Overview Description The Haskell QuickCheck backend is a Python XML-RPC service, which provides - in tandem with ECSpooler - automatic testing of Haskell programs using "QuicCheck":http://www.cs.chalmers.se/~rjmh/QuickCheck/. The Haskell QuickCheck backend is derived from Haskell backend. Prerequisites * A UNIX or UNIX-like operating system, e.g., NetBSD, Solaris, Mac OS X, or Linux. The Haskell QuickCheck backend does run on Windows (with some restrictions), but this is neither supported nor recommended. * "Python":http://python.org/ * "Hugs":http://www.haskell.org/hugs/ * "ECSpooler":http://wdok.cs.uni-magdeburg.de/software/ecspooler * ECSpooler is primarily intended to be used via the "ECAutoAssessmentBox":http://plone.org/products/ecautoassessmentbox Plone product. So you will normally have a Plone installation with ECAutoAssessmentBox. * Haskell backend since Haskell QuickCheck is derived from it. Installation * Unzip this archive under the 'backends' directory of your ECSpooler installation (for example '/opt/ESpooler/backends/'). * Adjust values for INTERPRTER and OPTIONS in the script 'backends/haskellqc/runhugs.sh' to your system environemnt. * Make sure that the script 'backends/haskellqc/runhugs.sh' is executable. Security Please read the security section in the Haskell backend's README file and be be aware of the risks if you are *not* able to deal with the configuration issues. Quick Start After installation, first start ECSpooler (see the ECSpooler documentation for details). Then you should be able to start the Haskell QuickCheck backend using the following command (you may have to specify the path):: backendctl -u root -p bazquux HaskellQC start If you run this command as root, the process will be started as user "nobody". Once the backend is running, check the status of the backend using:: spoolerctl -u root -p bazquux status or backendctl -u root -p bazquux HaskellQC status and get a response similar to:: {'queue': 0, 'backends': ['haskellqc'], 'pid': 2642, 'results': 0} For administrative tasks such as starting/stopping backends authentication is required. Therefore ECSpooler ships with a password file ('etc/passwd') containing a user "root" with default password "bazquux". See the ECSpooler documentation if you would like to add/change users and passwords. Testing a Haskell program with the Haskell QuickCheck backend requires at least one QuickCheck property, e.g.,:: prop_RevRev xs = reverse (rev xs) == xs where types = xs::[Int] Support For questions and discussions about backends, please join the "eduComponents mailing list":https://listserv.uni-magdeburg.de/mailman/listinfo/educomponents. Credits The Haskell QuickCheck backend was written by "Mario Amelung":mailto:mario.amelung@gmx.de. License The Haskell QuickCheck backend is licensed under the "GPL":http://opensource.org/licenses/gpl-license. Copyright © 2007-2011 Otto-von-Guericke-Universität Magdeburg The Haskell QuickCheck backend is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The Haskell QuickCheck backend is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with ECSpooler; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA