#!/bin/sh

set -e

CABAL=${CABAL:-cabal}
HC=${HC:-ghc}

# Install cpphs if it is not in path
command -v cpphs || ${CABAL} v2-install --ignore-project --with-compiler "$HC" cpphs

# Regenerate quickcheck-hugs
sh make-hugs
find quickcheck-hugs

die() {
    echo "TEST FAILED"
    exit 1
}

dotest() {
  echo "$2" | hugs -98 -Pquickcheck-hugs: -p'> ' "$1" | tee hugs.output
  grep "$3" hugs.output || die
}

# Simple tests
dotest Test.QuickCheck 'quickCheck $ \xs -> reverse (reverse xs) === (xs :: [Int])' "OK, passed 100 tests."