Well after about 2 hours of head desking I have I got the above to all work nicely together.
Firstly you need to install all the prerequisites. If you are using you can install most of these though apt-get. I assume you have LAMP set up locally and you will be testing on this
sudo apt-get install php5-dev php-pear php5-cli php5-xdebug phpunit
This will install a bunch of stuff you will need. If you want to install from source feel free.