Re: [Haskell-beginners] How to test "error"?

12 Jun 2019


      Yes, "evaluate" does the trick. Thank you.

On Tue, Jun 11, 2019 at 2:39 AM Francesco Ariis  wrote:
...
Hello Hilco,
On Mon, Jun 10, 2019 at 08:44:30PM -0700, Hilco Wijbenga wrote:
...
f :: Whatever
f = error "This should never happen."
spec :: Spec
spec =
    describe "f" $
        it "error" $
            return f `shouldThrow` anyErrorCall
import qualified Control.Exception as E
and
E.evaluate tt' f `shouldThrow` anyErrorCall
should work. Does this work?
-F
_______________________________________________
Beginners mailing list
Beginners@haskell.org
http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners