restconf/sal-rest-connector/src/test/java/org/opendaylight/controller/sal/restconf/impl/test/BrokerFacadeTest.java

   1 /*
   2  * Copyright (c) 2014, 2015 Brocade Communications Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.controller.sal.restconf.impl.test;
  10
  11 import static org.junit.Assert.assertEquals;
  12 import static org.junit.Assert.assertFalse;
  13 import static org.junit.Assert.assertNotNull;
  14 import static org.junit.Assert.assertSame;
  15 import static org.junit.Assert.assertTrue;
  16 import static org.junit.Assert.fail;
  17 import static org.mockito.Matchers.any;
  18 import static org.mockito.Matchers.eq;
  19 import static org.mockito.Mockito.doReturn;
  20 import static org.mockito.Mockito.inOrder;
  21 import static org.mockito.Mockito.mock;
  22 import static org.mockito.Mockito.times;
  23 import static org.mockito.Mockito.verify;
  24 import static org.mockito.Mockito.verifyNoMoreInteractions;
  25 import static org.mockito.Mockito.when;
  26
  27 import com.google.common.base.Optional;
  28 import com.google.common.collect.Lists;
  29 import com.google.common.util.concurrent.CheckedFuture;
  30 import com.google.common.util.concurrent.Futures;
  31 import java.util.concurrent.Future;
  32 import org.junit.Before;
  33 import org.junit.Test;
  34 import org.mockito.InOrder;
  35 import org.mockito.Mock;
  36 import org.mockito.Mockito;
  37 import org.mockito.MockitoAnnotations;
  38 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
  39 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  40 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  41 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  42 import org.opendaylight.controller.md.sal.dom.api.DOMDataBroker;
  43 import org.opendaylight.controller.md.sal.dom.api.DOMDataChangeListener;
  44 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadOnlyTransaction;
  45 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadWriteTransaction;
  46 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
  47 import org.opendaylight.controller.md.sal.dom.api.DOMMountPoint;
  48 import org.opendaylight.controller.md.sal.dom.api.DOMNotificationService;
  49 import org.opendaylight.controller.md.sal.dom.api.DOMRpcException;
  50 import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
  51 import org.opendaylight.controller.md.sal.dom.api.DOMRpcService;
  52 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
  53 import org.opendaylight.netconf.sal.restconf.impl.BrokerFacade;
  54 import org.opendaylight.netconf.sal.restconf.impl.ControllerContext;
  55 import org.opendaylight.netconf.sal.restconf.impl.InstanceIdentifierContext;
  56 import org.opendaylight.netconf.sal.restconf.impl.PatchContext;
  57 import org.opendaylight.netconf.sal.restconf.impl.PatchStatusContext;
  58 import org.opendaylight.netconf.sal.restconf.impl.PutResult;
  59 import org.opendaylight.netconf.sal.restconf.impl.RestconfDocumentedException;
  60 import org.opendaylight.netconf.sal.restconf.impl.RestconfError;
  61 import org.opendaylight.netconf.sal.restconf.impl.RestconfError.ErrorTag;
  62 import org.opendaylight.netconf.sal.restconf.impl.RestconfError.ErrorType;
  63 import org.opendaylight.netconf.sal.streams.listeners.ListenerAdapter;
  64 import org.opendaylight.netconf.sal.streams.listeners.NotificationListenerAdapter;
  65 import org.opendaylight.netconf.sal.streams.listeners.Notificator;
  66 import org.opendaylight.restconf.handlers.SchemaContextHandler;
  67 import org.opendaylight.restconf.handlers.TransactionChainHandler;
  68 import org.opendaylight.yang.gen.v1.urn.sal.restconf.event.subscription.rev140708.NotificationOutputTypeGrouping.NotificationOutputType;
  69 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  70 import org.opendaylight.yangtools.yang.common.QName;
  71 import org.opendaylight.yangtools.yang.common.RpcError;
  72 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  73 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  74 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  75 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  76 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
  77 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  78 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  79
  80 /**
  81  * Unit tests for BrokerFacade.
  82  *
  83  * @author Thomas Pantelis
  84  */
  85 public class BrokerFacadeTest {
  86
  87     @Mock
  88     private DOMDataBroker domDataBroker;
  89     @Mock
  90     private DOMNotificationService domNotification;
  91     @Mock
  92     private DOMRpcService mockRpcService;
  93     @Mock
  94     private DOMMountPoint mockMountInstance;
  95     @Mock
  96     private DOMDataReadOnlyTransaction readTransaction;
  97     @Mock
  98     private DOMDataWriteTransaction writeTransaction;
  99     @Mock
 100     private DOMDataReadWriteTransaction rwTransaction;
 101
 102     private final BrokerFacade brokerFacade = BrokerFacade.getInstance();
 103     private final NormalizedNode<?, ?> dummyNode = createDummyNode("test:module", "2014-01-09", "interfaces");
 104     private final CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> dummyNodeInFuture =
 105             wrapDummyNode(this.dummyNode);
 106     private final QName qname = TestUtils.buildQName("interfaces","test:module", "2014-01-09");
 107     private final SchemaPath type = SchemaPath.create(true, this.qname);
 108     private final YangInstanceIdentifier instanceID = YangInstanceIdentifier.builder().node(this.qname).build();
 109
 110     @Before
 111     public void setUp() throws Exception {
 112         MockitoAnnotations.initMocks(this);
 113         this.brokerFacade.setDomDataBroker(this.domDataBroker);
 114         this.brokerFacade.setDomNotificationService(this.domNotification);
 115         this.brokerFacade.setRpcService(this.mockRpcService);
 116         when(this.domDataBroker.newReadOnlyTransaction()).thenReturn(this.readTransaction);
 117         when(this.domDataBroker.newWriteOnlyTransaction()).thenReturn(this.writeTransaction);
 118         when(this.domDataBroker.newReadWriteTransaction()).thenReturn(this.rwTransaction);
 119
 120         ControllerContext.getInstance().setSchemas(TestUtils.loadSchemaContext("/full-versions/test-module"));
 121     }
 122
 123     private static CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> wrapDummyNode(
 124             final NormalizedNode<?, ?> dummyNode) {
 125         return Futures.immediateCheckedFuture(Optional.<NormalizedNode<?, ?>>of(dummyNode));
 126     }
 127
 128     private static CheckedFuture<Boolean, ReadFailedException> wrapExistence(final Boolean exists) {
 129         return Futures.immediateCheckedFuture(exists);
 130     }
 131
 132     /**
 133      * Value of this node shouldn't be important for testing purposes.
 134      */
 135     private static NormalizedNode<?, ?> createDummyNode(final String namespace, final String date,
 136             final String localName) {
 137         return Builders.containerBuilder()
 138                 .withNodeIdentifier(new NodeIdentifier(QName.create(namespace, date, localName))).build();
 139     }
 140
 141     @Test
 142     public void testReadConfigurationData() {
 143         when(this.readTransaction.read(any(LogicalDatastoreType.class), any(YangInstanceIdentifier.class))).thenReturn(
 144                 this.dummyNodeInFuture);
 145
 146         final NormalizedNode<?, ?> actualNode = this.brokerFacade.readConfigurationData(this.instanceID);
 147
 148         assertSame("readConfigurationData", this.dummyNode, actualNode);
 149     }
 150
 151     @Test
 152     public void testReadOperationalData() {
 153         when(this.readTransaction.read(any(LogicalDatastoreType.class), any(YangInstanceIdentifier.class))).thenReturn(
 154                 this.dummyNodeInFuture);
 155
 156         final NormalizedNode<?, ?> actualNode = this.brokerFacade.readOperationalData(this.instanceID);
 157
 158         assertSame("readOperationalData", this.dummyNode, actualNode);
 159     }
 160
 161     @Test(expected = RestconfDocumentedException.class)
 162     public void testReadOperationalDataWithNoDataBroker() {
 163         this.brokerFacade.setDomDataBroker(null);
 164
 165         this.brokerFacade.readOperationalData(this.instanceID);
 166     }
 167
 168     @Test
 169     public void test503() throws Exception {
 170         final RpcError error = RpcResultBuilder.newError(
 171                 RpcError.ErrorType.TRANSPORT,
 172                 ErrorTag.RESOURCE_DENIED.getTagValue(),
 173                 "Master is down. Please try again.");
 174         final ReadFailedException exception503 = new ReadFailedException("Read from transaction failed", error);
 175         doReturn(Futures.immediateFailedCheckedFuture(exception503))
 176                 .when(readTransaction).read(any(LogicalDatastoreType.class), any(YangInstanceIdentifier.class));
 177         try {
 178             brokerFacade.readConfigurationData(this.instanceID, "explicit");
 179             fail("This test should fail.");
 180         } catch (final RestconfDocumentedException e) {
 181             assertEquals("getErrorTag", ErrorTag.RESOURCE_DENIED_TRANSPORT, e.getErrors().get(0).getErrorTag());
 182             assertEquals("getErrorType", ErrorType.TRANSPORT, e.getErrors().get(0).getErrorType());
 183             assertEquals("getErrorMessage", "Master is down. Please try again.",
 184                     e.getErrors().get(0).getErrorMessage());
 185         }
 186     }
 187
 188     @Test
 189     public void testInvokeRpc() throws Exception {
 190         final DOMRpcResult expResult = mock(DOMRpcResult.class);
 191         final CheckedFuture<DOMRpcResult, DOMRpcException> future = Futures.immediateCheckedFuture(expResult);
 192         when(this.mockRpcService.invokeRpc(this.type, this.dummyNode)).thenReturn(future);
 193
 194         final CheckedFuture<DOMRpcResult, DOMRpcException> actualFuture = this.brokerFacade
 195                 .invokeRpc(this.type, this.dummyNode);
 196         assertNotNull("Future is null", actualFuture);
 197         final DOMRpcResult actualResult = actualFuture.get();
 198         assertSame("invokeRpc", expResult, actualResult);
 199     }
 200
 201     @Test(expected = RestconfDocumentedException.class)
 202     public void testInvokeRpcWithNoConsumerSession() {
 203         brokerFacade.setDomDataBroker(null);
 204         this.brokerFacade.invokeRpc(this.type, this.dummyNode);
 205     }
 206
 207     @Test
 208     public void testCommitConfigurationDataPut() throws Exception {
 209         @SuppressWarnings("unchecked")
 210         final CheckedFuture<Void, TransactionCommitFailedException> expFuture = mock(CheckedFuture.class);
 211         when(this.rwTransaction.submit()).thenReturn(expFuture);
 212
 213         final Optional<NormalizedNode<?, ?>> optionalMock = mock(Optional.class);
 214         when(optionalMock.get()).thenReturn(null);
 215
 216         final CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> readFuture = Futures
 217                 .immediateCheckedFuture(optionalMock);
 218         when(this.rwTransaction.read(LogicalDatastoreType.CONFIGURATION, this.instanceID)).thenReturn(readFuture);
 219
 220         final PutResult result = this.brokerFacade.commitConfigurationDataPut(mock(SchemaContext.class),
 221                 this.instanceID, this.dummyNode, null, null);
 222
 223         final Future<Void> actualFuture = result.getFutureOfPutData();
 224
 225         assertSame("commitConfigurationDataPut", expFuture, actualFuture);
 226
 227         final InOrder inOrder = inOrder(this.domDataBroker, this.rwTransaction);
 228         inOrder.verify(this.domDataBroker).newReadWriteTransaction();
 229         inOrder.verify(this.rwTransaction).put(LogicalDatastoreType.CONFIGURATION, this.instanceID, this.dummyNode);
 230         inOrder.verify(this.rwTransaction).submit();
 231     }
 232
 233     @Test
 234     public void testCommitConfigurationDataPost() {
 235         @SuppressWarnings("unchecked")
 236         final CheckedFuture<Void, TransactionCommitFailedException> expFuture = mock(CheckedFuture.class);
 237
 238         when(this.rwTransaction.exists(LogicalDatastoreType.CONFIGURATION, this.instanceID))
 239                 .thenReturn(wrapExistence(false));
 240
 241         when(this.rwTransaction.submit()).thenReturn(expFuture);
 242
 243         final CheckedFuture<Void, TransactionCommitFailedException> actualFuture = this.brokerFacade
 244                 .commitConfigurationDataPost(mock(SchemaContext.class), this.instanceID, this.dummyNode, null, null);
 245
 246         assertSame("commitConfigurationDataPost", expFuture, actualFuture);
 247
 248         final InOrder inOrder = inOrder(this.domDataBroker, this.rwTransaction);
 249         inOrder.verify(this.domDataBroker).newReadWriteTransaction();
 250         inOrder.verify(this.rwTransaction).exists(LogicalDatastoreType.CONFIGURATION, this.instanceID);
 251         inOrder.verify(this.rwTransaction).put(LogicalDatastoreType.CONFIGURATION, this.instanceID, this.dummyNode);
 252         inOrder.verify(this.rwTransaction).submit();
 253     }
 254
 255     @Test(expected = RestconfDocumentedException.class)
 256     public void testCommitConfigurationDataPostAlreadyExists() {
 257         final CheckedFuture<Boolean, ReadFailedException> successFuture = Futures.immediateCheckedFuture(Boolean.TRUE);
 258         when(this.rwTransaction.exists(eq(LogicalDatastoreType.CONFIGURATION), any(YangInstanceIdentifier.class)))
 259                 .thenReturn(successFuture);
 260         try {
 261             // Schema context is only necessary for ensuring parent structure
 262             this.brokerFacade.commitConfigurationDataPost((SchemaContext) null, this.instanceID, this.dummyNode, null,
 263                     null);
 264         } catch (final RestconfDocumentedException e) {
 265             assertEquals("getErrorTag", RestconfError.ErrorTag.DATA_EXISTS, e.getErrors().get(0).getErrorTag());
 266             throw e;
 267         }
 268     }
 269
 270     /**
 271      * Positive test of delete operation when data to delete exits. Returned value and order of steps are validated.
 272      */
 273     @Test
 274     public void testCommitConfigurationDataDelete() throws Exception {
 275         // assume that data to delete exists
 276         prepareDataForDelete(true);
 277
 278         // expected result
 279         @SuppressWarnings("unchecked")
 280         final CheckedFuture<Void, TransactionCommitFailedException> expFuture = mock(CheckedFuture.class);
 281         when(this.rwTransaction.submit()).thenReturn(expFuture);
 282
 283         // test
 284         final CheckedFuture<Void, TransactionCommitFailedException> actualFuture = this.brokerFacade
 285                 .commitConfigurationDataDelete(this.instanceID);
 286
 287         // verify result and interactions
 288         assertSame("commitConfigurationDataDelete", expFuture, actualFuture);
 289
 290         // check exists, delete, submit
 291         final InOrder inOrder = inOrder(this.domDataBroker, this.rwTransaction);
 292         inOrder.verify(this.rwTransaction).exists(LogicalDatastoreType.CONFIGURATION, this.instanceID);
 293         inOrder.verify(this.rwTransaction).delete(LogicalDatastoreType.CONFIGURATION, this.instanceID);
 294         inOrder.verify(this.rwTransaction).submit();
 295     }
 296
 297     /**
 298      * Negative test of delete operation when data to delete does not exist. Error 404 should be returned.
 299      */
 300     @Test
 301     public void testCommitConfigurationDataDeleteNoData() throws Exception {
 302         // assume that data to delete does not exist
 303         prepareDataForDelete(false);
 304
 305         // try to delete and expect 404 error
 306         try {
 307             this.brokerFacade.commitConfigurationDataDelete(this.instanceID);
 308             fail("Delete operation should fail due to missing data");
 309         } catch (final RestconfDocumentedException e) {
 310             assertEquals(ErrorType.PROTOCOL, e.getErrors().get(0).getErrorType());
 311             assertEquals(ErrorTag.DATA_MISSING, e.getErrors().get(0).getErrorTag());
 312             assertEquals(404, e.getErrors().get(0).getErrorTag().getStatusCode());
 313         }
 314     }
 315
 316     /**
 317      * Prepare conditions to test delete operation. Data to delete exists or does not exist according to value of
 318      * {@code assumeDataExists} parameter.
 319      * @param assumeDataExists boolean to assume if data exists
 320      */
 321     private void prepareDataForDelete(final boolean assumeDataExists) {
 322         when(this.rwTransaction.exists(LogicalDatastoreType.CONFIGURATION, this.instanceID))
 323                 .thenReturn(Futures.immediateCheckedFuture(new Boolean(assumeDataExists)));
 324     }
 325
 326     @Test
 327     public void testRegisterToListenDataChanges() {
 328         final ListenerAdapter listener = Notificator.createListener(this.instanceID, "stream",
 329                 NotificationOutputType.XML);
 330
 331         @SuppressWarnings("unchecked")
 332         final ListenerRegistration<DOMDataChangeListener> mockRegistration = mock(ListenerRegistration.class);
 333
 334         when(this.domDataBroker.registerDataChangeListener(any(LogicalDatastoreType.class), eq(this.instanceID),
 335                 eq(listener), eq(DataChangeScope.BASE))).thenReturn(mockRegistration);
 336
 337         this.brokerFacade.registerToListenDataChanges(
 338                 LogicalDatastoreType.CONFIGURATION, DataChangeScope.BASE, listener);
 339
 340         verify(this.domDataBroker).registerDataChangeListener(
 341                 LogicalDatastoreType.CONFIGURATION, this.instanceID, listener, DataChangeScope.BASE);
 342
 343         assertEquals("isListening", true, listener.isListening());
 344
 345         this.brokerFacade.registerToListenDataChanges(
 346                 LogicalDatastoreType.CONFIGURATION, DataChangeScope.BASE, listener);
 347         verifyNoMoreInteractions(this.domDataBroker);
 348     }
 349
 350     /**
 351      * Create, register, close and remove notification listener.
 352      */
 353     @Test
 354     public void testRegisterToListenNotificationChanges() throws Exception {
 355         // create test notification listener
 356         final String identifier = "create-notification-stream/toaster:toastDone";
 357         final SchemaPath path = SchemaPath.create(true,
 358                 QName.create("http://netconfcentral.org/ns/toaster", "2009-11-20", "toastDone"));
 359         Notificator.createNotificationListener(Lists.newArrayList(path), identifier, "XML");
 360         final NotificationListenerAdapter listener = Notificator.getNotificationListenerFor(identifier).get(0);
 361
 362         // mock registration
 363         final ListenerRegistration<NotificationListenerAdapter> registration = mock(ListenerRegistration.class);
 364         when(this.domNotification.registerNotificationListener(listener, listener.getSchemaPath()))
 365                 .thenReturn(registration);
 366
 367         // test to register listener for the first time
 368         this.brokerFacade.registerToListenNotification(listener);
 369         assertEquals("Registration was not successful", true, listener.isListening());
 370
 371         // try to register for the second time
 372         this.brokerFacade.registerToListenNotification(listener);
 373         assertEquals("Registration was not successful", true, listener.isListening());
 374
 375         // registrations should be invoked only once
 376         verify(this.domNotification, times(1)).registerNotificationListener(listener, listener.getSchemaPath());
 377
 378         final DOMTransactionChain transactionChain = mock(DOMTransactionChain.class);
 379         final DOMDataWriteTransaction wTx = mock(DOMDataWriteTransaction.class);
 380         final CheckedFuture<Void, TransactionCommitFailedException> checked = Futures.immediateCheckedFuture(null);
 381         when(wTx.submit()).thenReturn(checked);
 382         when(transactionChain.newWriteOnlyTransaction()).thenReturn(wTx);
 383         final TransactionChainHandler transactionChainHandler = new TransactionChainHandler(transactionChain);
 384         final SchemaContextHandler schemaHandler = Mockito.mock(SchemaContextHandler.class);
 385         final SchemaContext schCtx = TestUtils.loadSchemaContext("/modules");
 386         when(schemaHandler.get()).thenReturn(schCtx);
 387         listener.setCloseVars(transactionChainHandler, schemaHandler);
 388         // close and remove test notification listener
 389         listener.close();
 390         Notificator.removeListenerIfNoSubscriberExists(listener);
 391     }
 392
 393     /**
 394      * Test Patch method on the server with no data.
 395      */
 396     @Test
 397     @SuppressWarnings("unchecked")
 398     public void testPatchConfigurationDataWithinTransactionServer() throws Exception {
 399         final PatchContext patchContext = mock(PatchContext.class);
 400         final InstanceIdentifierContext identifierContext = mock(InstanceIdentifierContext.class);
 401         final CheckedFuture<Void, TransactionCommitFailedException> expFuture = Futures.immediateCheckedFuture(null);
 402
 403         when(patchContext.getData()).thenReturn(Lists.newArrayList());
 404         when(patchContext.getInstanceIdentifierContext()).thenReturn(identifierContext);
 405
 406         // no mount point
 407         when(identifierContext.getMountPoint()).thenReturn(null);
 408
 409         when(this.rwTransaction.submit()).thenReturn(expFuture);
 410
 411         final PatchStatusContext status = this.brokerFacade.patchConfigurationDataWithinTransaction(patchContext);
 412
 413         // assert success
 414         assertTrue("Patch operation should be successful on server", status.isOk());
 415     }
 416
 417     /**
 418      * Test Patch method on mounted device with no data.
 419      */
 420     @Test
 421     @SuppressWarnings("unchecked")
 422     public void testPatchConfigurationDataWithinTransactionMount() throws Exception {
 423         final PatchContext patchContext = mock(PatchContext.class);
 424         final InstanceIdentifierContext identifierContext = mock(InstanceIdentifierContext.class);
 425         final DOMMountPoint mountPoint = mock(DOMMountPoint.class);
 426         final DOMDataBroker mountDataBroker = mock(DOMDataBroker.class);
 427         final DOMDataReadWriteTransaction transaction = mock(DOMDataReadWriteTransaction.class);
 428         final CheckedFuture<Void, TransactionCommitFailedException> expFuture = Futures.immediateCheckedFuture(null);
 429
 430         when(patchContext.getData()).thenReturn(Lists.newArrayList());
 431         when(patchContext.getInstanceIdentifierContext()).thenReturn(identifierContext);
 432
 433         // return mount point with broker
 434         when(identifierContext.getMountPoint()).thenReturn(mountPoint);
 435         when(mountPoint.getService(DOMDataBroker.class)).thenReturn(Optional.of(mountDataBroker));
 436         when(mountDataBroker.newReadWriteTransaction()).thenReturn(transaction);
 437         when(transaction.submit()).thenReturn(expFuture);
 438
 439         final PatchStatusContext status = this.brokerFacade.patchConfigurationDataWithinTransaction(patchContext);
 440
 441         // assert success
 442         assertTrue("Patch operation should be successful on mounted device", status.isOk());
 443     }
 444
 445     /**
 446      * Negative test for Patch operation when mounted device does not support {@link DOMDataBroker service.}
 447      * Patch operation should fail with global error.
 448      */
 449     @Test
 450     @SuppressWarnings("unchecked")
 451     public void testPatchConfigurationDataWithinTransactionMountFail() throws Exception {
 452         final PatchContext patchContext = mock(PatchContext.class);
 453         final InstanceIdentifierContext identifierContext = mock(InstanceIdentifierContext.class);
 454         final DOMMountPoint mountPoint = mock(DOMMountPoint.class);
 455         final DOMDataBroker mountDataBroker = mock(DOMDataBroker.class);
 456         final DOMDataReadWriteTransaction transaction = mock(DOMDataReadWriteTransaction.class);
 457         final CheckedFuture<Void, TransactionCommitFailedException> expFuture = Futures.immediateCheckedFuture(null);
 458
 459         when(patchContext.getData()).thenReturn(Lists.newArrayList());
 460         when(patchContext.getInstanceIdentifierContext()).thenReturn(identifierContext);
 461         when(identifierContext.getMountPoint()).thenReturn(mountPoint);
 462
 463         // missing broker on mounted device
 464         when(mountPoint.getService(DOMDataBroker.class)).thenReturn(Optional.absent());
 465
 466         when(mountDataBroker.newReadWriteTransaction()).thenReturn(transaction);
 467         when(transaction.submit()).thenReturn(expFuture);
 468
 469         final PatchStatusContext status = this.brokerFacade.patchConfigurationDataWithinTransaction(patchContext);
 470
 471         // assert not successful operation with error
 472         assertNotNull(status.getGlobalErrors());
 473         assertEquals(1, status.getGlobalErrors().size());
 474         assertEquals(ErrorType.APPLICATION, status.getGlobalErrors().get(0).getErrorType());
 475         assertEquals(ErrorTag.OPERATION_FAILED, status.getGlobalErrors().get(0).getErrorTag());
 476
 477         assertFalse("Patch operation should fail on mounted device without Broker", status.isOk());
 478     }
 479 }