def test_model_with_evaluate_method(self):
        dept = Department.objects.create(pk=1, name='abc')
        dept.evaluate = 'abc'
        Worker.objects.filter(department=dept)
Ensures that you can filter by objects that have an 'evaluate' attr
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/tests/regressiontests/model_regress/tests.py/EvaluateMethodTest.test_model_with_evaluate_method