '',
        '',
      ],
    ];
  }

  /**
   * Tests the authenticate method with no account returned.
   *
   * @covers ::authenticate
   */
  public function testAuthenticateWithNoAccountReturned() {
    $this->userStorage
      ->expects($this
      ->once())
      ->method('loadByProperties')
      ->with([
      'name' => $this->username,
    ])
      ->willReturn([]);
    $this
      ->assertFalse($this->userAuth
      ->authenticate($this->username, $this->password));
  }

  /**
   * Tests the authenticate method with an incorrect password.
   *
   * @covers ::authenticate
   */
  public function testAuthenticateWithIncorrectPassword() {
    $this->userStorage
      ->expects($this
      ->once())
      ->method('loadByProperties')
      ->with([
      'name' => $this->username,
    ])
      ->willReturn([
      $this->testUser,
    ]);
    $this->passwordService
      ->expects($this
      ->once())
      ->method('check')
      ->with($this->password, $this->testUser
      ->getPassword())
      ->willReturn(FALSE);
    $this
      ->assertFalse($this->userAuth
      ->authenticate($this->username, $this->password));
  }

  /**
   * Tests the authenticate method with a correct password.
   *
   * @covers ::authenticate
   */
  public function testAuthenticateWithCorrectPassword() {
    $this->testUser
      ->expects($this
      ->once())
      ->method('id')
      ->willReturn(1);
    $this->userStorage
      ->expects($this
      ->once())
      ->method('loadByProperties')
      ->with([
      'name' => $this->username,
    ])
      ->willReturn([
      $this->testUser,
    ]);
    $this->passwordService
      ->expects($this
      ->once())
      ->method('check')
      ->with($this->password, $this->testUser
      ->getPassword())
      ->willReturn(TRUE);
    $this
      ->assertSame(1, $this->userAuth
      ->authenticate($this->username, $this->password));
  }

  /**
   * Tests the authenticate method with a correct password.
   *
   * We discovered in https://www.drupal.org/node/2563751 that logging in with a
   * password that is literally "0" was not possible. This test ensures that
   * this regression can't happen again.
   *
   * @covers ::authenticate
   */
  public function testAuthenticateWithZeroPassword() {
    $this->testUser
      ->expects($this
      ->once())
      ->method('id')
      ->willReturn(2);
    $this->userStorage
      ->expects($this
      ->once())
      ->method('loadByProperties')
      ->with([
      'name' => $this->username,
    ])
      ->willReturn([
      $this->testUser,
    ]);
    $this->passwordService
      ->expects($this
      ->once())
      ->method('check')
      ->with(0, 0)
      ->willReturn(TRUE);
    $this
      ->assertSame(2, $this->userAuth
      ->authenticate($this->username, 0));
  }

  /**
   * Tests the authenticate method with a correct password & new password hash.
   *
   * @covers ::authenticate
   */
  public function testAuthenticateWithCorrectPasswordAndNewPasswordHash() {
    $this->testUser
      ->expects($this
      ->once())
      ->method('id')
      ->willReturn(1);
    $this->testUser
      ->expects($this
      ->once())
      ->method('setPassword')
      ->with($this->password);
    $this->testUser
      ->expects($this
      ->once())
      ->method('save');
    $this->userStorage
      ->expects($this
      ->once())
      ->method('loadByProperties')
      ->with([
      'name' => $this->username,
    ])
      ->willReturn([
      $this->testUser,
    ]);
    $this->passwordService
      ->expects($this
      ->once())
      ->method('check')
      ->with($this->password, $this->testUser
      ->getPassword())
      ->willReturn(TRUE);
    $this->passwordService
      ->expects($this
      ->once())
      ->method('needsRehash')
      ->with($this->testUser
      ->getPassword())
      ->willReturn(TRUE);
    $this
      ->assertSame(1, $this->userAuth
      ->authenticate($this->username, $this->password));
  }

  /**
   * Tests the auth that ends in a redirect from subdomain to TLD.
   */
  public function testAddCheckToUrlForTrustedRedirectResponse() : void {
    $site_domain = 'site.com';
    $frontend_url = "https://{$site_domain}";
    $backend_url = "https://api.{$site_domain}";
    $request = Request::create($backend_url);
    $response = new TrustedRedirectResponse($frontend_url);
    $request_context = $this
      ->createMock(RequestContext::class);
    $request_context
      ->method('getCompleteBaseUrl')
      ->willReturn($backend_url);
    $container = new ContainerBuilder();
    $container
      ->set('router.request_context', $request_context);
    \Drupal::setContainer($container);
    $session_mock = $this
      ->createMock(SessionInterface::class);
    $session_mock
      ->expects($this
      ->once())
      ->method('has')
      ->with('check_logged_in')
      ->willReturn(TRUE);
    $session_mock
      ->expects($this
      ->once())
      ->method('remove')
      ->with('check_logged_in');
    $event = new ResponseEvent($this
      ->createMock(HttpKernelInterface::class), $request, HttpKernelInterface::MAIN_REQUEST, $response);
    $request
      ->setSession($session_mock);
    $this
      ->getMockBuilder(Cookie::class)
      ->disableOriginalConstructor()
      ->onlyMethods([])
      ->getMock()
      ->addCheckToUrl($event);
    $this
      ->assertSame("{$frontend_url}?check_logged_in=1", $response
      ->getTargetUrl());
  }

  /**
   * Tests the auth that ends in a redirect from subdomain with a fragment to TLD.
   */
  public function testAddCheckToUrlForTrustedRedirectResponseWithFragment() : void {
    $site_domain = 'site.com';
    $frontend_url = "https://{$site_domain}";
    $backend_url = "https://api.{$site_domain}";
    $request = Request::create($backend_url);
    $response = new TrustedRedirectResponse($frontend_url . '#a_fragment');
    $request_context = $this
      ->createMock(RequestContext::class);
    $request_context
      ->method('getCompleteBaseUrl')
      ->willReturn($backend_url);
    $container = new ContainerBuilder();
    $container
      ->set('router.request_context', $request_context);
    \Drupal::setContainer($container);
    $session_mock = $this
      ->createMock(SessionInterface::class);
    $session_mock
      ->expects($this
      ->once())
      ->method('has')
      ->with('check_logged_in')
      ->willReturn(TRUE);
    $session_mock
      ->expects($this
      ->once())
      ->method('remove')
      ->with('check_logged_in');
    $event = new ResponseEvent($this
      ->createMock(HttpKernelInterface::class), $request, HttpKernelInterface::MAIN_REQUEST, $response);
    $request
      ->setSession($session_mock);
    $this
      ->getMockBuilder(Cookie::class)
      ->disableOriginalConstructor()
      ->onlyMethods([])
      ->getMock()
      ->addCheckToUrl($event);
    $this
      ->assertSame("{$frontend_url}?check_logged_in=1#a_fragment", $response
      ->getTargetUrl());
  }

}