How to test django model method __str__()

问题

I trying to test __str__ method, and when trying to access it in my test it returns my model instance (I think it is)

def test_str_is_equal_to_title(self):
    """
    Method `__str__` should be equal to field `title`
    """
    work = Work.objects.get(pk=1)
    self.assertEqual(work.__str__, work.title)

And from test I get:

AssertionError: '<bound method Work.__str__ of <Work: Test title>>' != 'Test title'

How I should compare these 2 values to pass test?

回答1:

According to the documentation:

Model.__str__()

The __str__() method is called whenever you call str() on an object.

You need to call str() on the model instance:

self.assertEqual(str(work), work.title)

回答2:

Alternatively, you may simply call it like:

model_instance.__str__()

来源：https://stackoverflow.com/questions/29077509/how-to-test-django-model-method-str