A Promise Checked is a Promise Kept: Inspection Testing
Please log in to watch this conference skillscast.
But, in practice, these promises often don’t hold. They held at some point in the past, when the author checked them manually, but later versions regressed.
This problem can be fixed with inspection-testing, a Haskell library and plugin to the compiler that allows you to explicitly state what you expect from the compilers optimizations, and have the compiler check that it actually happens. This can be used by library authors to test their promises, but also by users to learn more about what the compiler does with their code.
In this talk, you will discover the tale of broken promises in commonly used Haskell libraries, and you will learn how these promises can be checked automatically using inspection-testing.
YOU MAY ALSO LIKE:
- Winter is Coming – Even Faster (SkillsCast recorded in November 2020)
- Hack & Hang Night (in Chicago on 21st February 2023)
- Haskell Wednesday: Bring Your Project, Get help with your code & socialise (Online Meetup on 23rd February 2023)
- Teaching Haskell...To High Schoolers! (SkillsCast recorded in December 2022)
- Teaching Haskell...To High Schoolers! (SkillsCast recorded in December 2022)
Thank you to our sponsors and partners
Platinum
Silver
Partners
A Promise Checked is a Promise Kept: Inspection Testing
Joachim Breitner
Ever since Joachim Breitner got infected with the Haskell fever in 2005, he has been an active part of the community, with many contributions to GHC, and currently most active driving the GHC proposal process. He obtained a PhD in Karlsruhe, Germany, for the inception and formal verification of the Call Arity program transformation, has worked as a post-doc with Stephanie Weirich at the University of Pennsylvania to make formal verification of Haskell practical, and is currently a Senior Researcher and Engineer at the DFINITY Foundation. If this year’s Haskell eXchange were live in London, you might stumble across him in the evening dancing Swing or Tango Argentino, or performing at a stand-up comedy open mic.