convert JUnit assertions to simple Spock comparisions

junit2spock.sh

junit2spock() {
  local file="$1"
  if [ -e "$file" ]
  then
      echo "converting file '$file'"
  else
      echo "file '$file' was not found"
  fi

  perl -i -pe 's|assertTrue\(([^";]+)\);|\1|g' $file
  perl -i -pe 's|assertFalse\(([^";]+)\);|\1 == false|g' $file
  perl -i -pe 's|assertNull\(([^";]+)\);|\1 == null|g' $file
  perl -i -pe 's|assertNotNull\(([^";]+)\);|\1 != null|g' $file

  local varMatch="a-zA-Z0-9_\.\(\)\[\]"
  local eqRegex="([$varMatch]+(?:\((?:[$varMatch]+(?:\s*,\s*[$varMatch]+)*)?\))?)"
  perl -i -pe "s|assertEquals\(\s*$eqRegex\s*,\s*$eqRegex\s*\);|\2 == \1|g" $file
  perl -i -pe "s|assertEquals\(\"([^\"]*)\",\s*$eqRegex\s*\);|\2 == \"\1\""|g
}