Summary

We have finally covered the most important topic in Python programming: automated testing. After proving its importance and considering best design principles, we discussed the basic API for two popular Python 3 test frameworks. In particular we covered:

• Unit testing

• Test-driven development

• The unittest module

• Assertion methods and code setup/cleanup

• The py.test framework

• Code coverage

In the next chapter, we'll wrap up our learning with a compendium of object-oriented frameworks and libraries that work in Python 3.