Haskell Titan is a testing and debugging system for reactive, time-varying and interactive software.
It is built on the principles of Functional Reactive Programming, although it's ideas can be applied to other time-based abstractions.
Haskell Titan is composed of two parts: testing facilities and debugging facilities.
The testing facilities allow you to: 1) describe and test temporal unit tests, and 2) test FRP programs using QuickCheck (both using real traces or unit tests)
The debugging facilities allow you to: 1) record and replay FRP programs in a referentially transparent manner and 2) debug programs as you run them.
Part of the testing facilities have been introduced in Yampa's repository directly, and you can find them at:
https://github.com/ivanperez-keera/Yampa
In this repo you will find:
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An extension of Yampa to run programs recording their input and debugging them.
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An interactive debugging GUI to connect to a running Yampa program and control it remotely.
It's easier to get started with an example:
$ git clone https://github.com/keera-studios/haskell-titan
$ cd haskell-titan
$ git clone https://github.com/ivanperez-keera/Yampa
$ cabal sandbox init
$ cabal install Yampa/ -fexpose-core
$ cabal install -fexamples titan-yampa-debugger/
$ cabal install titan-gui/
$ ./.cabal-sandbox/bin/titan-gui &
$ ./.cabal-sandbox/bin/titan-yampa-debugger-example-bouncing-ball
You'll need GTK with glade installed. On Ubuntu you can:
$ apt-get install libglade2-dev
Please, send pull requests and file bugs.
If you are considering to do something similar for a different FRP implementation, please consider adding a new backend for this project so that we can join efforts. That way our efforts will be more likely to help you, and yours will also help us. There's always some extra effort from trying to collaborate with others, but it's totally worth it :)
This software is the Copyright of Keera Studios Ltd. It is released under GPL-3 license.
If you find this license too restrictive for the environment where you need to use Haskell Titan or to create an extension, please contact us at support@keera.co.uk and provide details about your case. We may be able to grant an exception.