Until now, there really hasn't been a way of testing Traq other than installing and using it.
With Traq 4.0.0 almost ready for alpha testing, and the framework it uses, Avalon 2.0.0, in a stable working state. I decided to resume the work I started on a testing framework for Avalon.
Traq 4.0.0 now contains tests, and the results the said tests can be viewed on the Traq Travis-CI page.
Over the next few weeks, more tests will be added. This will greatly increase the development speed of Traq 4.0.0 and future versions as well as vastly reduce the possibility of bugs creeping in.