On the Blue Parabola blog today there's a look at working with the Zend_Test component of the Zend Framework (from Matthew Turland).
I went to the "tests" directory generated for me by the zf CLI utility to get started. What I found there was three files: application/bootstrap.php, library/bootstrap.php, phpunit.xml They were all completely empty, which didn't really provide much in the way of guidance on how to get started. The Zend_Test documentation is good, but was a bit lacking in that area as well; it really only covers how Zend_Test extends the capabilities of PHPUnit.
Matthew walks you through his process of creating a sample PHPUnit XML configuration file (with a little help), updating your bootstrap to load in paths to the test files and the creation of a sample test case for a MySQL database. He runs a test on the database to compare it to a standardized data set based on an XML file (seed.xml). He also looks briefly at testing controllers, some sample code included for this as well.