yang/yang-data-impl/src/test/java/org/opendaylight/yangtools/yang/data/impl/schema/tree/Bug5968MergeTest.java

   1 /*
   2  * Copyright (c) 2016 Cisco 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 package org.opendaylight.yangtools.yang.data.impl.schema.tree;
   9
  10 import static org.junit.Assert.assertEquals;
  11 import static org.junit.Assert.fail;
  12
  13 import com.google.common.collect.ImmutableMap;
  14 import org.junit.AfterClass;
  15 import org.junit.BeforeClass;
  16 import org.junit.Test;
  17 import org.opendaylight.yangtools.yang.common.QName;
  18 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  19 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  20 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  21 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  22 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  23 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
  24 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
  25 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
  26 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeConfiguration;
  27 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
  28 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataValidationFailedException;
  29 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
  30 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
  31 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.CollectionNodeBuilder;
  32 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.DataContainerNodeBuilder;
  33 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
  34
  35 public class Bug5968MergeTest {
  36     private static final String NS = "foo";
  37     private static final String REV = "2016-07-28";
  38     private static final QName ROOT = QName.create(NS, REV, "root");
  39     private static final QName MY_LIST = QName.create(NS, REV, "my-list");
  40     private static final QName LIST_ID = QName.create(NS, REV, "list-id");
  41     private static final QName MANDATORY_LEAF = QName.create(NS, REV, "mandatory-leaf");
  42     private static final QName COMMON_LEAF = QName.create(NS, REV, "common-leaf");
  43     private static EffectiveModelContext SCHEMA_CONTEXT;
  44
  45     @BeforeClass
  46     public static void beforeClass() {
  47         SCHEMA_CONTEXT = TestModel.createTestContext("/bug5968/foo.yang");
  48     }
  49
  50     @AfterClass
  51     public static void afterClass() {
  52         SCHEMA_CONTEXT = null;
  53     }
  54
  55     private static DataTree initDataTree(final EffectiveModelContext schemaContext, final boolean withMapNode)
  56             throws DataValidationFailedException {
  57         final DataTree inMemoryDataTree = new InMemoryDataTreeFactory().create(
  58                 DataTreeConfiguration.DEFAULT_CONFIGURATION, schemaContext);
  59
  60         final DataContainerNodeBuilder<NodeIdentifier, ContainerNode> root = Builders.containerBuilder()
  61                 .withNodeIdentifier(new NodeIdentifier(ROOT));
  62         final DataTreeModification modificationTree = inMemoryDataTree.takeSnapshot().newModification();
  63         modificationTree.merge(
  64                 YangInstanceIdentifier.of(ROOT),
  65                 withMapNode ? root.withChild(
  66                         Builders.mapBuilder().withNodeIdentifier(new NodeIdentifier(MY_LIST)).build()).build() : root
  67                         .build());
  68         modificationTree.ready();
  69
  70         inMemoryDataTree.validate(modificationTree);
  71         final DataTreeCandidate prepare = inMemoryDataTree.prepare(modificationTree);
  72         inMemoryDataTree.commit(prepare);
  73
  74         return inMemoryDataTree;
  75     }
  76
  77     private static DataTree emptyDataTree(final EffectiveModelContext schemaContext)
  78             throws DataValidationFailedException {
  79         return new InMemoryDataTreeFactory().create(DataTreeConfiguration.DEFAULT_CONFIGURATION, schemaContext);
  80     }
  81
  82     @Test
  83     public void mergeInvalidContainerTest() throws DataValidationFailedException {
  84         final DataTree inMemoryDataTree = emptyDataTree(SCHEMA_CONTEXT);
  85
  86         final MapNode myList = createMap(true);
  87         final DataContainerNodeBuilder<NodeIdentifier, ContainerNode> root = Builders.containerBuilder()
  88                 .withNodeIdentifier(new NodeIdentifier(ROOT)).withChild(myList);
  89
  90         final DataTreeModification modificationTree = inMemoryDataTree.takeSnapshot().newModification();
  91         modificationTree.merge(YangInstanceIdentifier.of(ROOT), root.build());
  92
  93         try {
  94             modificationTree.ready();
  95             inMemoryDataTree.validate(modificationTree);
  96             final DataTreeCandidate prepare = inMemoryDataTree.prepare(modificationTree);
  97             inMemoryDataTree.commit(prepare);
  98             fail("Should fail due to missing mandatory leaf.");
  99         } catch (final IllegalArgumentException e) {
 100             assertEquals(
 101                     "Node (foo?revision=2016-07-28)my-list[{(foo?revision=2016-07-28)list-id=1}] is missing mandatory "
 102                             + "descendant /(foo?revision=2016-07-28)mandatory-leaf", e.getMessage());
 103         }
 104     }
 105
 106     @Test
 107     public void mergeInvalidMapTest() throws DataValidationFailedException {
 108         final DataTree inMemoryDataTree = emptyDataTree(SCHEMA_CONTEXT);
 109         final DataTreeModification modificationTree = inMemoryDataTree.takeSnapshot().newModification();
 110         mergeMap(modificationTree, true);
 111
 112         try {
 113             modificationTree.ready();
 114             inMemoryDataTree.validate(modificationTree);
 115             final DataTreeCandidate prepare = inMemoryDataTree.prepare(modificationTree);
 116             inMemoryDataTree.commit(prepare);
 117             fail("Should fail due to missing mandatory leaf.");
 118         } catch (final IllegalArgumentException e) {
 119             assertEquals(
 120                     "Node (foo?revision=2016-07-28)my-list[{(foo?revision=2016-07-28)list-id=1}] is missing mandatory "
 121                             + "descendant /(foo?revision=2016-07-28)mandatory-leaf", e.getMessage());
 122         }
 123     }
 124
 125     @Test
 126     public void mergeInvalidMapEntryTest() throws DataValidationFailedException {
 127         final DataTree inMemoryDataTree = initDataTree(SCHEMA_CONTEXT, true);
 128         final DataTreeModification modificationTree = inMemoryDataTree.takeSnapshot().newModification();
 129
 130         mergeMapEntry(modificationTree, "1", null, "common-value");
 131
 132         try {
 133             modificationTree.ready();
 134             inMemoryDataTree.validate(modificationTree);
 135             final DataTreeCandidate prepare = inMemoryDataTree.prepare(modificationTree);
 136             inMemoryDataTree.commit(prepare);
 137             fail("Should fail due to missing mandatory leaf.");
 138         } catch (final IllegalArgumentException e) {
 139             assertEquals(
 140                     "Node (foo?revision=2016-07-28)my-list[{(foo?revision=2016-07-28)list-id=1}] is missing mandatory "
 141                             + "descendant /(foo?revision=2016-07-28)mandatory-leaf", e.getMessage());
 142         }
 143     }
 144
 145     private static void mergeMap(final DataTreeModification modificationTree,
 146             final boolean mandatoryDataMissing) throws DataValidationFailedException {
 147         final MapNode myList = createMap(mandatoryDataMissing);
 148         modificationTree.merge(YangInstanceIdentifier.of(ROOT).node(MY_LIST), myList);
 149     }
 150
 151     private static MapNode createMap(final boolean mandatoryDataMissing) throws DataValidationFailedException {
 152         return Builders
 153                 .mapBuilder()
 154                 .withNodeIdentifier(new NodeIdentifier(MY_LIST))
 155                 .withChild(
 156                         mandatoryDataMissing ? createMapEntry("1", "common-value") : createMapEntry("1",
 157                                 "mandatory-value", "common-value")).build();
 158     }
 159
 160     private static void mergeMapEntry(final DataTreeModification modificationTree, final Object listIdValue,
 161             final Object mandatoryLeafValue, final Object commonLeafValue) throws DataValidationFailedException {
 162         final MapEntryNode taskEntryNode = mandatoryLeafValue == null ? createMapEntry(listIdValue, commonLeafValue)
 163                 : createMapEntry(listIdValue, mandatoryLeafValue, commonLeafValue);
 164
 165         modificationTree.merge(
 166                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 167                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, listIdValue))),
 168                 taskEntryNode);
 169     }
 170
 171     private static MapEntryNode createMapEntry(final Object listIdValue, final Object mandatoryLeafValue,
 172             final Object commonLeafValue) throws DataValidationFailedException {
 173         return Builders.mapEntryBuilder()
 174                 .withNodeIdentifier(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, listIdValue)))
 175                 .withChild(ImmutableNodes.leafNode(LIST_ID, listIdValue))
 176                 .withChild(ImmutableNodes.leafNode(MANDATORY_LEAF, mandatoryLeafValue))
 177                 .withChild(ImmutableNodes.leafNode(COMMON_LEAF, commonLeafValue)).build();
 178     }
 179
 180     private static MapEntryNode createMapEntry(final Object listIdValue, final Object commonLeafValue)
 181             throws DataValidationFailedException {
 182         return Builders.mapEntryBuilder()
 183                 .withNodeIdentifier(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, listIdValue)))
 184                 .withChild(ImmutableNodes.leafNode(LIST_ID, listIdValue))
 185                 .withChild(ImmutableNodes.leafNode(COMMON_LEAF, commonLeafValue)).build();
 186     }
 187
 188     private static MapEntryNode createMapEntryM(final Object listIdValue, final Object mandatoryLeafValue)
 189             throws DataValidationFailedException {
 190         return Builders.mapEntryBuilder()
 191                 .withNodeIdentifier(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, listIdValue)))
 192                 .withChild(ImmutableNodes.leafNode(LIST_ID, listIdValue))
 193                 .withChild(ImmutableNodes.leafNode(MANDATORY_LEAF, mandatoryLeafValue)).build();
 194     }
 195
 196     @Test
 197     public void mergeValidContainerTest() throws DataValidationFailedException {
 198         final DataTree inMemoryDataTree = emptyDataTree(SCHEMA_CONTEXT);
 199
 200         final MapNode myList = createMap(false);
 201         final DataContainerNodeBuilder<NodeIdentifier, ContainerNode> root = Builders.containerBuilder()
 202                 .withNodeIdentifier(new NodeIdentifier(ROOT)).withChild(myList);
 203
 204         final DataTreeModification modificationTree = inMemoryDataTree.takeSnapshot().newModification();
 205         modificationTree.merge(YangInstanceIdentifier.of(ROOT), root.build());
 206         modificationTree.ready();
 207         inMemoryDataTree.validate(modificationTree);
 208         final DataTreeCandidate prepare = inMemoryDataTree.prepare(modificationTree);
 209         inMemoryDataTree.commit(prepare);
 210     }
 211
 212     @Test
 213     public void mergeValidMapTest() throws DataValidationFailedException {
 214         final DataTree inMemoryDataTree = emptyDataTree(SCHEMA_CONTEXT);
 215         final DataTreeModification modificationTree = inMemoryDataTree.takeSnapshot().newModification();
 216         mergeMap(modificationTree, false);
 217
 218         modificationTree.ready();
 219         inMemoryDataTree.validate(modificationTree);
 220         final DataTreeCandidate prepare = inMemoryDataTree.prepare(modificationTree);
 221         inMemoryDataTree.commit(prepare);
 222     }
 223
 224     @Test
 225     public void mergeValidMapEntryTest() throws DataValidationFailedException {
 226         final DataTree inMemoryDataTree = initDataTree(SCHEMA_CONTEXT, true);
 227         final DataTreeModification modificationTree = inMemoryDataTree.takeSnapshot().newModification();
 228
 229         mergeMapEntry(modificationTree, "1", "mandatory-value", "common-value");
 230
 231         modificationTree.ready();
 232         inMemoryDataTree.validate(modificationTree);
 233         final DataTreeCandidate prepare = inMemoryDataTree.prepare(modificationTree);
 234         inMemoryDataTree.commit(prepare);
 235     }
 236
 237     @Test
 238     public void validMultiStepsMergeTest() throws DataValidationFailedException {
 239         final DataTree inMemoryDataTree = emptyDataTree(SCHEMA_CONTEXT);
 240         final DataTreeModification modificationTree = inMemoryDataTree.takeSnapshot().newModification();
 241
 242         modificationTree.merge(YangInstanceIdentifier.of(ROOT), createContainerBuilder().build());
 243         modificationTree.merge(YangInstanceIdentifier.of(ROOT).node(MY_LIST), createMapBuilder().build());
 244         modificationTree.merge(
 245                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 246                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 247                 createEmptyMapEntryBuilder("1").build());
 248         modificationTree.merge(
 249                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 250                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 251                 createMapEntry("1", "mandatory-value", "common-value"));
 252
 253         modificationTree.ready();
 254         inMemoryDataTree.validate(modificationTree);
 255         final DataTreeCandidate prepare = inMemoryDataTree.prepare(modificationTree);
 256         inMemoryDataTree.commit(prepare);
 257     }
 258
 259     @Test
 260     public void invalidMultiStepsMergeTest() throws DataValidationFailedException {
 261         final DataTree inMemoryDataTree = emptyDataTree(SCHEMA_CONTEXT);
 262         final DataTreeModification modificationTree = inMemoryDataTree.takeSnapshot().newModification();
 263
 264         modificationTree.merge(YangInstanceIdentifier.of(ROOT), createContainerBuilder().build());
 265         modificationTree.merge(YangInstanceIdentifier.of(ROOT).node(MY_LIST), createMapBuilder().build());
 266         modificationTree.merge(
 267                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 268                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 269                 createEmptyMapEntryBuilder("1").build());
 270         modificationTree.merge(
 271                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 272                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 273                 createMapEntry("1", "common-value"));
 274
 275         try {
 276             modificationTree.ready();
 277             inMemoryDataTree.validate(modificationTree);
 278             final DataTreeCandidate prepare = inMemoryDataTree.prepare(modificationTree);
 279             inMemoryDataTree.commit(prepare);
 280             fail("Should fail due to missing mandatory leaf.");
 281         } catch (final IllegalArgumentException e) {
 282             assertEquals(
 283                     "Node (foo?revision=2016-07-28)my-list[{(foo?revision=2016-07-28)list-id=1}] is missing mandatory "
 284                             + "descendant /(foo?revision=2016-07-28)mandatory-leaf", e.getMessage());
 285         }
 286     }
 287
 288     private static DataContainerNodeBuilder<NodeIdentifierWithPredicates, MapEntryNode> createEmptyMapEntryBuilder(
 289             final Object listIdValue) throws DataValidationFailedException {
 290         return Builders.mapEntryBuilder()
 291                 .withNodeIdentifier(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, listIdValue)))
 292                 .withChild(ImmutableNodes.leafNode(LIST_ID, listIdValue));
 293     }
 294
 295     private static CollectionNodeBuilder<MapEntryNode, MapNode> createMapBuilder() {
 296         return Builders.mapBuilder().withNodeIdentifier(new NodeIdentifier(MY_LIST));
 297     }
 298
 299     private static DataContainerNodeBuilder<NodeIdentifier, ContainerNode> createContainerBuilder() {
 300         return Builders.containerBuilder().withNodeIdentifier(new NodeIdentifier(ROOT));
 301     }
 302
 303     @Test
 304     public void validMultiStepsWriteAndMergeTest() throws DataValidationFailedException {
 305         final DataTree inMemoryDataTree = emptyDataTree(SCHEMA_CONTEXT);
 306         final DataTreeModification modificationTree = inMemoryDataTree.takeSnapshot().newModification();
 307
 308         modificationTree.write(YangInstanceIdentifier.of(ROOT), createContainerBuilder().build());
 309         modificationTree.merge(YangInstanceIdentifier.of(ROOT).node(MY_LIST), createMapBuilder().build());
 310         modificationTree.merge(
 311                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 312                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 313                 createEmptyMapEntryBuilder("1").build());
 314         modificationTree.merge(
 315                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 316                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 317                 createMapEntry("1", "mandatory-value", "common-value"));
 318
 319         modificationTree.ready();
 320         inMemoryDataTree.validate(modificationTree);
 321         final DataTreeCandidate prepare = inMemoryDataTree.prepare(modificationTree);
 322         inMemoryDataTree.commit(prepare);
 323     }
 324
 325     @Test
 326     public void invalidMultiStepsWriteAndMergeTest() throws DataValidationFailedException {
 327         final DataTree inMemoryDataTree = emptyDataTree(SCHEMA_CONTEXT);
 328         final DataTreeModification modificationTree = inMemoryDataTree.takeSnapshot().newModification();
 329
 330         modificationTree.write(YangInstanceIdentifier.of(ROOT), createContainerBuilder().build());
 331         modificationTree.merge(YangInstanceIdentifier.of(ROOT).node(MY_LIST), createMapBuilder().build());
 332         modificationTree.merge(
 333                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 334                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 335                 createEmptyMapEntryBuilder("1").build());
 336         modificationTree.merge(
 337                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 338                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 339                 createMapEntry("1", "common-value"));
 340
 341         try {
 342             modificationTree.ready();
 343             inMemoryDataTree.validate(modificationTree);
 344             final DataTreeCandidate prepare = inMemoryDataTree.prepare(modificationTree);
 345             inMemoryDataTree.commit(prepare);
 346             fail("Should fail due to missing mandatory leaf.");
 347         } catch (final IllegalArgumentException e) {
 348             assertEquals(
 349                     "Node (foo?revision=2016-07-28)my-list[{(foo?revision=2016-07-28)list-id=1}] is missing mandatory "
 350                             + "descendant /(foo?revision=2016-07-28)mandatory-leaf", e.getMessage());
 351         }
 352     }
 353
 354     @Test
 355     public void validMapEntryMultiCommitMergeTest() throws DataValidationFailedException {
 356         final DataTree inMemoryDataTree = emptyDataTree(SCHEMA_CONTEXT);
 357         final DataTreeModification modificationTree = inMemoryDataTree.takeSnapshot().newModification();
 358
 359         modificationTree.write(YangInstanceIdentifier.of(ROOT), createContainerBuilder().build());
 360         modificationTree.merge(YangInstanceIdentifier.of(ROOT).node(MY_LIST), createMapBuilder().build());
 361         modificationTree.merge(
 362                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 363                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 364                 createEmptyMapEntryBuilder("1").build());
 365         modificationTree.merge(
 366                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 367                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 368                 createMapEntryM("1", "mandatory-value"));
 369
 370         modificationTree.ready();
 371         inMemoryDataTree.validate(modificationTree);
 372         final DataTreeCandidate prepare = inMemoryDataTree.prepare(modificationTree);
 373         inMemoryDataTree.commit(prepare);
 374
 375         final DataTreeModification modificationTree2 = inMemoryDataTree.takeSnapshot().newModification();
 376         modificationTree2.merge(
 377                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 378                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 379                 createMapEntry("1", "common-value"));
 380         modificationTree2.ready();
 381         inMemoryDataTree.validate(modificationTree2);
 382         final DataTreeCandidate prepare2 = inMemoryDataTree.prepare(modificationTree2);
 383         inMemoryDataTree.commit(prepare2);
 384     }
 385
 386     @Test
 387     public void invalidMapEntryMultiCommitMergeTest() throws DataValidationFailedException {
 388         final DataTree inMemoryDataTree = emptyDataTree(SCHEMA_CONTEXT);
 389         final DataTreeModification modificationTree = inMemoryDataTree.takeSnapshot().newModification();
 390
 391         modificationTree.write(YangInstanceIdentifier.of(ROOT), createContainerBuilder().build());
 392         modificationTree.merge(YangInstanceIdentifier.of(ROOT).node(MY_LIST), createMapBuilder().build());
 393         modificationTree.merge(
 394                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 395                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 396                 createEmptyMapEntryBuilder("1").build());
 397         modificationTree.merge(
 398                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 399                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 400                 createMapEntryM("1", "mandatory-value"));
 401
 402         modificationTree.ready();
 403         inMemoryDataTree.validate(modificationTree);
 404         final DataTreeCandidate prepare = inMemoryDataTree.prepare(modificationTree);
 405         inMemoryDataTree.commit(prepare);
 406
 407         final DataTreeModification modificationTree2 = inMemoryDataTree.takeSnapshot().newModification();
 408         modificationTree2.write(
 409                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 410                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 411                 createMapEntry("1", "common-value"));
 412         modificationTree2.merge(
 413                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 414                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 415                 createMapEntryM("1", "mandatory-value"));
 416         modificationTree2.merge(
 417                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 418                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "2"))),
 419                 createMapEntry("2", "common-value"));
 420         try {
 421             modificationTree2.ready();
 422             inMemoryDataTree.validate(modificationTree2);
 423             final DataTreeCandidate prepare2 = inMemoryDataTree.prepare(modificationTree2);
 424             inMemoryDataTree.commit(prepare2);
 425             fail("Should fail due to missing mandatory leaf.");
 426         } catch (final IllegalArgumentException e) {
 427             assertEquals(
 428                     "Node (foo?revision=2016-07-28)my-list[{(foo?revision=2016-07-28)list-id=2}] is missing mandatory "
 429                             + "descendant /(foo?revision=2016-07-28)mandatory-leaf", e.getMessage());
 430         }
 431     }
 432
 433     /*
 434      * This test consists of two transactions (i.e. data tree modifications) on
 435      * empty data tree. The first one writes mandatory data and second one
 436      * writes common data without any mandatory data.
 437      */
 438     @Test
 439     public void validMapEntryMultiCommitMergeTest2() throws DataValidationFailedException {
 440         final DataTree inMemoryDataTree = emptyDataTree(SCHEMA_CONTEXT);
 441         final DataTreeModification modificationTree = inMemoryDataTree.takeSnapshot().newModification();
 442         final DataTreeModification modificationTree2 = inMemoryDataTree.takeSnapshot().newModification();
 443
 444         modificationTree.write(YangInstanceIdentifier.of(ROOT), createContainerBuilder().build());
 445         modificationTree.merge(YangInstanceIdentifier.of(ROOT).node(MY_LIST), createMapBuilder().build());
 446         modificationTree.merge(
 447                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 448                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 449                 createEmptyMapEntryBuilder("1").build());
 450         modificationTree.merge(
 451                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 452                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 453                 createMapEntryM("1", "mandatory-value"));
 454
 455         modificationTree.ready();
 456         inMemoryDataTree.validate(modificationTree);
 457         final DataTreeCandidate prepare = inMemoryDataTree.prepare(modificationTree);
 458         inMemoryDataTree.commit(prepare);
 459
 460         modificationTree2.merge(
 461                 YangInstanceIdentifier.of(ROOT).node(MY_LIST)
 462                         .node(NodeIdentifierWithPredicates.of(MY_LIST, ImmutableMap.of(LIST_ID, "1"))),
 463                 createMapEntry("1", "common-value"));
 464         modificationTree2.ready();
 465         inMemoryDataTree.validate(modificationTree2);
 466         final DataTreeCandidate prepare2 = inMemoryDataTree.prepare(modificationTree2);
 467         inMemoryDataTree.commit(prepare2);
 468     }
 469 }