Mutation Testing in Haskell

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That’s very nice! I wanted mutation testing in Haskell for years!

What’s the underlying mechanism of mutation? Do you mutate source code and recompile it somehow?

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not a FOSS license tho..

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There’s a GHC plugin that compiles all the mutations into the same binary so that you still only need to compile once. The mutations are then activated one-by-one at runtime by the mutation engine.

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