--- /dev/null
+<?php
+
+namespace Drupal\Tests\user\Functional;
+
+use Drupal\Tests\BrowserTestBase;
+use Drupal\user\Entity\User;
+
+/**
+ * Tests specific parts of the user entity like the URI callback and the label
+ * callback.
+ *
+ * @group user
+ */
+class UserEntityCallbacksTest extends BrowserTestBase {
+
+ /**
+ * Modules to enable.
+ *
+ * @var array
+ */
+ public static $modules = ['user', 'user_hooks_test'];
+
+ /**
+ * An authenticated user to use for testing.
+ *
+ * @var \Drupal\user\UserInterface
+ */
+ protected $account;
+
+ /**
+ * An anonymous user to use for testing.
+ *
+ * @var \Drupal\user\UserInterface
+ */
+ protected $anonymous;
+
+ protected function setUp() {
+ parent::setUp();
+
+ $this->account = $this->drupalCreateUser();
+ $this->anonymous = User::create(['uid' => 0]);
+ }
+
+ /**
+ * Test label callback.
+ */
+ public function testLabelCallback() {
+ $this->assertEqual($this->account->label(), $this->account->getUsername(), 'The username should be used as label');
+
+ // Setup a random anonymous name to be sure the name is used.
+ $name = $this->randomMachineName();
+ $this->config('user.settings')->set('anonymous', $name)->save();
+ $this->assertEqual($this->anonymous->label(), $name, 'The variable anonymous should be used for name of uid 0');
+ $this->assertEqual($this->anonymous->getDisplayName(), $name, 'The variable anonymous should be used for display name of uid 0');
+ $this->assertEqual($this->anonymous->getUserName(), '', 'The raw anonymous user name should be empty string');
+
+ // Set to test the altered username.
+ \Drupal::state()->set('user_hooks_test_user_format_name_alter', TRUE);
+
+ $this->assertEqual($this->account->getDisplayName(), '<em>' . $this->account->id() . '</em>', 'The user display name should be altered.');
+ $this->assertEqual($this->account->getUsername(), $this->account->name->value, 'The user name should not be altered.');
+ }
+
+}