yang/yang-data-impl/src/test/java/org/opendaylight/yangtools/yang/data/impl/schema/tree/DataTreeCandidatesTest.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
   9 package org.opendaylight.yangtools.yang.data.impl.schema.tree;
  10
  11 import static org.junit.Assert.assertEquals;
  12 import static org.junit.Assert.fail;
  13
  14 import org.junit.Before;
  15 import org.junit.Test;
  16 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  17 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  18 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  19 import org.opendaylight.yangtools.yang.data.api.schema.LeafNode;
  20 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
  21 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
  22 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidates;
  23 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
  24 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModificationCursor;
  25 import org.opendaylight.yangtools.yang.data.api.schema.tree.TreeType;
  26 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableContainerNodeBuilder;
  27 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableLeafNodeBuilder;
  28 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  29 import org.opendaylight.yangtools.yang.parser.spi.meta.ReactorException;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 public class DataTreeCandidatesTest {
  34
  35     private static final Logger LOG = LoggerFactory.getLogger(DataTreeCandidates.class);
  36
  37     private static final SchemaContext SCHEMA_CONTEXT;
  38
  39     static {
  40         try {
  41             SCHEMA_CONTEXT = TestModel.createTestContext();
  42         } catch (ReactorException e) {
  43             throw new ExceptionInInitializerError(e);
  44         }
  45     }
  46
  47     private DataTree dataTree;
  48
  49     @Before
  50     public void setUp() throws Exception {
  51         dataTree = InMemoryDataTreeFactory.getInstance().create(TreeType.OPERATIONAL);
  52         dataTree.setSchemaContext(SCHEMA_CONTEXT);
  53
  54         final ContainerNode testContainer = ImmutableContainerNodeBuilder.create()
  55                 .withNodeIdentifier(new NodeIdentifier(TestModel.TEST_QNAME))
  56                 .withChild(ImmutableContainerNodeBuilder.create()
  57                         .withNodeIdentifier(new NodeIdentifier(SchemaContext.NAME))
  58                         .build())
  59                 .build();
  60
  61         final InMemoryDataTreeModification modification = (InMemoryDataTreeModification) dataTree.takeSnapshot().newModification();
  62         final DataTreeModificationCursor cursor = modification.createCursor(YangInstanceIdentifier.EMPTY);
  63         cursor.write(TestModel.TEST_PATH.getLastPathArgument(), testContainer);
  64         modification.ready();
  65
  66         dataTree.validate(modification);
  67         final DataTreeCandidate candidate = dataTree.prepare(modification);
  68         dataTree.commit(candidate);
  69     }
  70
  71     @Test
  72     public void testRootedCandidate() throws Exception {
  73         final DataTree innerDataTree = InMemoryDataTreeFactory.getInstance().create(TreeType.OPERATIONAL, TestModel.INNER_CONTAINER_PATH);
  74         innerDataTree.setSchemaContext(SCHEMA_CONTEXT);
  75
  76         final LeafNode<String> leaf = ImmutableLeafNodeBuilder.<String>create()
  77                 .withNodeIdentifier(new NodeIdentifier(TestModel.VALUE_QNAME))
  78                 .withValue("testing-value")
  79                 .build();
  80
  81         final InMemoryDataTreeModification modification = (InMemoryDataTreeModification) innerDataTree.takeSnapshot().newModification();
  82         modification.write(TestModel.VALUE_PATH, leaf);
  83
  84         modification.ready();
  85         dataTree.validate(modification);
  86         final DataTreeCandidate candidate = dataTree.prepare(modification);
  87         dataTree.commit(candidate);
  88
  89         final DataTreeModification newModification = dataTree.takeSnapshot().newModification();
  90         final DataTreeCandidate newCandidate = DataTreeCandidates.newDataTreeCandidate(TestModel.INNER_CONTAINER_PATH, candidate.getRootNode());
  91
  92         try {
  93             // lets see if getting the identifier of the root node throws an exception
  94             newCandidate.getRootNode().getIdentifier();
  95             fail();
  96         } catch (IllegalStateException e) {
  97             LOG.debug("Cannot get identifier of root node candidate which is correct", e);
  98         }
  99
 100         // lets see if we can apply this rooted candidate to a new dataTree
 101         DataTreeCandidates.applyToModification(newModification,
 102                 newCandidate);
 103
 104         final LeafNode<?> readLeaf = (LeafNode<?>) newModification.readNode(TestModel.INNER_VALUE_PATH).get();
 105         assertEquals(readLeaf, leaf);
 106     }
 107 }