$model7 = TestUserListModel::create();
$test7 = $model7->where('name', null, 'is')->get();
$this->assertEquals("SELECT * FROM user_test_list WHERE name is NULL LIMIT 1", $model7->lastQuery()->getLastQuery());
$test7 = $model7->where('name', null, 'not')->get();
$this->assertEquals("SELECT * FROM user_test_list WHERE name not NULL LIMIT 1", $model7->lastQuery()->getLastQuery());