Testing Form In Django With A User Object

Question

I am working on testing - and I have a little form with a good chunk of logic in the clean method.

My test looks like this:

class DependentFormTest(TestCase):

    def test_dependent_form_birthdate_out_of_range(self):
        form_data = {
            'first_name': 'Bill',
            'last_name': 'Robusin',
            'birth_date': '10/12/1801',
            'gender': 'Male',
            'relationship': 'dependent',
            'street_address_1': '123 Any lane',
            'city': 'Billson',
            'state': 'WA',
            'zip': '50133',
        }
        form = DependentForm(data=form_data)
        self.assertFalse(form.is_valid())

In my clean method there is a bit where I access some information about the current user. The snippet that fails looks like this:

user_benefit = Benefit.objects.get(user=self.user)

This line is what causes my test to error with the following error:

Benefit matching query does not exist

This is true, because in the test 'user' is 'None'.

How do I set a user in my test so that I can test this forms validity?

user4691348 · Accepted Answer · 2017-10-13 13:18:57Z

2

in your test setUp() method you could create a user for testing purposes. and then reuse it.

As far as i understand your user comes from the request. So you would need to use django test client to login and post the data into your form.

answered Oct 13, 2017 at 13:18

user4691348

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lmr2391 · Accepted Answer · 2017-10-13 14:26:58Z

1

You can't access the user in a form's clean method if the user is not set explicitly during the forms initialization (see here: django: how to access current request user in ModelForm? )

If you pass the user to the constructor during form initialization, you can also do that in your test.

user = User.objects.first() # probably you should think about a better way to obtain a user instance
form = DependentForm(data=form_data, user=user)
self.assertFalse(form.is_valid())

answered Oct 13, 2017 at 14:26

lmr2391

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