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}')]");
        }
    }

}