"Advanced unit testing in Python" by Rory Geoghegan Level: Intermediate Abstract: Now that you have played around with the rudimentaries of the unittest module, and started writitng tests for your code, how can you make things easier? I'll go over the new additions to the unittest module in Python 2.7, the use of the mock library, and how to use them together to write effective unit tests. Demo source code: github.com/​rgeoghegan/​python-ireland-2011-02-unittests/​tree/​master Video: http://vimeo.com/groups/pythonireland/videos/20240436 Thanks to all who came along. Approx. 30 people turned up. Thanks to Science Gallery for being our host. sciencegallery.com/​

1. Advanced Unittesting in
Python
Rory Geoghegan
Python Dublin - February 2011

2. Look Ma! I’m
Unittesting!
• Battery of unit tests
• Really good coverage
• TDD (well, sometimes)
• Push it farther

3. Python 2.7
Backported in unittest2

4. Asserts, oh my!
• assertAlmostEqual
• assertGreater
• assertRaisesRegexp
• assertRegexpMatches
• assertMultiLineEqual
• assertIn

5. Build it up, tear it down
Use
setUp

6. Build it up, tear it down
Use
setUp
setUpClass

7. Build it up, tear it down
Use
setUp
setUpClass
setUpModule

8. Yours to discover!
python -m unittest discover -s [path]

9. Mock!

10. More Mock!

11. For more information,
http://github.com/rgeoghegan/python-ireland-2011-02-
unittests