Maarten Balliauw has a new post to his site showing you how to execute your unit tests (in this case PHPUnit) when you deploy your instance out to the Windows Azure platform.

When deploying an application to Windows Azure Web Sites, a number of deployment steps are executed. For .NET projects, msbuild is triggered. For node.js applications, a list of dependencies is restored. For PHP applications, files are copied from source control to the actual web root which is served publicly. Wouldn’t it be cool if Windows Azure Web Sites refused to deploy fresh source code whenever unit tests fail? In this post, I’ll show you how.

He creates a super basic script using Silex and writes up a test with some dummy assertions, checking if true equals true. He then steps you through updating the current "deploy.sh" script to add in a call to execute PHPUnit and an "exitWithMessageOnError" statement. This statement kicks it back and causes the deployment to fail when tests don't pass (as seen here).