Test if a class is inherited from another
PythonUnit TestingPython Problem Overview
This question is more Python related than Django related. I want to test write a test for this function that I am using to get a Django form dynamically with the fields I set.
def quiz_form_factory(question):
properties = {
'question': forms.IntegerField(widget=forms.HiddenInput, initial=question.id),
'answers': forms.ModelChoiceField(queryset=question.answers_set)
}
return type('QuizForm', (forms.Form,), properties)
I want to test if, the QuizForm class returned is inherited from forms.Form.
Something like:
self.assertTrue(QuizForm isinheritedfrom forms.Form) # I know this does not exist
Is there any way to do this?
Python Solutions
Solution 1 - Python
Use issubclass(myclass, parentclass).
In your case:
self.assertTrue( issubclass(QuizForm, forms.Form) )
Solution 2 - Python
Use the built-in issubclass function. e.g.
issubclass(QuizForm, forms.Form)
It returns a bool so you can use it directly in self.assertTrue()