1. How to assert that a function used a fixed number of queries?¶
We can count number of queries for testing by using assertNumQueries()
method.
def test_number_of_queries(self):
User.objects.create(username='testuser1', first_name='Test', last_name='user1')
# Above ORM create will run only one query.
self.assertNumQueries(1)
User.objects.filter(username='testuser').update(username='test1user')
# One more query added.
self.assertNumQueries(2)