Login screen object and test object example.

gistfile1.php

// With the page object model, what I have is something like this:

class LoginScreen extends MainScreen {
  protected static SCREEN_NAME = 'LoginScreen';

  public function __construct($driver)
  {
    parent::__construct($driver);

    // Various login element selectors.
    $this->EMAIL_FIELD = WebDriverBy::id('email_address');
    $this->PASS_FIELD = WebDriverBy::id('password');
    // etc...
  }

  public function onScreen()
  {
    try {
      $elem = $this->driver->wait($this->WAIT_UNTIL, $this->WAIT_PAUSE)->
        until(WebDriverExpectedCondition::
              visibilityOfElementLocated($this->EMAIL_FIELD));
      return (is_null($elem) ? FALSE : TRUE);
    } catch (NoSuchElementWebDriverError $e) {
      return FALSE;
    }
  }

  /**
   * @return MenuScreen
   */
  public function login($username, $password)
  {
    $this->driver->findElement($this->EMAIL_FIELD)->clear();
    $this->driver->findElement($this->EMAIL_FIELD)->sendKeys($username);
    $this->driver->findElement($this->PASS_FIELD)->sendKeys($password);
    $this->driver->findElement($this->LOGIN_BUTTON)->click('');

    // Check that the user is logged in.                                        
    $menuScreen = new MenuScreen($this->driver);
    if (!$menuScreen->onScreen()) {
      throw new Exception(self::SCREEN_NAME . ': User unable to log in.');
    }
    return $menuScreen;
  }

  // etc...
}


// And my test looks very simple, like this:

class LoginTest extends TestCase
{
  protected $driver;

  public function setUp()
  {
    $this->driver = MainScreen::newDriver();
  }

  public function testLogin()
  {
    $loginScreen = new LoginScreen($this->driver);
    $this->assertTrue($loginScreen->onScreen());
    $loginScreen->login('foo', 'bar');
  }

  public function testLogout()
  {
    $loginScreen = new LoginScreen($this->driver);
    $menuScreen = $loginScreen->login('foo', 'bar');
    $loginScreen = $menuScreen->logout();
    $this->assertTrue($loginScreen->onScreen());
  }

  public function tearDown()
  {
    if (!is_null($this->driver)) $this->driver->quit();
  }
}