The download contains two Polarion plug-ins as Eclipse project.
To use the test runner in your projects import these plug-ins into your Eclipse Workspace (File > Import > Existing Projects into Workspace: Select achive file).
Writing JUnit tests for the testrunner
Define your Test Cases in a separate plug-in (named e.g. <you plug-in>.tests) to keep the test code separated from the production code.
You should write your tests as JUnit 4 tests, JUnit 3 tests could work too, but that was never tested.
Using an alternative test runner (with the @RunWith annotation) that changes the test hierarchy could be problematic as the testrunner expects test methods as direct children of the test class. The only alternative test runner explicitly supported is org.junit.runners.Parameterized.
Test suites are not supported.
You have to register your Test Cases for the test runner to find themin a GuiceModule:
1. Create a new class that extends com.polarion.synchronizer.proxy.jira.tests.GuiceModule in your test plug-in.
2. Add Guice-Modules: <Qualified Name of the Guice Module> to META-INF/manifest.mf.
3. Register your test classes in the configure() metho of the new GuiceModule
Multibinder<Class> testsBinder = Multibinder.newSetBinder(binder(), Class.class,Tests.class);
Start Polarion from Eclipse (see SDK for instructions how to do that) preferably use Debug and not Run.
Point your browser to http://localhost/polarion/testrunner.
Select the tests you want to execute and hit Execute Tests.
Sometimes changes will not be synchronized into the running Polarion instance without a warning.