Python: How to unit test a custom HTTP request Handler?

Question

I have a custom HTTP request handler that can be simplified to something like this:

# Python 3:
from http import server

c         


        

Answer 1

So this is a little tricky depending on how "deep" you want to go into the BaseHTTPRequestHandler behavior to define your unit test. At the most basic level I think you can use this example from the mock library:

>>> from mock import MagicMock
>>> thing = ProductionClass()
>>> thing.method = MagicMock(return_value=3)
>>> thing.method(3, 4, 5, key='value')
3
>>> thing.method.assert_called_with(3, 4, 5, key='value')

So if you know which methods in the BaseHTTPRequestHandler your class is going to call you could mock the results of those methods to be something acceptable. This can of course get pretty complex depending on how many different types of server responses you want to test.