@Test
public void testUpdateAccumuloConfigs() throws Exception {

  EasyMockSupport easyMockSupport = new EasyMockSupport();
  final AmbariManagementController mockAmbariManagementController = easyMockSupport.createNiceMock(AmbariManagementController.class);
  final Clusters mockClusters = easyMockSupport.createStrictMock(Clusters.class);
  final Cluster mockClusterExpected = easyMockSupport.createNiceMock(Cluster.class);
  // We start with no client properties (< 2.2.0).
  final Map<String, String> originalClientProperties = new HashMap<String, String>();
  // And should get the following property on upgrade.
  final Map<String, String> updatedClientProperties = new HashMap<String, String>() {
    {
      put("kerberos.server.primary", "{{bare_accumulo_principal}}");
    }
  };
  
  final Config clientConfig = easyMockSupport.createNiceMock(Config.class);
  final Injector mockInjector = Guice.createInjector(new AbstractModule() {
    @Override
    protected void configure() {
      bind(AmbariManagementController.class).toInstance(mockAmbariManagementController);
      bind(Clusters.class).toInstance(mockClusters);
      bind(EntityManager.class).toInstance(entityManager);
      bind(DBAccessor.class).toInstance(createNiceMock(DBAccessor.class));
      bind(OsFamily.class).toInstance(createNiceMock(OsFamily.class));
    }
  });
  expect(mockAmbariManagementController.getClusters()).andReturn(mockClusters).once();
  expect(mockClusters.getClusters()).andReturn(new HashMap<String, Cluster>() {{
    put("normal", mockClusterExpected);
  }}).once();
  // Enable KERBEROS
  expect(mockClusterExpected.getSecurityType()).andReturn(SecurityType.KERBEROS).once();
  // Mock out our empty original properties
  expect(mockClusterExpected.getDesiredConfigByType("client")).andReturn(clientConfig).atLeastOnce();
  expect(clientConfig.getProperties()).andReturn(originalClientProperties).atLeastOnce();
  UpgradeCatalog220 upgradeCatalog220 = createMockBuilder(UpgradeCatalog220.class)
          .withConstructor(Injector.class)
          .withArgs(mockInjector)
          .addMockedMethod("updateConfigurationPropertiesForCluster", Cluster.class, String.class,
                  Map.class, boolean.class, boolean.class)
          .createMock();
  // Verify that we get this method called with the updated properties
  upgradeCatalog220.updateConfigurationPropertiesForCluster(mockClusterExpected,
          "client", updatedClientProperties, true, false);
  expectLastCall().once();
  // Run it
  easyMockSupport.replayAll();
  replay(upgradeCatalog220);
  upgradeCatalog220.updateAccumuloConfigs();
  easyMockSupport.verifyAll();
}