#63: Validating Python tests with mutation testing

Talk Python To Me

Michael Kennedy

Technology

4.8 • 635 Ratings

🗓️ 16 June 2016

⏱️ 60 minutes

🔗️ Recording | iTunes | RSS

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Summary

Do you think it's a good idea to test your software? Do you write unit tests or other automated verification for code? I think most of us do these days. A key question is how do you know whether your tests sufficiently verify your code? The standard answer is code coverage.

Transcript

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0:00.0	Do you think it's a good idea to test your software? Do you write unit tests or other automated
0:04.1	verification for your code? I think most of us do these days. But a key question is, how do you
0:09.8	know whether your tests efficiently verify your code? And the standard answer is code coverage.
0:15.0	But there's a big difference between executing code, which is what code coverage measures,
0:19.5	and truly verifying it. On this episode,
0:21.8	we'll talk with Austin Bingham. He created a mutation testing framework for Python that goes beyond
0:27.0	code coverage to actually perform this verification. It's a fresh and powerful idea. I hope you
0:31.8	enjoy it. This is Talk Python to Me, episode 63, recorded June 15th, 2016.
0:38.8	I'm a developer, developers, developers, developers, developers.
0:41.2	I'm a developer in many senses of the word, because I make these applications, but I also
0:46.5	use these verbs to make this music. I constructed line by line, just like when I'm coding
0:51.7	another software design. In both cases cases it's about design patterns anyone
0:56.9	can get the job done it's the execution that matters i have many interests sometimes can
1:01.6	welcome to talk python to me a weekly podcast on python the language the libraries the ecosystem
1:07.4	and the personalities this is your host michael kennedy follow me on twitter where i'm at m kennedy keep up with the show and the personalities. This is your host, Michael Kennedy. Follow me on Twitter
1:11.6	where I'm at M. Kennedy. Keep up with the show and listen to past episodes at talk python.fm
1:16.5	and follow the show on Twitter via at Talk Python. This episode is brought to you by Hired and
1:21.7	SnapCi. Thank them for supporting the show on Twitter via at Hired underscore HQ and and at Snap underscore CI. Hey everyone, we have an
1:31.0	interesting deep dive into the world of Python testing and Python internals today. Before we chat with
1:36.0	Austin about mutation testing and his Python library called Cosmic Ray, I have a few goodies to give
1:40.7	away to a lucky couple of listeners. First, Austin and his co-author Rob are giving away a copy of their book, The Python
1:48.1	Apprentice, as well as two free passes to their online Python course.
	...

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