public function testDeleteGroupAssignment()
{
$this->insertDatabaseFixture(__DIR__ . '/_fixtures/existing_types.php');
$gateway = $this->getGateway();
$gateway->deleteGroupAssignment(1, 1, 0);
$this->assertQueryResult(array(array('1')), $this->getDatabaseHandler()->createSelectQuery()->select('COUNT(*)')->from('ezcontentclass_classgroup')->where('contentclass_id = 1'));
}