12: Coverage.py with Ned Batchelder

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In this episode I interview Ned Batchelder.

I know that coverage.py is very important to a lot of people to understand how much of their code is being covered by their test suites.
Since I’m far from an expert on coverage, I asked Ned to discuss it on the show.

I’m also quite a fan of Ned’s 2014 PyCon talk “Getting Started Testing”, so I definitely asked him about that.

We also discuss edX, Python user groups, PyCon talks, and more.

Some of what’s covered (pun intended) in this episode:

• coverage.py
  • types of coverage
    • Line coverage
    • branch coverage
    • Behavior coverage
    • Data coverage
  • How Ned became the owner of coverage.py
  • Running tests from coverage.py vs running coverage from test runner.
• edX
  • what is it
  • what Ned’s role is
• Ned’s blog
• Ned’s PyCon 2014 talk “Getting Started Testing”
  • Teaching testing and the difficulty of the classes being part of unittest
  • fixtures package
  • some of the difficulties of teaching unittest because of it’s class based system.
  • the history of classes in unittest coming from java’s jUnit implementation
• Boston’s Python Group
• PyCon in Portland
• Ned to do a talk here “Machete mode debugging”.
• Practicing PyCon talks at local group meetings.
• At the very least, practice it in front of a live audience.

Links:

• Ned Batchelder
• Coverage
• Coverage documentation
• django-nose
• pytest-django
• edX
• open edX
• Boston Python User Group
• Portland Python User Group – I need to go to these
• PyCon 2016 – Planning on attending, it’s in Portland. Yay!
• Getting Started Testing – Ned’s 2014 Pycon talk