Python/Django: how to assert that unit test result contains a certain string?

Question

In a python unit test (actually Django), what is the correct assert statement that will tell me if my test result contains a string of my choosing?

self.assertContainsTheString(result, {"car" : ["toyota","honda"]}) 

I want to make sure that my result contains at least the json object (or string) that I specified as the second argument above

{"car" : ["toyota","honda"]} 

Answer 1

To assert if a string is or is not a substring of another, you should use assertIn and assertNotIn:

# Passes self.assertIn('bcd', 'abcde')  # AssertionError: 'bcd' unexpectedly found in 'abcde' self.assertNotIn('bcd', 'abcde') 

These are new since Python 2.7 and Python 3.1