Functionality "Count lines" is implemented by
 Haskell function Erroneous:countLines
 Tests for functionality "Count lines"
These are eight words
that span two lines.
= 2
These are eight words
that span
three lines.
= 3
 Functionality "Raise exception" is implemented by shell command
 "./exception.sh"
 Tests for functionality "Raise exception"

When a shell script returns a non-zero exit code, that should be interpreted as an exception by Falderal, which can be matched with an expected exception block.

whatever
? gello