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

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   3  * Copyright (c) 2014 Brocade Communications Systems, Inc.
   4  *
   5  * This program and the accompanying materials are made available under the
   6  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   7  * and is available at http://www.eclipse.org/legal/epl-v10.html
   8  */
   9 package org.opendaylight.controller.sal.restconf.impl.test;
  10
  11 import static org.junit.Assert.assertEquals;
  12 import static org.junit.Assert.assertNotNull;
  13 import static org.junit.Assert.assertSame;
  14 import static org.junit.Assert.assertTrue;
  15 import static org.junit.Assert.fail;
  16 import static org.mockito.Matchers.any;
  17 import static org.mockito.Matchers.eq;
  18 import static org.mockito.Mockito.mock;
  19 import static org.mockito.Mockito.spy;
  20 import static org.mockito.Mockito.when;
  21 import com.google.common.base.Optional;
  22 import com.google.common.util.concurrent.CheckedFuture;
  23 import com.google.common.util.concurrent.Futures;
  24 import com.google.common.util.concurrent.ListenableFuture;
  25 import java.io.FileNotFoundException;
  26 import java.net.URI;
  27 import java.net.URISyntaxException;
  28 import java.util.Arrays;
  29 import java.util.Collections;
  30 import java.util.HashSet;
  31 import java.util.List;
  32 import java.util.Set;
  33 import javax.ws.rs.core.MultivaluedHashMap;
  34 import javax.ws.rs.core.MultivaluedMap;
  35 import javax.ws.rs.core.UriInfo;
  36 import org.junit.Before;
  37 import org.junit.BeforeClass;
  38 import org.junit.Ignore;
  39 import org.junit.Test;
  40 import org.opendaylight.controller.md.sal.dom.api.DOMMountPoint;
  41 import org.opendaylight.controller.md.sal.dom.api.DOMRpcException;
  42 import org.opendaylight.controller.md.sal.dom.api.DOMRpcImplementationNotAvailableException;
  43 import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
  44 import org.opendaylight.controller.md.sal.dom.spi.DefaultDOMRpcResult;
  45 import org.opendaylight.controller.sal.core.api.RpcProvisionRegistry;
  46 import org.opendaylight.controller.sal.restconf.impl.BrokerFacade;
  47 import org.opendaylight.controller.sal.restconf.impl.ControllerContext;
  48 import org.opendaylight.controller.sal.restconf.impl.InstanceIdentifierContext;
  49 import org.opendaylight.controller.sal.restconf.impl.NormalizedNodeContext;
  50 import org.opendaylight.controller.sal.restconf.impl.RestconfDocumentedException;
  51 import org.opendaylight.controller.sal.restconf.impl.RestconfError;
  52 import org.opendaylight.controller.sal.restconf.impl.RestconfError.ErrorTag;
  53 import org.opendaylight.controller.sal.restconf.impl.RestconfError.ErrorType;
  54 import org.opendaylight.controller.sal.restconf.impl.RestconfImpl;
  55 import org.opendaylight.yangtools.yang.common.QName;
  56 import org.opendaylight.yangtools.yang.common.RpcError;
  57 import org.opendaylight.yangtools.yang.common.RpcResult;
  58 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  59 import org.opendaylight.yangtools.yang.data.api.CompositeNode;
  60 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  61 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  62 import org.opendaylight.yangtools.yang.data.api.schema.LeafNode;
  63 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  64 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
  65 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.DataContainerNodeAttrBuilder;
  66 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.NormalizedNodeAttrBuilder;
  67 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
  68 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
  69 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
  70 import org.opendaylight.yangtools.yang.model.api.Module;
  71 import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
  72 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  73 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  74 import org.opendaylight.yangtools.yang.model.util.SchemaNodeUtils;
  75
  76 public class InvokeRpcMethodTest {
  77
  78     private RestconfImpl restconfImpl = null;
  79     private static ControllerContext controllerContext = null;
  80     private static UriInfo uriInfo;
  81
  82
  83     @BeforeClass
  84     public static void init() throws FileNotFoundException {
  85         final Set<Module> allModules = new HashSet<Module>(TestUtils.loadModulesFrom("/full-versions/yangs"));
  86         allModules.addAll(TestUtils.loadModulesFrom("/invoke-rpc"));
  87         assertNotNull(allModules);
  88         final Module module = TestUtils.resolveModule("invoke-rpc-module", allModules);
  89         assertNotNull(module);
  90         final SchemaContext schemaContext = TestUtils.loadSchemaContext(allModules);
  91         controllerContext = spy(ControllerContext.getInstance());
  92         controllerContext.setSchemas(schemaContext);
  93         uriInfo = mock(UriInfo.class);
  94         final MultivaluedMap<String, String> map = new MultivaluedHashMap<>();
  95         map.put("prettyPrint", Collections.singletonList("true"));
  96         when(uriInfo.getQueryParameters(any(Boolean.class))).thenReturn(map);
  97     }
  98
  99     @Before
 100     public void initMethod() {
 101         restconfImpl = RestconfImpl.getInstance();
 102         restconfImpl.setControllerContext(controllerContext);
 103     }
 104
 105     /**
 106      * Test method invokeRpc in RestconfImpl class tests if composite node as input parameter of method invokeRpc
 107      * (second argument) is wrapped to parent composite node which has QName equals to QName of rpc (resolved from
 108      * string - first argument).
 109      */
 110     @Test
 111     public void invokeRpcMethodTest() {
 112         final ControllerContext contContext = controllerContext;
 113         try {
 114             contContext.findModuleNameByNamespace(new URI("invoke:rpc:module"));
 115         } catch (final URISyntaxException e) {
 116             assertTrue("Uri wasn't created sucessfuly", false);
 117         }
 118
 119         final BrokerFacade mockedBrokerFacade = mock(BrokerFacade.class);
 120
 121         final RestconfImpl restconf = RestconfImpl.getInstance();
 122         restconf.setBroker(mockedBrokerFacade);
 123         restconf.setControllerContext(contContext);
 124
 125         final NormalizedNodeContext payload = prepareDomPayload();
 126
 127         final NormalizedNodeContext rpcResponse = restconf.invokeRpc("invoke-rpc-module:rpc-test", payload, uriInfo);
 128         assertTrue(rpcResponse != null);
 129         assertTrue(rpcResponse.getData() == null);
 130
 131     }
 132
 133     private NormalizedNodeContext prepareDomPayload() {
 134         final SchemaContext schema = controllerContext.getGlobalSchema();
 135         final Module rpcModule = schema.findModuleByName("invoke-rpc-module", null);
 136         assertNotNull(rpcModule);
 137         final QName rpcQName = QName.create(rpcModule.getQNameModule(), "rpc-test");
 138         final QName rpcInputQName = QName.create(rpcModule.getQNameModule(),"input");
 139         final Set<RpcDefinition> setRpcs = rpcModule.getRpcs();
 140         ContainerSchemaNode rpcInputSchemaNode = null;
 141         for (final RpcDefinition rpc : setRpcs) {
 142             if (rpcQName.isEqualWithoutRevision(rpc.getQName())) {
 143                 rpcInputSchemaNode = SchemaNodeUtils.getRpcDataSchema(rpc, rpcInputQName);
 144                 break;
 145             }
 146         }
 147         assertNotNull(rpcInputSchemaNode);
 148
 149         final DataContainerNodeAttrBuilder<NodeIdentifier, ContainerNode> container = Builders.containerBuilder(rpcInputSchemaNode);
 150
 151         final QName contQName = QName.create(rpcModule.getQNameModule(), "cont");
 152         final DataSchemaNode contSchemaNode = rpcInputSchemaNode.getDataChildByName(contQName);
 153         assertTrue(contSchemaNode instanceof ContainerSchemaNode);
 154         final DataContainerNodeAttrBuilder<NodeIdentifier, ContainerNode> contNode = Builders.containerBuilder((ContainerSchemaNode) contSchemaNode);
 155
 156         final QName lfQName = QName.create(rpcModule.getQNameModule(), "lf");
 157         final DataSchemaNode lfSchemaNode = ((ContainerSchemaNode) contSchemaNode).getDataChildByName(lfQName);
 158         assertTrue(lfSchemaNode instanceof LeafSchemaNode);
 159         final LeafNode<Object> lfNode = (Builders.leafBuilder((LeafSchemaNode) lfSchemaNode).withValue("any value")).build();
 160         contNode.withChild(lfNode);
 161         container.withChild(contNode.build());
 162
 163         return new NormalizedNodeContext(new InstanceIdentifierContext(null, rpcInputSchemaNode, null, schema), container.build());
 164     }
 165
 166     @Test
 167     public void testInvokeRpcWithNoPayloadRpc_FailNoErrors() {
 168         final DOMRpcException exception = new DOMRpcImplementationNotAvailableException("testExeption");
 169         final CheckedFuture<DOMRpcResult, DOMRpcException> future = Futures.immediateFailedCheckedFuture(exception);
 170
 171         final BrokerFacade brokerFacade = mock(BrokerFacade.class);
 172
 173         final QName qname = QName.create("(http://netconfcentral.org/ns/toaster?revision=2009-11-20)cancel-toast");
 174         final SchemaPath type = SchemaPath.create(true, qname);
 175
 176         when(brokerFacade.invokeRpc(eq(type), any(NormalizedNode.class))).thenReturn(future);
 177
 178         restconfImpl.setBroker(brokerFacade);
 179
 180         try {
 181             restconfImpl.invokeRpc("toaster:cancel-toast", "", uriInfo);
 182             fail("Expected an exception to be thrown.");
 183         } catch (final RestconfDocumentedException e) {
 184             verifyRestconfDocumentedException(e, 0, ErrorType.APPLICATION, ErrorTag.OPERATION_FAILED,
 185                     Optional.<String> absent(), Optional.<String> absent());
 186         }
 187     }
 188
 189     void verifyRestconfDocumentedException(final RestconfDocumentedException e, final int index,
 190             final ErrorType expErrorType, final ErrorTag expErrorTag, final Optional<String> expErrorMsg,
 191             final Optional<String> expAppTag) {
 192         RestconfError actual = null;
 193         try {
 194             actual = e.getErrors().get(index);
 195         } catch (final ArrayIndexOutOfBoundsException ex) {
 196             fail("RestconfError not found at index " + index);
 197         }
 198
 199         assertEquals("getErrorType", expErrorType, actual.getErrorType());
 200         assertEquals("getErrorTag", expErrorTag, actual.getErrorTag());
 201         assertNotNull("getErrorMessage is null", actual.getErrorMessage());
 202
 203         if (expErrorMsg.isPresent()) {
 204             assertEquals("getErrorMessage", expErrorMsg.get(), actual.getErrorMessage());
 205         }
 206
 207         if (expAppTag.isPresent()) {
 208             assertEquals("getErrorAppTag", expAppTag.get(), actual.getErrorAppTag());
 209         }
 210     }
 211
 212     @Test
 213     public void testInvokeRpcWithNoPayloadRpc_FailWithRpcError() {
 214         final List<RpcError> rpcErrors = Arrays.asList(
 215             RpcResultBuilder.newError( RpcError.ErrorType.TRANSPORT, "bogusTag", "foo" ),
 216             RpcResultBuilder.newWarning( RpcError.ErrorType.RPC, "in-use", "bar",
 217                                          "app-tag", null, null ) );
 218
 219         final DOMRpcResult resutl = new DefaultDOMRpcResult(rpcErrors);
 220         final CheckedFuture<DOMRpcResult, DOMRpcException> future = Futures.immediateCheckedFuture(resutl);
 221
 222         final SchemaPath path = SchemaPath.create(true,
 223                 QName.create("(http://netconfcentral.org/ns/toaster?revision=2009-11-20)cancel-toast"));
 224
 225         final BrokerFacade brokerFacade = mock(BrokerFacade.class);
 226         when(brokerFacade.invokeRpc(eq(path), any(NormalizedNode.class))).thenReturn(future);
 227
 228         restconfImpl.setBroker(brokerFacade);
 229
 230         try {
 231             restconfImpl.invokeRpc("toaster:cancel-toast", "", uriInfo);
 232             fail("Expected an exception to be thrown.");
 233         } catch (final RestconfDocumentedException e) {
 234             verifyRestconfDocumentedException(e, 0, ErrorType.TRANSPORT, ErrorTag.OPERATION_FAILED, Optional.of("foo"),
 235                     Optional.<String> absent());
 236             verifyRestconfDocumentedException(e, 1, ErrorType.RPC, ErrorTag.IN_USE, Optional.of("bar"),
 237                     Optional.of("app-tag"));
 238         }
 239     }
 240
 241     @Test
 242     public void testInvokeRpcWithNoPayload_Success() {
 243         final NormalizedNode<?, ?> resultObj = null;
 244         final DOMRpcResult expResult = new DefaultDOMRpcResult(resultObj);
 245         final CheckedFuture<DOMRpcResult, DOMRpcException> future = Futures.immediateCheckedFuture(expResult);
 246
 247         final QName qname = QName.create("(http://netconfcentral.org/ns/toaster?revision=2009-11-20)cancel-toast");
 248         final SchemaPath path = SchemaPath.create(true, qname);
 249
 250         final BrokerFacade brokerFacade = mock(BrokerFacade.class);
 251         when(brokerFacade.invokeRpc(eq(path), any (NormalizedNode.class))).thenReturn(future);
 252
 253         restconfImpl.setBroker(brokerFacade);
 254
 255         final NormalizedNodeContext output = restconfImpl.invokeRpc("toaster:cancel-toast", "", uriInfo);
 256         assertNotNull(output);
 257         assertEquals(null, output.getData());
 258         // additional validation in the fact that the restconfImpl does not
 259         // throw an exception.
 260     }
 261
 262     @Test
 263     public void testInvokeRpcMethodExpectingNoPayloadButProvidePayload() {
 264         try {
 265             restconfImpl.invokeRpc("toaster:cancel-toast", " a payload ", uriInfo);
 266             fail("Expected an exception");
 267         } catch (final RestconfDocumentedException e) {
 268             verifyRestconfDocumentedException(e, 0, ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE,
 269                     Optional.<String> absent(), Optional.<String> absent());
 270         }
 271     }
 272
 273     @Test
 274     public void testInvokeRpcMethodWithBadMethodName() {
 275         try {
 276             restconfImpl.invokeRpc("toaster:bad-method", "", uriInfo);
 277             fail("Expected an exception");
 278         } catch (final RestconfDocumentedException e) {
 279             verifyRestconfDocumentedException(e, 0, ErrorType.RPC, ErrorTag.UNKNOWN_ELEMENT,
 280                     Optional.<String> absent(), Optional.<String> absent());
 281         }
 282     }
 283
 284     @Test
 285     public void testInvokeRpcMethodWithInput() {
 286         final DOMRpcResult expResult = mock(DOMRpcResult.class);
 287         final CheckedFuture<DOMRpcResult, DOMRpcException> future = Futures.immediateCheckedFuture(expResult);
 288         final SchemaPath path = SchemaPath.create(true,
 289                 QName.create("(http://netconfcentral.org/ns/toaster?revision=2009-11-20)make-toast"));
 290
 291         final SchemaContext schemaContext = controllerContext.getGlobalSchema();
 292         final Module rpcModule = schemaContext.findModuleByName("toaster", null);
 293         assertNotNull(rpcModule);
 294         final QName rpcQName = QName.create(rpcModule.getQNameModule(), "make-toast");
 295         final QName rpcInputQName = QName.create(rpcModule.getQNameModule(),"input");
 296
 297         final Set<RpcDefinition> setRpcs = rpcModule.getRpcs();
 298         RpcDefinition rpcDef = null;
 299         ContainerSchemaNode rpcInputSchemaNode = null;
 300
 301         for (final RpcDefinition rpc : setRpcs) {
 302             if (rpcQName.isEqualWithoutRevision(rpc.getQName())) {
 303                 rpcInputSchemaNode = SchemaNodeUtils.getRpcDataSchema(rpc, rpcInputQName);
 304                 rpcDef = rpc;
 305                 break;
 306             }
 307         }
 308
 309         assertNotNull(rpcDef);
 310         assertNotNull(rpcInputSchemaNode);
 311         assertTrue(rpcInputSchemaNode instanceof ContainerSchemaNode);
 312         final DataContainerNodeAttrBuilder<NodeIdentifier, ContainerNode> containerBuilder =
 313                 Builders.containerBuilder(rpcInputSchemaNode);
 314
 315         final NormalizedNodeContext payload = new NormalizedNodeContext(new InstanceIdentifierContext(null, rpcInputSchemaNode,
 316                 null, schemaContext), containerBuilder.build());
 317
 318         final BrokerFacade brokerFacade = mock(BrokerFacade.class);
 319         when(brokerFacade.invokeRpc(eq(path), any(NormalizedNode.class))).thenReturn(future);
 320         restconfImpl.setBroker(brokerFacade);
 321
 322         final NormalizedNodeContext output = restconfImpl.invokeRpc("toaster:make-toast", payload, uriInfo);
 323         assertNotNull(output);
 324         assertEquals(null, output.getData());
 325         // additional validation in the fact that the restconfImpl does not
 326         // throw an exception.
 327     }
 328
 329     @Test
 330     public void testThrowExceptionWhenSlashInModuleName() {
 331         try {
 332             restconfImpl.invokeRpc("toaster/slash", "", uriInfo);
 333             fail("Expected an exception.");
 334         } catch (final RestconfDocumentedException e) {
 335             verifyRestconfDocumentedException(e, 0, ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE,
 336                     Optional.<String> absent(), Optional.<String> absent());
 337         }
 338     }
 339
 340     @Test
 341     public void testInvokeRpcWithNoPayloadWithOutput_Success() {
 342         final SchemaContext schema = controllerContext.getGlobalSchema();
 343         final Module rpcModule = schema.findModuleByName("toaster", null);
 344         assertNotNull(rpcModule);
 345         final QName rpcQName = QName.create(rpcModule.getQNameModule(), "testOutput");
 346         final QName rpcOutputQName = QName.create(rpcModule.getQNameModule(),"output");
 347
 348         final Set<RpcDefinition> setRpcs = rpcModule.getRpcs();
 349         RpcDefinition rpcDef = null;
 350         ContainerSchemaNode rpcOutputSchemaNode = null;
 351         for (final RpcDefinition rpc : setRpcs) {
 352             if (rpcQName.isEqualWithoutRevision(rpc.getQName())) {
 353                 rpcOutputSchemaNode = SchemaNodeUtils.getRpcDataSchema(rpc, rpcOutputQName);
 354                 rpcDef = rpc;
 355                 break;
 356             }
 357         }
 358         assertNotNull(rpcDef);
 359         assertNotNull(rpcOutputSchemaNode);
 360         assertTrue(rpcOutputSchemaNode instanceof ContainerSchemaNode);
 361         final DataContainerNodeAttrBuilder<NodeIdentifier, ContainerNode> containerBuilder =
 362                 Builders.containerBuilder(rpcOutputSchemaNode);
 363         final DataSchemaNode leafSchema = rpcOutputSchemaNode
 364                 .getDataChildByName(QName.create(rpcModule.getQNameModule(), "textOut"));
 365         assertTrue(leafSchema instanceof LeafSchemaNode);
 366         final NormalizedNodeAttrBuilder<NodeIdentifier, Object, LeafNode<Object>> leafBuilder =
 367                 Builders.leafBuilder((LeafSchemaNode) leafSchema);
 368         leafBuilder.withValue("brm");
 369         containerBuilder.withChild(leafBuilder.build());
 370         final ContainerNode container = containerBuilder.build();
 371
 372         final DOMRpcResult result = new DefaultDOMRpcResult(container);
 373         final CheckedFuture<DOMRpcResult, DOMRpcException> future = Futures.immediateCheckedFuture(result);
 374
 375         final BrokerFacade brokerFacade = mock(BrokerFacade.class);
 376         when(brokerFacade.invokeRpc(eq(rpcDef.getPath()), any(NormalizedNode.class))).thenReturn(future);
 377
 378         restconfImpl.setBroker(brokerFacade);
 379
 380         final NormalizedNodeContext output = restconfImpl.invokeRpc("toaster:testOutput", "", uriInfo);
 381         assertNotNull(output);
 382         assertNotNull(output.getData());
 383         assertSame(container, output.getData());
 384         assertNotNull(output.getInstanceIdentifierContext());
 385         assertNotNull(output.getInstanceIdentifierContext().getSchemaContext());
 386     }
 387
 388     /**
 389      *
 390      * Tests calling of RestConfImpl method invokeRpc. In the method there is searched rpc in remote schema context.
 391      * This rpc is then executed.
 392      *
 393      * I wasn't able to simulate calling of rpc on remote device therefore this testing method raise method when rpc is
 394      * invoked.
 395      */
 396     @Test
 397     @Ignore // FIXME find how to use mockito for it
 398     public void testMountedRpcCallNoPayload_Success() throws Exception {
 399         final RpcResult<CompositeNode> rpcResult = RpcResultBuilder.<CompositeNode>success().build();
 400
 401         final ListenableFuture<RpcResult<CompositeNode>> mockListener = mock(ListenableFuture.class);
 402         when(mockListener.get()).thenReturn(rpcResult);
 403
 404         final QName cancelToastQName = QName.create("namespace", "2014-05-28", "cancelToast");
 405
 406         final RpcDefinition mockRpc = mock(RpcDefinition.class);
 407         when(mockRpc.getQName()).thenReturn(cancelToastQName);
 408
 409         final DOMMountPoint mockMountPoint = mock(DOMMountPoint.class);
 410         final RpcProvisionRegistry mockedRpcProvisionRegistry = mock(RpcProvisionRegistry.class);
 411         when(mockedRpcProvisionRegistry.invokeRpc(eq(cancelToastQName), any(CompositeNode.class))).thenReturn(mockListener);
 412         when(mockMountPoint.getService(eq(RpcProvisionRegistry.class))).thenReturn(Optional.of(mockedRpcProvisionRegistry));
 413         when(mockMountPoint.getSchemaContext()).thenReturn(TestUtils.loadSchemaContext("/invoke-rpc"));
 414
 415         final InstanceIdentifierContext mockedInstanceId = mock(InstanceIdentifierContext.class);
 416         when(mockedInstanceId.getMountPoint()).thenReturn(mockMountPoint);
 417
 418         final ControllerContext mockedContext = mock(ControllerContext.class);
 419         final String rpcNoop = "invoke-rpc-module:rpc-noop";
 420         when(mockedContext.urlPathArgDecode(rpcNoop)).thenReturn(rpcNoop);
 421         when(mockedContext.getRpcDefinition(rpcNoop)).thenReturn(mockRpc);
 422         when(
 423                 mockedContext.toMountPointIdentifier(eq("opendaylight-inventory:nodes/node/"
 424                         + "REMOTE_HOST/yang-ext:mount/invoke-rpc-module:rpc-noop"))).thenReturn(mockedInstanceId);
 425
 426         restconfImpl.setControllerContext(mockedContext);
 427         try {
 428             restconfImpl.invokeRpc(
 429                     "opendaylight-inventory:nodes/node/REMOTE_HOST/yang-ext:mount/invoke-rpc-module:rpc-noop", "",
 430                     uriInfo);
 431             fail("RestconfDocumentedException wasn't raised");
 432         } catch (final RestconfDocumentedException e) {
 433             final List<RestconfError> errors = e.getErrors();
 434             assertNotNull(errors);
 435             assertEquals(1, errors.size());
 436             assertEquals(ErrorType.APPLICATION, errors.iterator().next().getErrorType());
 437             assertEquals(ErrorTag.OPERATION_FAILED, errors.iterator().next().getErrorTag());
 438         }
 439
 440         // additional validation in the fact that the restconfImpl does not
 441         // throw an exception.
 442     }
 443 }