Overrides Drupal\views\Tests\ViewTestBase::viewsData().
Overrides ViewUnitTestBase::viewsData
protected function viewsData() {
$data = parent::viewsData();
// User the existing test_filter plugin.
$data['views_test_data_alias']['table']['real table'] = 'views_test_data';
$data['views_test_data_alias']['name_alias']['filter']['id'] = 'test_filter';
$data['views_test_data_alias']['name_alias']['filter']['real field'] = 'name';
return $data;
}