The first step is to build mod_wombat per the instructions in 
building-from-subversion.txt.

Once built, replace apache's httpd.conf with test/test_httpd.conf
    You will need to customize the directories listed in test_httpd.conf
    to match your system.

Build and install LuaSocket
    http://www.cs.princeton.edu/~diego/professional/luasocket/
    
    
    
Finally, to run the tests, start apache and run:
    $ cd test
    $ lua ./test.lua