public function test_creation_sets_values_properly()
 {
     self::factory()->vote->create(array('user_id' => 5, 'item' => new MockVoteable(10), 'value' => 15));
     $v = new \WeBWorK\Server\Vote();
     $v->set_user_id(5);
     $v->set_item(new MockVoteable(10));
     $v->populate();
     $this->assertSame(5, $v->get_user_id());
     $this->assertSame(10, $v->get_item_id());
     $this->assertSame(15, $v->get_value());
 }