[Haskell-cafe] Using quickcheck to check for errors

[Rafael Almeida]

Hello,

Let's say we want to quickcheck the function !!. Passing a negative index
to it is an error. However, how can you make a check that it indeed errors
in such situation?

prop_negative_index_generates_error list = forAll negativeIndex \x -> ...

What should I write in ...?

[]'s
Rafael
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