py$(PYV): commands[0]> python -m zope.testrunner --test-path=src -vv
Running tests at level 1
Running zope.testrunner.layer.UnitTests tests:
  Set up zope.testrunner.layer.UnitTests.
  Running:
 test_empty (zope.event.tests.Test_notify)
 test_not_empty (zope.event.tests.Test_notify)
 classhandler (zope.event)
  Ran 3 tests with 0 failures, 0 errors and 0 skipped.
Tearing down left over layers:
  Tear down zope.testrunner.layer.UnitTests.
  py$(PYV): OK
  congratulations :)