Hypothesis_Randomised_testing_for_Django.pdf

A talk given at DjangoCon Europe in June 2015, about Hypothesis, the property-based fuzz testing library for Python.

Explains the advantages of using Hypothesis, describes its Django-specific features, and shows some example code for including Hypothesis in Django tests.

Transcript

1. Hypothesis Randomised testing for Django Rae Knowler, DjangoCon Europe 2015
2. Introduction
3. Rae Knowler CKAN, Symfony, Django @RaeKnowler they/their/them
4. David MacIver and Sinister Katze @DRMacIver @sinister_katze
5. Hypothesis Property based testing library Inspired by Haskell’s Quickcheck http://hypothesis.readthedocs.org
6. Hypothesis
7. Why is it so great?
8. Why is it so great? • Lots of randomised data
9. Why is it so great? • Lots of randomised data • Simplifies examples
10. Why is it so great? • Lots of randomised data • Simplifies examples • Remembers interesting inputs
11. Why is it so great? • Lots of randomised data • Simplifies examples • Remembers interesting inputs • Can deal with complex data types
12. Why is it so great? • Lots of randomised data • Simplifies examples • Remembers interesting inputs • Can deal with complex data types • Works with pytest and unittest
13. Hypothesis + Django
14. hypothesis-django
15. hypothesis-django • Custom field types
16. hypothesis-django • Custom field types • Generate child models
17. hypothesis-django • Custom field types • Generate child models • Fixtures (new!)
18. Getting started
19. Install pip install hypothesis pip install hypothesis-django
20. Demo
27. Summary
28. Links hypothesis.readthedocs.org github.com/bellisk/hypothesis-django-example @RaeKnowler raeknowler.com
29. Thank you!