A recent Twitter thread by Simon Willison reminded me that I've been meaning to do an episode on the testing trophy.
 This discussion is about the distinction between unit and integration tests, what those terms mean, and where we should spend our testing time.

Links:

• Simon Willison's Twitter Thread
• The Testing Trophy and Testing Classifications — Kent C Dodds
• Write tests. Not too many. Mostly integration. — Kent C Dodds
• On the Diverse And Fantastical Shapes of Testing — Martin Fowler

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