class QueryTest

class QueryTest extends ViewsKernelTestBase {
  
  /**
   * Views used by this test.
   *
   * @var array
   */
  public static $testViews = [
    'test_view',
  ];
  protected function viewsData() {
    $data = parent::viewsData();
    $data['views_test_data']['table']['base']['query_id'] = 'query_test';
    return $data;
  }
  
  /**
   * Tests query plugins.
   */
  public function testQuery() {
    $this->_testInitQuery();
    $this->_testQueryExecute();
    $this->queryMethodsTests();
  }
  
  /**
   * Tests the ViewExecutable::initQuery method.
   */
  public function _testInitQuery() {
    $view = Views::getView('test_view');
    $view->setDisplay();
    $view->initQuery();
    $this->assertInstanceOf(QueryTestPlugin::class, $view->query);
  }
  public function _testQueryExecute() {
    $view = Views::getView('test_view');
    $view->setDisplay();
    $view->initQuery();
    $view->query
      ->setAllItems($this->dataSet());
    $this->executeView($view);
    $this->assertNotEmpty($view->result, 'Make sure the view result got filled');
  }
  
  /**
   * Tests methods provided by the QueryPluginBase.
   *
   * @see \Drupal\views\Plugin\views\query\QueryPluginBase
   */
  protected function queryMethodsTests() {
    $view = Views::getView('test_view');
    $view->setDisplay();
    $view->initQuery();
    $this->assertNull($view->query
      ->getLimit(), 'Default to an empty limit.');
    $rand_number = rand(5, 10);
    $view->query
      ->setLimit($rand_number);
    $this->assertEquals($rand_number, $view->query
      ->getLimit(), 'set_limit adapts the amount of items.');
  }

}