A little tip from the trenches (-:. I use the Ansi Console plugin in EclipseFP to be able to see a nice color output from my Haskell executable runs.
For example, the Tasty example:
Works also for Yesod applications, etc.
Note that some support for Tasty is being added in EclipseFP 2.6.3, to at least provide some templates for the cabal test-suite section and test modules. I'm not too sure if it's worth to develop a runner for it, since contrary to HTF we won't have a link to the source, so the standard output is probably nice enough.
Happy Haskell Hacking!