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Strategic Testing Decisions
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Francesco Strazzullo Partner/Developer @Flowing “I help development teams in making technical decisions” Interested? Contact me @TheStrazz86
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Why am I here? _
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Help making mindful decisions about software testing _
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Copyright by Nintendo (Miyamoto, please don’t sue me)
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No Animals Were Harmed in the Making of This Slide
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“No Silver Bullet” _
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How to choose the right testing strategy for a product? _
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Let’s perform a cost–benefit analysis about testing _
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What is the cost of testing? _
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Opportunity Cost _
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Testing is not “free” _
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What are the benefits of testing? _
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What is a test? _
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“Tests are just one form of feedback” Kent Beck https://blogs.oracle.com/javamagazine/interview-with-kent-beck
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A feedback about correctness _
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“Tests are just one form of feedback” Kent Beck https://blogs.oracle.com/javamagazine/interview-with-kent-beck
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Market is the only real feedback to test new ideas _
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Help making mindful decisions about software feedbacks _
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Are tests the right form of feedback for your context? _
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3X Model by Antony Marcano @ RiverGlide
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Falk2, CC BY-SA 4.0, via Wikimedia Commons
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In Explore phase, 90% of your code could be waste _
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Do you want to test it? _
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Tests needed in each phase of 3X Model
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Some consideration on Explore _
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How to understand what to test? _
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Let the evolution decide _
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Spike and Stabilize _ Video by Dan North
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How to quickly have a feedback from the market? _
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Put it in production, now. _ Walking Skeleton on crutches by Gojko Adzic
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What happens if something breaks? _
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BlueGreenDeployment by Martin Fowler
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CanaryRelease by Martin Fowler
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How to reduce waste? _
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User Research and Prototyping _
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Accattatevillʼ (“buy it” in Neapolitan) https://www.avanscoperta.it/en/training/decision-making-for-software-development-teams/ https://leanpub.com/decision-making-for-software-development-teams/c/build-stuff
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Thanks Francesco Strazzullo strazz@flowing.it