@Test
 public void findPrimaryConnection_afterRemove() {
   insertFacebookConnection();
   insertFacebookConnection2();
   // 9 is the providerUserId of the first Facebook connection
   connectionRepository.removeConnection(new ConnectionKey("facebook", "9"));
   assertEquals(1, connectionRepository.findConnections(TestFacebookApi.class).size());
   assertNotNull(connectionRepository.findPrimaryConnection(TestFacebookApi.class));
 }