You can simply install Eclipse and use it just for Ant! If you install Eclipse - then it has Ant built in:
Eclipse - built in:
Unit Test Framework for Ant Tasks AntUnit borrows ideas from JUnit 3.x and the <junit> task. It provides a task that runs build files as unit tests as well as a number of assertion tasks to support the idea.
Also see Additional Ant Tasks for FTP, Email, etc.
My ColdFusion Meetup Introduction To Ant Presentation