Mutation Testing in Python • Austin Bingham • GOTO 2015

This presentation was recorded at GOTO Copenhagen 2015 http://gotocph.com Austin Bingham - Founder and Technical Director at Sixty North AS ABSTRACT Mutation testing is a technique for systematically mutating source code in order to validate test suites. It makes small changes to a program’s source code and then runs a test suite; if the test suite ever succeeds on mutated code then a flag is raised. I’ll begin this talk with a description of the theory behind [...] Download slides and read the full abstract here: http://gotocon.com/cph-2015/presentation/Mutation%20Testing%20in%20Python TIMECODES 0:00 Introduction 3:27 What is mutation testing? 4:38 Basic algorithm 5:12 What does mutation testing tell us? 7:31 Goal #1: Coverage analysis 8:29 Goal #2: Detect unnecessary code 10:03 Examples of mutations 12:56 It takes a loooooooong time 15:51 Incompetence detection 17:12 Equivalent mutants 19:54 Cosmic Ray operates on packages 22:25 Test system plugins 25:10 Operators 26:15 Example operator: Reverse unary subtraction 27:02 Module management: overview 29:03 Module management: Finder 30:47 Module management: Loader 31:33 multiprocessing 35:30 asyncio 36:03 Operational overview https://twitter.com/gotocph https://www.facebook.com/GOTOConference http://gotocon.com #Python #MutationTesting #PythonProgramming Looking for a unique learning experience? Attend the next GOTO conference near you! Get your ticket at https://gotopia.tech Sign up for updates and specials at https://gotopia.tech/newsletter