unsetLock example

// Set the lock object with a different owner than the mocked account above.     $lock = new Lock(2, (int) $_SERVER['REQUEST_TIME']);
    $view_ui->setLock($lock);
    $this->assertTrue($view_ui->isLocked());

    // Set a different lock object with the same object as the mocked account.     $lock = new Lock(1, (int) $_SERVER['REQUEST_TIME']);
    $view_ui->setLock($lock);
    $this->assertFalse($view_ui->isLocked());

    $view_ui->unsetLock(NULL);
    $this->assertFalse($view_ui->isLocked());
  }

  /** * Tests serialization of the ViewUI object. */
  public function testSerialization() {
    $storage = new View([], 'view');
    $executable = $this->getMockBuilder('Drupal\views\ViewExecutable')
      ->disableOriginalConstructor()
      ->setConstructorArgs([$storage])