HONEYCOMB-8: Move data layer from impl module into submodules

Change-Id: Ic75793f65cfcad7cc2c96e7a09093e0e1802e4e5
Signed-off-by: Marek Gradzki <mgradzki@cisco.com>
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>

7 files changed, 935 insertions, 0 deletions

diff --git a/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/DataTreeUtilsTest.java b/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/DataTreeUtilsTest.java
new file mode 100644
index 000000000..40792a135
--- /dev/null
+++ b/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/DataTreeUtilsTest.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.honeycomb.v3po.data.impl;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Map;
+import org.junit.Test;
+import org.mockito.Matchers;
+import org.mockito.Mockito;
+import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
+import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
+
+public class DataTreeUtilsTest {
+
+    @Test
+    public void testChildrenFromNormalized() throws Exception {
+        final ContainerNode parent = Mockito.mock(ContainerNode.class);
+        final BindingNormalizedNodeSerializer serializer = Mockito.mock(BindingNormalizedNodeSerializer.class);
+
+        final Collection<DataContainerChild> list = new ArrayList<>();
+        Mockito.doReturn(list).when(parent).getValue();
+
+        // init child1 (will not be serialized)
+        final DataContainerChild child1 = Mockito.mock(DataContainerChild.class);
+        Mockito.when(child1.getIdentifier()).thenReturn(Mockito.mock(YangInstanceIdentifier.PathArgument.class));
+        Mockito.when(serializer.fromNormalizedNode(Matchers.any(YangInstanceIdentifier.class), Matchers.eq(child1))).thenReturn(null);
+        list.add(child1);
+
+        // init child 2 (will be serialized)
+        final DataContainerChild child2 = Mockito.mock(DataContainerChild.class);
+        Mockito.when(child2.getIdentifier()).thenReturn(Mockito.mock(YangInstanceIdentifier.PathArgument.class));
+
+        final Map.Entry entry = Mockito.mock(Map.Entry.class);
+        final InstanceIdentifier<?> id = Mockito.mock(InstanceIdentifier.class);
+        Mockito.doReturn(id).when(entry).getKey();
+        final DataObject data = Mockito.mock(DataObject.class);
+        Mockito.doReturn(data).when(entry).getValue();
+        Mockito.when(serializer.fromNormalizedNode(Matchers.any(YangInstanceIdentifier.class), Matchers.eq(child2))).thenReturn(entry);
+
+        list.add(child2);
+
+        // run tested method
+        final Map<InstanceIdentifier<?>, DataObject> map = DataTreeUtils.childrenFromNormalized(parent, serializer);
+        assertEquals(1, map.size());
+        assertEquals(data, map.get(id));
+    }
+}
\ No newline at end of file
diff --git a/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/ReadWriteTransactionTest.java b/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/ReadWriteTransactionTest.java
new file mode 100644
index 000000000..1b67cd967
--- /dev/null
+++ b/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/ReadWriteTransactionTest.java
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.honeycomb.v3po.data.impl;
+
+import static org.junit.Assert.assertNotNull;
+import static org.mockito.Mockito.verify;
+import static org.mockito.MockitoAnnotations.initMocks;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataReadOnlyTransaction;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+
+public class ReadWriteTransactionTest {
+
+    @Mock
+    private DOMDataReadOnlyTransaction readTx;
+
+    @Mock
+    private DOMDataWriteTransaction writeTx;
+
+    private LogicalDatastoreType store;
+
+    @Mock
+    private YangInstanceIdentifier path;
+
+    @Mock
+    private NormalizedNode<?, ?> data;
+
+    private ReadWriteTransaction readWriteTx;
+
+    @Before
+    public void setUp() {
+        initMocks(this);
+        store = LogicalDatastoreType.CONFIGURATION;
+        readWriteTx = new ReadWriteTransaction(readTx, writeTx);
+    }
+
+    @Test
+    public void testCancel() {
+        readWriteTx.cancel();
+        verify(writeTx).cancel();
+    }
+
+    @Test
+    public void testPut() {
+        readWriteTx.put(store, path, data);
+        verify(writeTx).put(store, path, data);
+    }
+
+    @Test
+    public void testMerge() {
+        readWriteTx.merge(store, path, data);
+        verify(writeTx).merge(store, path, data);
+    }
+
+    @Test
+    public void testDelete() {
+        readWriteTx.delete(store, path);
+        verify(writeTx).delete(store, path);
+    }
+
+    @Test
+    public void testSubmit() throws Exception {
+        readWriteTx.submit();
+        verify(writeTx).submit();
+    }
+
+
+    @SuppressWarnings("deprecation")
+    @Test
+    public void testCommit() throws Exception {
+        readWriteTx.commit();
+        verify(writeTx).commit();
+    }
+
+    @Test
+    public void testRead() {
+        readWriteTx.read(store, path);
+        verify(readTx).read(store, path);
+    }
+
+    @Test
+    public void testExists() {
+        readWriteTx.exists(store, path);
+        verify(readTx).exists(store, path);
+    }
+
+    @Test
+    public void testGetIdentifier() throws Exception {
+        assertNotNull(readWriteTx.getIdentifier());
+    }
+}
\ No newline at end of file
diff --git a/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/VPPConfigDataTreeTest.java b/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/VPPConfigDataTreeTest.java
new file mode 100644
index 000000000..ecb9ac4ab
--- /dev/null
+++ b/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/VPPConfigDataTreeTest.java
@@ -0,0 +1,270 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.honeycomb.v3po.data.impl;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.anyMap;
+import static org.mockito.Matchers.eq;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.doThrow;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+import static org.mockito.MockitoAnnotations.initMocks;
+
+import com.google.common.base.Optional;
+import com.google.common.util.concurrent.CheckedFuture;
+import io.fd.honeycomb.v3po.data.VppDataTreeSnapshot;
+import io.fd.honeycomb.v3po.translate.TranslationException;
+import io.fd.honeycomb.v3po.translate.write.WriteContext;
+import io.fd.honeycomb.v3po.translate.write.WriterRegistry;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
+import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces._interface.Ethernet;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
+import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNode;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeSnapshot;
+
+public class VPPConfigDataTreeTest {
+
+    @Mock
+    private WriterRegistry vppWriter;
+    @Mock
+    private BindingNormalizedNodeSerializer serializer;
+    @Mock
+    private DataTree dataTree;
+    @Mock
+    private DataTreeModification modification;
+
+    private VppConfigDataTree proxy;
+
+    @Before
+    public void setUp() {
+        initMocks(this);
+        proxy = new VppConfigDataTree(serializer, dataTree, vppWriter);
+    }
+
+    @Test
+    public void testRead() throws Exception {
+        final DataTreeSnapshot snapshot = mock(DataTreeSnapshot.class);
+        when(dataTree.takeSnapshot()).thenReturn(snapshot);
+
+        final YangInstanceIdentifier path = mock(YangInstanceIdentifier.class);
+        final Optional node = mock(Optional.class);
+        doReturn(node).when(snapshot).readNode(path);
+
+        final VppDataTreeSnapshot vppDataTreeSnapshot = proxy.takeSnapshot();
+        final CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> future =
+                vppDataTreeSnapshot.read(path);
+
+        verify(dataTree).takeSnapshot();
+        verify(snapshot).readNode(path);
+
+        assertTrue(future.isDone());
+        assertEquals(node, future.get());
+    }
+
+    @Test
+    public void testNewModification() throws Exception {
+        final DataTreeSnapshot snapshot = mock(DataTreeSnapshot.class);
+        when(dataTree.takeSnapshot()).thenReturn(snapshot);
+
+        when(snapshot.newModification()).thenReturn(modification);
+
+        final VppDataTreeSnapshot vppDataTreeSnapshot = proxy.takeSnapshot();
+        final DataTreeModification newModification = vppDataTreeSnapshot.newModification();
+        verify(dataTree).takeSnapshot();
+        verify(snapshot).newModification();
+
+        assertEquals(modification, newModification);
+    }
+
+    @Test
+    public void testCommitSuccessful() throws Exception {
+        final DataObject dataBefore = mockDataObject("before", Ethernet.class);
+        final DataObject dataAfter = mockDataObject("after", Ethernet.class);
+
+        // Prepare modification:
+        final DataTreeCandidateNode rootNode = mockRootNode();
+        // data before:
+        final ContainerNode nodeBefore = mockContainerNode(dataBefore);
+        when(rootNode.getDataBefore()).thenReturn(Optional.<NormalizedNode<?, ?>>fromNullable(nodeBefore));
+        // data after:
+        final ContainerNode nodeAfter = mockContainerNode(dataAfter);
+        when(rootNode.getDataAfter()).thenReturn(Optional.<NormalizedNode<?, ?>>fromNullable(nodeAfter));
+
+        // Run the test
+        proxy.commit(modification);
+
+        // Verify all changes were processed:
+        verify(vppWriter).update(
+                mapOf(dataBefore, Ethernet.class),
+                mapOf(dataAfter, Ethernet.class),
+                any(WriteContext.class));
+
+        // Verify modification was validated
+        verify(dataTree).validate(modification);
+    }
+
+    private Map<InstanceIdentifier<?>, DataObject> mapOf(final DataObject dataBefore, final Class<Ethernet> type) {
+        return eq(
+                Collections.<InstanceIdentifier<?>, DataObject>singletonMap(InstanceIdentifier.create(type),
+                        dataBefore));
+    }
+
+    private DataObject mockDataObject(final String name, final Class<? extends DataObject> classToMock) {
+        final DataObject dataBefore = mock(classToMock, name);
+        doReturn(classToMock).when(dataBefore).getImplementedInterface();
+        return dataBefore;
+    }
+
+    @Test
+    public void testCommitUndoSuccessful() throws Exception {
+        // Prepare data changes:
+        final DataObject dataBefore = mockDataObject("before", Ethernet.class);
+        final DataObject dataAfter = mockDataObject("after", Ethernet.class);
+
+        final io.fd.honeycomb.v3po.translate.write.WriterRegistry.Reverter reverter = mock(
+            io.fd.honeycomb.v3po.translate.write.WriterRegistry.Reverter.class);
+
+        // Fail on update:
+        final TranslationException failedOnUpdateException = new TranslationException("update failed");
+        doThrow(new io.fd.honeycomb.v3po.translate.write.WriterRegistry.BulkUpdateException(InstanceIdentifier.create(Ethernet.class), reverter,
+                failedOnUpdateException)).when(vppWriter).update(anyMap(), anyMap(), any(WriteContext.class));
+
+        // Prepare modification:
+        final DataTreeCandidateNode rootNode = mockRootNode();
+        // data before:
+        final ContainerNode nodeBefore = mockContainerNode(dataBefore);
+        when(rootNode.getDataBefore()).thenReturn(Optional.<NormalizedNode<?, ?>>fromNullable(nodeBefore));
+        // data after:
+        final ContainerNode nodeAfter = mockContainerNode(dataAfter);
+        when(rootNode.getDataAfter()).thenReturn(Optional.<NormalizedNode<?, ?>>fromNullable(nodeAfter));
+
+        // Run the test
+        try {
+            proxy.commit(modification);
+        } catch (io.fd.honeycomb.v3po.translate.write.WriterRegistry.BulkUpdateException e) {
+            verify(vppWriter).update(anyMap(), anyMap(), any(WriteContext.class));
+            verify(reverter).revert();
+            assertEquals(failedOnUpdateException, e.getCause());
+            return;
+        }
+
+        fail("WriterRegistry.BulkUpdateException was expected");
+    }
+
+    @Test
+    public void testCommitUndoFailed() throws Exception {
+        // Prepare data changes:
+        final DataObject dataBefore = mockDataObject("before", Ethernet.class);
+        final DataObject dataAfter = mockDataObject("after", Ethernet.class);
+
+        final io.fd.honeycomb.v3po.translate.write.WriterRegistry.Reverter reverter = mock(
+            io.fd.honeycomb.v3po.translate.write.WriterRegistry.Reverter.class);
+
+        // Fail on update:
+        doThrow(new io.fd.honeycomb.v3po.translate.write.WriterRegistry.BulkUpdateException(InstanceIdentifier.create(Ethernet.class), reverter,
+                new TranslationException("update failed"))).when(vppWriter).update(anyMap(), anyMap(), any(WriteContext.class));
+
+        // Fail on revert:
+        final TranslationException failedOnRevertException = new TranslationException("update failed");
+        final io.fd.honeycomb.v3po.translate.write.WriterRegistry.Reverter.RevertFailedException revertFailedException =
+                new io.fd.honeycomb.v3po.translate.write.WriterRegistry.Reverter.RevertFailedException(Collections.<InstanceIdentifier<?>>emptyList(),
+                        failedOnRevertException);
+        doThrow(revertFailedException).when(reverter).revert();
+
+        // Prepare modification:
+        final DataTreeCandidateNode rootNode = mockRootNode();
+        // data before:
+        final ContainerNode nodeBefore = mockContainerNode(dataBefore);
+        when(rootNode.getDataBefore()).thenReturn(Optional.<NormalizedNode<?, ?>>fromNullable(nodeBefore));
+        // data after:
+        final ContainerNode nodeAfter = mockContainerNode(dataAfter);
+        when(rootNode.getDataAfter()).thenReturn(Optional.<NormalizedNode<?, ?>>fromNullable(nodeAfter));
+
+        // Run the test
+        try {
+            proxy.commit(modification);
+        } catch (io.fd.honeycomb.v3po.translate.write.WriterRegistry.Reverter.RevertFailedException e) {
+            verify(vppWriter).update(anyMap(), anyMap(), any(WriteContext.class));
+            verify(reverter).revert();
+            assertEquals(failedOnRevertException, e.getCause());
+            return;
+        }
+
+        fail("RevertFailedException was expected");
+    }
+
+    private DataTreeCandidateNode mockRootNode() {
+        final DataTreeCandidate candidate = mock(DataTreeCandidate.class);
+        when(dataTree.prepare(modification)).thenReturn(candidate);
+
+        final DataTreeCandidateNode rootNode = mock(DataTreeCandidateNode.class);
+        when(candidate.getRootNode()).thenReturn(rootNode);
+
+        return rootNode;
+    }
+
+    private ContainerNode mockContainerNode(DataObject... modifications) {
+        final int numberOfChildren = modifications.length;
+
+        final YangInstanceIdentifier.NodeIdentifier identifier =
+                YangInstanceIdentifier.NodeIdentifier.create(QName.create("/"));
+
+        final ContainerNode node = mock(ContainerNode.class);
+        when(node.getIdentifier()).thenReturn(identifier);
+
+        final List<DataContainerChild> list = new ArrayList<>(numberOfChildren);
+        doReturn(list).when(node).getValue();
+
+        for (DataObject modification : modifications) {
+            final DataContainerChild child = mock(DataContainerChild.class);
+            when(child.getIdentifier()).thenReturn(mock(YangInstanceIdentifier.PathArgument.class));
+            list.add(child);
+
+            final Map.Entry entry = mock(Map.Entry.class);
+            final Class<? extends DataObject> implementedInterface =
+                    (Class<? extends DataObject>) modification.getImplementedInterface();
+            final InstanceIdentifier<?> id = InstanceIdentifier.create(implementedInterface);
+
+            doReturn(id).when(entry).getKey();
+            doReturn(modification).when(entry).getValue();
+            doReturn(entry).when(serializer).fromNormalizedNode(any(YangInstanceIdentifier.class), eq(child));
+        }
+        return node;
+    }
+}
diff --git a/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/VppDataBrokerTest.java b/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/VppDataBrokerTest.java
new file mode 100644
index 000000000..0a7cd80ae
--- /dev/null
+++ b/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/VppDataBrokerTest.java
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.honeycomb.v3po.data.impl;
+
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+import static org.mockito.MockitoAnnotations.initMocks;
+
+import io.fd.honeycomb.v3po.data.ReadableVppDataTree;
+import io.fd.honeycomb.v3po.data.VppDataTree;
+import io.fd.honeycomb.v3po.data.VppDataTreeSnapshot;
+import java.util.Map;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataBrokerExtension;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataChangeListener;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataReadOnlyTransaction;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataReadWriteTransaction;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+
+public class VppDataBrokerTest {
+
+    @Mock
+    private ReadableVppDataTree operationalData;
+    @Mock
+    private VppDataTree confiDataTree;
+    @Mock
+    private VppDataTreeSnapshot configSnapshot;
+    private VppDataBroker broker;
+
+    @Before
+    public void setUp() {
+        initMocks(this);
+        when(confiDataTree.takeSnapshot()).thenReturn(configSnapshot);
+        broker = new VppDataBroker(operationalData, confiDataTree);
+    }
+
+    @Test
+    public void testNewReadWriteTransaction() {
+        final DOMDataReadWriteTransaction readWriteTx = broker.newReadWriteTransaction();
+        final YangInstanceIdentifier path = mock(YangInstanceIdentifier.class);
+        readWriteTx.read(LogicalDatastoreType.CONFIGURATION, path);
+
+        // verify that read and write transactions use the same config snapshot
+        verify(configSnapshot).read(path);
+        verify(configSnapshot).newModification();
+    }
+
+    @Test
+    public void testNewWriteOnlyTransaction() {
+        final DOMDataWriteTransaction writeTx = broker.newWriteOnlyTransaction();
+
+        // verify that write transactions use config snapshot
+        verify(configSnapshot).newModification();
+    }
+
+    @Test
+    public void testNewReadOnlyTransaction() {
+        final DOMDataReadOnlyTransaction readTx = broker.newReadOnlyTransaction();
+
+        final YangInstanceIdentifier path = mock(YangInstanceIdentifier.class);
+        readTx.read(LogicalDatastoreType.CONFIGURATION, path);
+
+        // verify that read transactions use config snapshot
+        verify(configSnapshot).read(path);
+    }
+
+    @Test(expected = UnsupportedOperationException.class)
+    public void testRegisterDataChangeListener() {
+        final YangInstanceIdentifier path = mock(YangInstanceIdentifier.class);
+        final DOMDataChangeListener listener = mock(DOMDataChangeListener.class);
+        broker.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL, path, listener,
+                AsyncDataBroker.DataChangeScope.BASE);
+    }
+
+    @Test(expected = UnsupportedOperationException.class)
+    public void testCreateTransactionChain() {
+        final TransactionChainListener listener = mock(TransactionChainListener.class);
+        broker.createTransactionChain(listener);
+    }
+
+    @Test
+    public void testGetSupportedExtensions() {
+        final Map<Class<? extends DOMDataBrokerExtension>, DOMDataBrokerExtension> supportedExtensions =
+                broker.getSupportedExtensions();
+        assertTrue(supportedExtensions.isEmpty());
+    }
+
+
+}
\ No newline at end of file
diff --git a/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/VppOperationalDataTreeTest.java b/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/VppOperationalDataTreeTest.java
new file mode 100644
index 000000000..d0b45fa65
--- /dev/null
+++ b/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/VppOperationalDataTreeTest.java
@@ -0,0 +1,171 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.honeycomb.v3po.data.impl;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.same;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.doThrow;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+import static org.mockito.MockitoAnnotations.initMocks;
+
+import com.google.common.base.Optional;
+import com.google.common.collect.Iterables;
+import com.google.common.collect.LinkedListMultimap;
+import com.google.common.collect.Multimap;
+import com.google.common.util.concurrent.CheckedFuture;
+import io.fd.honeycomb.v3po.translate.read.ReadContext;
+import io.fd.honeycomb.v3po.translate.read.ReaderRegistry;
+import java.util.Map;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
+import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VppState;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
+import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
+import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+
+public class VppOperationalDataTreeTest {
+
+    @Mock
+    private BindingNormalizedNodeSerializer serializer;
+    @Mock
+    private ReaderRegistry reader;
+
+    private VppOperationalDataTree operationalData;
+
+    @Mock
+    private InstanceIdentifier<DataObject> id;
+    @Mock
+    private Map.Entry<YangInstanceIdentifier, NormalizedNode<?, ?>> entry;
+    @Mock
+    private SchemaContext globalContext;
+    @Mock
+    private DataSchemaNode schemaNode;
+    @Mock
+    private ReadContext readCtx;
+
+    @Before
+    public void setUp() {
+        initMocks(this);
+        operationalData = new VppOperationalDataTree(serializer, globalContext, reader);
+        doReturn(schemaNode).when(globalContext).getDataChildByName(any(QName.class));
+    }
+
+    @Test
+    public void testReadNode() throws Exception {
+        final YangInstanceIdentifier yangId = mock(YangInstanceIdentifier.class);
+        final YangInstanceIdentifier.PathArgument pArg = mock(YangInstanceIdentifier.PathArgument.class);
+        doReturn(pArg).when(yangId).getLastPathArgument();
+
+        doReturn(QName.create("namespace", "2012-12-12", "local")).when(pArg).getNodeType();
+        doReturn(id).when(serializer).fromYangInstanceIdentifier(yangId);
+
+        final DataObject dataObject = mock(DataObject.class);
+        doReturn(Optional.of(dataObject)).when(reader).read(same(id), any(ReadContext.class));
+
+        when(serializer.toNormalizedNode(id, dataObject)).thenReturn(entry);
+        final DataContainerChild<?, ?> expectedValue = mock(DataContainerChild.class);
+        doReturn(expectedValue).when(entry).getValue();
+
+        final CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> future = operationalData.read(yangId);
+
+        verify(serializer).fromYangInstanceIdentifier(yangId);
+        verify(reader).read(same(id), any(ReadContext.class));
+        final Optional<NormalizedNode<?, ?>> result = future.get();
+        assertTrue(result.isPresent());
+        assertEquals(expectedValue, result.get());
+    }
+
+    @Test
+    public void testReadNonExistingNode() throws Exception {
+        final YangInstanceIdentifier yangId = mock(YangInstanceIdentifier.class);
+        doReturn(id).when(serializer).fromYangInstanceIdentifier(yangId);
+        doReturn(Optional.absent()).when(reader).read(same(id), any(ReadContext.class));
+
+        final CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> future = operationalData.read(yangId);
+
+        verify(serializer).fromYangInstanceIdentifier(yangId);
+        verify(reader).read(same(id), any(ReadContext.class));
+        final Optional<NormalizedNode<?, ?>> result = future.get();
+        assertFalse(result.isPresent());
+    }
+
+    @Test
+    public void testReadFailed() throws Exception{
+        doThrow(io.fd.honeycomb.v3po.translate.read.ReadFailedException.class).when(reader).readAll(any(ReadContext.class));
+
+        final CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> future =
+                operationalData.read( YangInstanceIdentifier.EMPTY);
+
+        try {
+            future.checkedGet();
+        } catch (ReadFailedException e) {
+            assertTrue(e.getCause() instanceof io.fd.honeycomb.v3po.translate.read.ReadFailedException);
+            return;
+        }
+        fail("ReadFailedException was expected");
+    }
+
+    @Test
+    public void testReadRootWithOneNonListElement() throws Exception {
+        // Prepare data
+        final InstanceIdentifier<VppState> vppStateII = InstanceIdentifier.create(VppState.class);
+        final VppState vppState = mock(VppState.class);
+        Multimap<InstanceIdentifier<?>, DataObject> dataObjects = LinkedListMultimap.create();
+        dataObjects.put(vppStateII, vppState);
+        doReturn(dataObjects).when(reader).readAll(any(ReadContext.class));
+
+        // Init serializer
+        final YangInstanceIdentifier vppYangId = YangInstanceIdentifier.builder().node(VppState.QNAME).build();
+        when(serializer.toYangInstanceIdentifier(vppStateII)).thenReturn(vppYangId);
+        when(serializer.toNormalizedNode(vppStateII, vppState)).thenReturn(entry);
+        final DataContainerChild<?, ?> vppStateContainer = mock(DataContainerChild.class);
+        doReturn(vppStateContainer).when(entry).getValue();
+        doReturn(vppYangId.getLastPathArgument()).when(vppStateContainer).getIdentifier();
+
+        // Read root
+        final CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> future =
+                operationalData.read(YangInstanceIdentifier.EMPTY);
+
+        verify(reader).readAll(any(ReadContext.class));
+        verify(serializer).toYangInstanceIdentifier(vppStateII);
+        verify(serializer).toNormalizedNode(vppStateII, vppState);
+
+        // Check the result is an ContainerNode with only one child
+        final Optional<NormalizedNode<?, ?>> result = future.get();
+        assertTrue(result.isPresent());
+
+        final ContainerNode rootNode = (ContainerNode) result.get();
+        assertEquals(SchemaContext.NAME, rootNode.getIdentifier().getNodeType());
+        assertEquals(vppStateContainer, Iterables.getOnlyElement(rootNode.getValue()));
+    }
+}
\ No newline at end of file
diff --git a/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/VppReadOnlyTransactionTest.java b/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/VppReadOnlyTransactionTest.java
new file mode 100644
index 000000000..b0c64bbdf
--- /dev/null
+++ b/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/VppReadOnlyTransactionTest.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.honeycomb.v3po.data.impl;
+
+import static org.junit.Assert.assertNotNull;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+import static org.mockito.MockitoAnnotations.initMocks;
+
+import com.google.common.base.Optional;
+import com.google.common.util.concurrent.CheckedFuture;
+import io.fd.honeycomb.v3po.data.ReadableVppDataTree;
+import io.fd.honeycomb.v3po.data.VppDataTreeSnapshot;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+
+public class VppReadOnlyTransactionTest {
+
+    @Mock
+    private ReadableVppDataTree operationalData;
+    @Mock
+    private VppDataTreeSnapshot configSnapshot;
+
+    private VppReadOnlyTransaction readOnlyTx;
+
+    @Before
+    public void setUp() {
+        initMocks(this);
+        readOnlyTx = new VppReadOnlyTransaction(operationalData, configSnapshot);
+    }
+
+    @Test
+    public void testExists() {
+        final YangInstanceIdentifier path = mock(YangInstanceIdentifier.class);
+        final CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException>
+                future = mock(CheckedFuture.class);
+        when(operationalData.read(path)).thenReturn(future);
+
+        readOnlyTx.exists(LogicalDatastoreType.OPERATIONAL, path);
+
+        verify(operationalData).read(path);
+    }
+
+    @Test
+    public void testGetIdentifier() {
+        assertNotNull(readOnlyTx.getIdentifier());
+    }
+}
\ No newline at end of file
diff --git a/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/VppWriteTransactionTest.java b/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/VppWriteTransactionTest.java
new file mode 100644
index 000000000..ad93b148a
--- /dev/null
+++ b/v3po/data-impl/src/test/java/io/fd/honeycomb/v3po/data/impl/VppWriteTransactionTest.java
@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.honeycomb.v3po.data.impl;
+
+import static junit.framework.TestCase.assertTrue;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.fail;
+import static org.mockito.Mockito.doThrow;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+import static org.mockito.MockitoAnnotations.initMocks;
+
+import com.google.common.util.concurrent.CheckedFuture;
+import io.fd.honeycomb.v3po.data.VppDataTree;
+import io.fd.honeycomb.v3po.data.VppDataTreeSnapshot;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataValidationFailedException;
+
+public class VppWriteTransactionTest {
+
+    @Mock
+    private VppDataTree configDataTree;
+    @Mock
+    private VppDataTreeSnapshot configSnapshot;
+    @Mock
+    private YangInstanceIdentifier path;
+    @Mock
+    private NormalizedNode<?,?> data;
+    @Mock
+    private DataTreeModification dataTreeModification;
+
+    private VppWriteTransaction writeTx;
+
+    @Before
+    public void setUp() {
+        initMocks(this);
+        when(configSnapshot.newModification()).thenReturn(dataTreeModification);
+        writeTx = new VppWriteTransaction(configDataTree, configSnapshot);
+    }
+
+    @Test
+    public void testPut() {
+        writeTx.put(LogicalDatastoreType.CONFIGURATION, path, data);
+        verify(dataTreeModification).write(path, data);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testPutOperational() {
+        writeTx.put(LogicalDatastoreType.OPERATIONAL, path, data);
+        verify(dataTreeModification).write(path, data);
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testOnFinishedTx() {
+        writeTx.submit();
+        writeTx.put(LogicalDatastoreType.CONFIGURATION, path, data);
+        verify(dataTreeModification).write(path, data);
+    }
+
+    @Test
+    public void testMerge() {
+        writeTx.merge(LogicalDatastoreType.CONFIGURATION, path, data);
+        verify(dataTreeModification).merge(path, data);
+    }
+
+    @Test
+    public void testCancel() {
+        assertTrue(writeTx.cancel());
+    }
+
+    @Test
+    public void testCancelFinished() {
+        writeTx.submit();
+        assertFalse(writeTx.cancel());
+    }
+
+    @Test
+    public void testDelete() {
+        writeTx.delete(LogicalDatastoreType.CONFIGURATION, path);
+        verify(dataTreeModification).delete(path);
+    }
+
+    @Test
+    public void testSubmit() throws Exception {
+        writeTx.submit();
+        verify(dataTreeModification).ready();
+        verify(configDataTree).commit(dataTreeModification);
+    }
+
+    @Test
+    public void testSubmitFailed() throws Exception {
+        doThrow(mock(DataValidationFailedException.class)).when(configDataTree).commit(dataTreeModification);
+        final CheckedFuture<Void, TransactionCommitFailedException> future = writeTx.submit();
+        try {
+            future.get();
+        } catch (Exception e) {
+            assertTrue(e.getCause() instanceof TransactionCommitFailedException);
+            return;
+        }
+        fail("Expected exception to be thrown");
+
+    }
+
+    @Test(expected = UnsupportedOperationException.class)
+    public void testCommit() {
+        writeTx.commit();
+    }
+
+    @Test
+    public void testGetIdentifier() {
+        assertNotNull(writeTx.getIdentifier());
+    }
+}
\ No newline at end of file