### Question:
AAICreateTasks { public void createCustomer(BuildingBlockExecution execution) throws Exception { try { Customer customer = execution.getGeneralBuildingBlock().getCustomer(); aaiVpnBindingResources.createCustomer(customer); } catch (Exception ex) { exceptionUtil.buildAndThrowWorkflowException(execution, 7000, ex); } }  void createServiceInstance(BuildingBlockExecution execution); void createServiceSubscription(BuildingBlockExecution execution); void createProject(BuildingBlockExecution execution); void createOwningEntity(BuildingBlockExecution execution); void createVnf(BuildingBlockExecution execution); void createPnf(BuildingBlockExecution execution); void createPlatformForNetwork(BuildingBlockExecution execution); void createPlatform(BuildingBlockExecution execution); List<String> splitCDL(String str); void createLineOfBusiness(BuildingBlockExecution execution); void createLineOfBusinessForNetwork(BuildingBlockExecution execution); void createVolumeGroup(BuildingBlockExecution execution); void createVfModule(BuildingBlockExecution execution); void connectVfModuleToVolumeGroup(BuildingBlockExecution execution); void createNetwork(BuildingBlockExecution execution); void createCustomer(BuildingBlockExecution execution); void createNetworkCollection(BuildingBlockExecution execution); void createNetworkCollectionInstanceGroup(BuildingBlockExecution execution); void connectNetworkToTenant(BuildingBlockExecution execution); void connectNetworkToCloudRegion(BuildingBlockExecution execution); void connectVnfToCloudRegion(BuildingBlockExecution execution); void connectVnfToTenant(BuildingBlockExecution execution); void connectNetworkToNetworkCollectionServiceInstance(BuildingBlockExecution execution); void connectNetworkToNetworkCollectionInstanceGroup(BuildingBlockExecution execution); void createConfiguration(BuildingBlockExecution execution); void createInstanceGroupVnf(BuildingBlockExecution execution); void createNetworkPolicies(BuildingBlockExecution execution);  }### Answer:
@Test public void createCustomerTest() throws Exception { doNothing().when(aaiVpnBindingResources).createCustomer(customer); aaiCreateTasks.createCustomer(execution); verify(aaiVpnBindingResources, times(1)).createCustomer(customer); }
@Test public void createCustomerExceptionTest() throws Exception { expectedException.expect(BpmnError.class); doThrow(RuntimeException.class).when(aaiVpnBindingResources).createCustomer(customer); aaiCreateTasks.createCustomer(execution); }