I had a bunch of trouble getting ScalaTest working and integrated with Ant. To save myself the trouble in the future (and incidentally maybe help someone else) I've created a sample Scala project that already has everything set up. You can download it, and right away run "ant" to build, "ant test" to run the tests, "ant run" to run the program, and "ant doc" to generate scaladocs.
You can get the project on GitHub. It distributes its own copy of Scala and ScalaTest. All you need is Java and Ant working from the command line. If you don't know how to add java and ant to your path so it can be used from the command line (I'm talking to you Windows people), I leave you to Google.
I'm pretty displeased with Ant, especially for Scala. I'm planning to switch to Buildr or SBT soon. But until then I'll keep this project up to date.
