All you need to do is check out this repository as a submodule of your CodeIgniter 2.1.0 project. The recommended location is into a directory called tests inside your application directory, wherever that may be. For me (YMMV), that means I'd run the command from my CI project directory:

$ git submodule add git://github.com/redvel/PHPUnit-for-CodeIgniter.git application/tests

To test and make sure everything is set up OK, go to your new tests directory on the command line and enter phpunit. If all is OK, it should show that you are failing one test.

OPTIONAL: I like to add a symlink to application/tests/phpunit.xml inside my project's root directory, so I can just call phpunit from the command line right there at the project root. If you do this, there's no need to update any paths or anything from inside the phpunit XML file; PHPUnit is smart enough to interpret the symlink and make sure all the references are correct. So again using my own environment as an example, to do this I would run the following from my project directory:

$ ln -s application/tests/phpunit.xml phpunit.xml

The one-and-only environment I have ever tested this on is:

• Mac OS X Lion
• PHP 5.3.6 cli
• PHPUnit 3.5.14
• CodeIgniter 2.1.0

Please note that you'll almost certainly have database problems if the command line PHP executable is not the same as the one you're using on your development server. For instance, if you use MAMP as your development server, but your CLI PHP executable is at /usr/bin/php, this will likely cause a database issue.

The right way to do this is to configure your PATH to use the same PHP (and Pear, PHPUnit, etc.) executables as exist in your development server's environment.

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