Both Player itself and addons as a whole are subject to specific testing and building process. To be more precise, either of them can be built without successfully passing the test phase. Player itself testing is standard Java unit testing. When it comes to Addons, it needs some workspace prepared by developers.
Step 1: Setting build properties
Make a copy of build-example.properties file and name it build.properties. Next, change path to Google Web Toolkit SDK in newly created file accordingly to your local setup.
Step 2: Running jsTestDriver server
java -jar addons/tools/JsTestDriver.jar --port 9876
When server is up and running, you can open your browser and go to the following URL:
Step 3: Running build
Type ant in command line to run the default build target which includes testing all Player components. If the build irun is successful, you are ready to work with Player!