"Testing: Early, Often and Automated" (Extreme Programmin Explained by KENT BECK)
The PDT team has accepted the XP () two principles to increase the cost-effectiveness of testing: double checking and the Defect Cost Increase.
We release the "PDT test framework" that helps us write unit tests for PDT in a very fast way.
"The sooner you find a defect, the cheaper it is to fix".
- PDT Test Framework Tutorial - 
Unit Test Reports
Nightyly build reports include unit test results, the reports are locted under
/tools/php/downloads/reports/ folder, if you want to access one of the reports use: