class ContactLinkTest

class ContactLinkTest extends ViewTestBase {
  
  /**
   * Stores the user data service used by the test.
   *
   * @var \Drupal\user\UserDataInterface
   */
  public $userData;
  
  /**
   * Modules to enable.
   *
   * @var array
   */
  protected static $modules = [
    'contact_test_views',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * Views used by this test.
   *
   * @var array
   */
  public static $testViews = [
    'test_contact_link',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected function setUp($import_test_views = TRUE, $modules = [
    'contact_test_views',
  ]) : void {
    parent::setUp($import_test_views, $modules);
    $this->userData = $this->container
      ->get('user.data');
  }
  
  /**
   * Tests contact link.
   */
  public function testContactLink() {
    $accounts = [];
    $accounts['root'] = User::load(1);
    // Create an account with access to all contact pages.
    $admin_account = $this->drupalCreateUser([
      'administer users',
    ]);
    $accounts['admin'] = $admin_account;
    // Create an account with no access to contact pages.
    $no_contact_account = $this->drupalCreateUser();
    $accounts['no_contact'] = $no_contact_account;
    // Create an account with access to contact pages.
    $contact_account = $this->drupalCreateUser([
      'access user contact forms',
    ]);
    $accounts['contact'] = $contact_account;
    $this->drupalLogin($admin_account);
    $this->drupalGet('test-contact-link');
    // The admin user has access to all contact links beside their own.
    $this->assertContactLinks($accounts, [
      'root',
      'no_contact',
      'contact',
    ]);
    $this->drupalLogin($no_contact_account);
    $this->drupalGet('test-contact-link');
    // Ensure that the user without the permission doesn't see any link.
    $this->assertContactLinks($accounts, []);
    $this->drupalLogin($contact_account);
    $this->drupalGet('test-contact-link');
    $this->assertContactLinks($accounts, [
      'root',
      'admin',
      'no_contact',
    ]);
    // Disable contact link for no_contact.
    $this->userData
      ->set('contact', $no_contact_account->id(), 'enabled', FALSE);
    // @todo Remove cache invalidation in https://www.drupal.org/node/2477903.
    Cache::invalidateTags($no_contact_account->getCacheTagsToInvalidate());
    $this->drupalGet('test-contact-link');
    $this->assertContactLinks($accounts, [
      'root',
      'admin',
    ]);
  }
  
  /**
   * Asserts whether certain users contact links appear on the page.
   *
   * @param array $accounts
   *   All user objects used by the test.
   * @param array $names
   *   Users which should have contact links.
   *
   * @internal
   */
  public function assertContactLinks(array $accounts, array $names) : void {
    $this->assertSession()
      ->elementsCount('xpath', '//div[contains(@class, "views-field-contact")]//a', count($names));
    foreach ($names as $name) {
      $account_url = $accounts[$name]->toUrl('contact-form')
        ->toString();
      $this->assertSession()
        ->elementExists('xpath', "//div[contains(@class, 'views-field-contact')]//a[contains(@href, '{$account_url}')]");
    }
  }

}