persistor.writeToFile(repository, conRepository, fos);
ConnectionRepository second = persistor.readConnectionRepository(filename);
int connectionCount2 = second.getAllDescriptor().size();
PBKey defaultKey = second.getStandardPBKeyForJcdAlias(TestHelper.DEF_JCD_ALIAS);
assertNotNull(defaultKey);
assertEquals(TestHelper.DEF_KEY, defaultKey);
assertTrue(connectionCount2 > 0);
assertEquals("read in persisted connection repository should have same number of classes",