Travis CI is a service where open source software can run tests automatically on commits. It hooks into github in a silky smooth way.
If you’re developing a Varnish module (VMOD), you probably have started out with our libvmod-example package. It has all the automake magic you need, as well as some simple test cases to test your vmod. Given that you’ve written som varnishtest testcases for it (you really should), you now can get travis to run them as well!
I’ve put a small recipe for this into the libvmod-example package.