public function test_delete_success()
{
$r = self::factory()->response->create();
$response = new \WeBWorK\Server\Response($r);
$this->assertTrue($response->exists());
$this->assertTrue($response->delete());
$response_2 = new \WeBWorK\Server\Vote($r);
$this->assertFalse($response_2->exists());
}
public function test_response_count_cache_should_be_invalidated_on_deleted_response()
{
$q = self::factory()->question->create_and_get();
$r = new \WeBWorK\Server\Response();
$r->set_question_id($q->get_id());
$r->save();
$this->assertSame(1, $q->get_response_count());
$r->delete();
$this->assertSame(0, $q->get_response_count());
}