Convert CDS implementation to use msdal APIs
[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / test / java / org / opendaylight / controller / cluster / databroker / compat / LegacyDOMDataBrokerAdapterTest.java
diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/test/java/org/opendaylight/controller/cluster/databroker/compat/LegacyDOMDataBrokerAdapterTest.java b/opendaylight/md-sal/sal-distributed-datastore/src/test/java/org/opendaylight/controller/cluster/databroker/compat/LegacyDOMDataBrokerAdapterTest.java
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+/*
+ * Copyright (c) 2017 Inocybe Technologies and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.controller.cluster.databroker.compat;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.anyObject;
+import static org.mockito.Matchers.eq;
+import static org.mockito.Mockito.doAnswer;
+import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.inOrder;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+
+import com.google.common.base.Optional;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.util.concurrent.CheckedFuture;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.MoreExecutors;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.concurrent.TimeUnit;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.ArgumentCaptor;
+import org.mockito.InOrder;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.opendaylight.controller.cluster.databroker.ConcurrentDOMDataBroker;
+import org.opendaylight.controller.cluster.datastore.DistributedDataStoreInterface;
+import org.opendaylight.controller.cluster.datastore.exceptions.NoShardLeaderException;
+import org.opendaylight.controller.md.cluster.datastore.model.TestModel;
+import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
+import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
+import org.opendaylight.controller.md.sal.common.api.data.DataStoreUnavailableException;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.md.sal.common.api.data.OptimisticLockFailedException;
+import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
+import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
+import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
+import org.opendaylight.controller.md.sal.dom.api.ClusteredDOMDataTreeChangeListener;
+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.DOMDataTreeChangeListener;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeService;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeCommitCohortRegistry;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeIdentifier;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
+import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
+import org.opendaylight.mdsal.dom.api.DOMDataTreeCommitCohort;
+import org.opendaylight.mdsal.dom.api.DOMDataTreeCommitCohortRegistration;
+import org.opendaylight.mdsal.dom.spi.store.DOMStoreReadTransaction;
+import org.opendaylight.mdsal.dom.spi.store.DOMStoreReadWriteTransaction;
+import org.opendaylight.mdsal.dom.spi.store.DOMStoreThreePhaseCommitCohort;
+import org.opendaylight.mdsal.dom.spi.store.DOMStoreTransactionChain;
+import org.opendaylight.mdsal.dom.spi.store.DOMStoreTreeChangePublisher;
+import org.opendaylight.mdsal.dom.spi.store.DOMStoreWriteTransaction;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.ConflictingModificationAppliedException;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataValidationFailedException;
+import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
+
+/**
+ * Unit tests for LegacyDOMDataBrokerAdapter.
+ *
+ * @author Thomas Pantelis
+ */
+public class LegacyDOMDataBrokerAdapterTest {
+    @Mock
+    private TestDOMStore mockOperStore;
+
+    @Mock
+    private TestDOMStore mockConfigStore;
+
+    @Mock
+    private DOMStoreReadTransaction mockReadTx;
+
+    @Mock
+    private DOMStoreWriteTransaction mockWriteTx;
+
+    @Mock
+    private DOMStoreReadWriteTransaction mockReadWriteTx;
+
+    @Mock
+    private DOMStoreThreePhaseCommitCohort mockCommitCohort;
+
+    private LegacyDOMDataBrokerAdapter adapter;
+    private NormalizedNode<?,?> dataNode;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+
+        ConcurrentDOMDataBroker backendBroker = new ConcurrentDOMDataBroker(ImmutableMap.of(
+                org.opendaylight.mdsal.common.api.LogicalDatastoreType.OPERATIONAL, mockOperStore,
+                org.opendaylight.mdsal.common.api.LogicalDatastoreType.CONFIGURATION, mockConfigStore),
+                MoreExecutors.newDirectExecutorService());
+
+        adapter = new LegacyDOMDataBrokerAdapter(backendBroker);
+
+        doReturn(Futures.immediateFuture(Boolean.TRUE)).when(mockCommitCohort).canCommit();
+        doReturn(Futures.immediateFuture(null)).when(mockCommitCohort).preCommit();
+        doReturn(Futures.immediateFuture(null)).when(mockCommitCohort).commit();
+        doReturn(Futures.immediateFuture(null)).when(mockCommitCohort).abort();
+
+        dataNode = ImmutableNodes.containerNode(TestModel.TEST_QNAME);
+
+        doReturn(mockWriteTx).when(mockConfigStore).newWriteOnlyTransaction();
+        doNothing().when(mockWriteTx).write(TestModel.TEST_PATH, dataNode);
+        doNothing().when(mockWriteTx).merge(TestModel.TEST_PATH, dataNode);
+        doNothing().when(mockWriteTx).delete(TestModel.TEST_PATH);
+        doNothing().when(mockWriteTx).close();
+        doReturn(mockCommitCohort).when(mockWriteTx).ready();
+
+        doReturn(mockReadTx).when(mockConfigStore).newReadOnlyTransaction();
+        doReturn(Futures.immediateCheckedFuture(Optional.of(dataNode))).when(mockReadTx).read(TestModel.TEST_PATH);
+        doReturn(Futures.immediateCheckedFuture(Boolean.TRUE)).when(mockReadTx).exists(TestModel.TEST_PATH);
+
+        doReturn(mockReadWriteTx).when(mockConfigStore).newReadWriteTransaction();
+        doNothing().when(mockReadWriteTx).write(TestModel.TEST_PATH, dataNode);
+        doReturn(mockCommitCohort).when(mockReadWriteTx).ready();
+        doReturn(Futures.immediateCheckedFuture(Optional.of(dataNode))).when(mockReadWriteTx).read(TestModel.TEST_PATH);
+
+        DOMStoreTransactionChain mockTxChain = mock(DOMStoreTransactionChain.class);
+        doReturn(mockReadTx).when(mockTxChain).newReadOnlyTransaction();
+        doReturn(mockWriteTx).when(mockTxChain).newWriteOnlyTransaction();
+        doReturn(mockReadWriteTx).when(mockTxChain).newReadWriteTransaction();
+        doReturn(mockTxChain).when(mockConfigStore).createTransactionChain();
+
+        doReturn(mock(DOMStoreTransactionChain.class)).when(mockOperStore).createTransactionChain();
+    }
+
+    @Test
+    public void testReadOnlyTransaction() throws Exception {
+        DOMDataReadOnlyTransaction tx = adapter.newReadOnlyTransaction();
+
+        // Test successful read
+
+        CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> readFuture =
+                tx.read(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH);
+        Optional<NormalizedNode<?, ?>> readOptional = readFuture.get();
+        assertEquals("isPresent", true, readOptional.isPresent());
+        assertEquals("NormalizedNode", dataNode, readOptional.get());
+
+        // Test successful exists
+
+        CheckedFuture<Boolean, ReadFailedException> existsFuture =
+                tx.exists(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH);
+        assertEquals("exists", Boolean.TRUE, existsFuture.get());
+
+        // Test failed read
+
+        String errorMsg = "mock read error";
+        Throwable cause = new RuntimeException();
+        doReturn(Futures.immediateFailedCheckedFuture(new org.opendaylight.mdsal.common.api.ReadFailedException(
+                errorMsg, cause))).when(mockReadTx).read(TestModel.TEST_PATH);
+
+        try {
+            tx.read(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH).checkedGet();
+            fail("Expected ReadFailedException");
+        } catch (ReadFailedException e) {
+            assertEquals("getMessage", errorMsg, e.getMessage());
+            assertEquals("getCause", cause, e.getCause());
+        }
+
+        // Test close
+        tx.close();
+        verify(mockReadTx).close();
+    }
+
+    @Test
+    public void testWriteOnlyTransaction() throws Exception {
+        // Test successful write operations and submit
+
+        DOMDataWriteTransaction tx = adapter.newWriteOnlyTransaction();
+
+        tx.put(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH, dataNode);
+        verify(mockWriteTx).write(TestModel.TEST_PATH, dataNode);
+
+        tx.merge(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH, dataNode);
+        verify(mockWriteTx).merge(TestModel.TEST_PATH, dataNode);
+
+        tx.delete(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH);
+        verify(mockWriteTx).delete(TestModel.TEST_PATH);
+
+        CheckedFuture<Void, TransactionCommitFailedException> submitFuture = tx.submit();
+        submitFuture.get(5, TimeUnit.SECONDS);
+
+        InOrder inOrder = inOrder(mockCommitCohort);
+        inOrder.verify(mockCommitCohort).canCommit();
+        inOrder.verify(mockCommitCohort).preCommit();
+        inOrder.verify(mockCommitCohort).commit();
+
+        // Test cancel
+
+        tx = adapter.newWriteOnlyTransaction();
+        tx.put(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH, dataNode);
+        tx.cancel();
+        verify(mockWriteTx).close();
+
+        // Test submit with OptimisticLockFailedException
+
+        String errorMsg = "mock OptimisticLockFailedException";
+        Throwable cause = new ConflictingModificationAppliedException(TestModel.TEST_PATH, "mock");
+        doReturn(Futures.immediateFailedFuture(new org.opendaylight.mdsal.common.api.OptimisticLockFailedException(
+                errorMsg, cause))).when(mockCommitCohort).canCommit();
+
+        try {
+            tx = adapter.newWriteOnlyTransaction();
+            tx.put(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH, dataNode);
+            submitFuture = tx.submit();
+            submitFuture.checkedGet(5, TimeUnit.SECONDS);
+            fail("Expected OptimisticLockFailedException");
+        } catch (OptimisticLockFailedException e) {
+            assertEquals("getMessage", errorMsg, e.getMessage());
+            assertEquals("getCause", cause, e.getCause());
+        }
+
+        // Test submit with TransactionCommitFailedException
+
+        errorMsg = "mock TransactionCommitFailedException";
+        cause = new DataValidationFailedException(TestModel.TEST_PATH, "mock");
+        doReturn(Futures.immediateFailedFuture(new org.opendaylight.mdsal.common.api.TransactionCommitFailedException(
+                errorMsg, cause))).when(mockCommitCohort).canCommit();
+
+        try {
+            tx = adapter.newWriteOnlyTransaction();
+            tx.put(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH, dataNode);
+            submitFuture = tx.submit();
+            submitFuture.checkedGet(5, TimeUnit.SECONDS);
+            fail("Expected TransactionCommitFailedException");
+        } catch (TransactionCommitFailedException e) {
+            assertEquals("getMessage", errorMsg, e.getMessage());
+            assertEquals("getCause", cause, e.getCause());
+        }
+
+        // Test submit with DataStoreUnavailableException
+
+        errorMsg = "mock NoShardLeaderException";
+        cause = new NoShardLeaderException("mock");
+        doReturn(Futures.immediateFailedFuture(cause)).when(mockCommitCohort).canCommit();
+
+        try {
+            tx = adapter.newWriteOnlyTransaction();
+            tx.put(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH, dataNode);
+            submitFuture = tx.submit();
+            submitFuture.checkedGet(5, TimeUnit.SECONDS);
+            fail("Expected TransactionCommitFailedException");
+        } catch (TransactionCommitFailedException e) {
+            assertEquals("getCause type", DataStoreUnavailableException.class, e.getCause().getClass());
+            assertEquals("Root cause", cause, e.getCause().getCause());
+        }
+
+        // Test submit with RuntimeException
+
+        errorMsg = "mock RuntimeException";
+        cause = new RuntimeException(errorMsg);
+        doReturn(Futures.immediateFailedFuture(cause)).when(mockCommitCohort).canCommit();
+
+        try {
+            tx = adapter.newWriteOnlyTransaction();
+            tx.put(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH, dataNode);
+            submitFuture = tx.submit();
+            submitFuture.checkedGet(5, TimeUnit.SECONDS);
+            fail("Expected TransactionCommitFailedException");
+        } catch (TransactionCommitFailedException e) {
+            assertEquals("getCause", cause, e.getCause());
+        }
+    }
+
+    @Test
+    public void testReadWriteTransaction() throws Exception {
+        DOMDataReadWriteTransaction tx = adapter.newReadWriteTransaction();
+
+        CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> readFuture =
+                tx.read(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH);
+        Optional<NormalizedNode<?, ?>> readOptional = readFuture.get();
+        assertEquals("isPresent", true, readOptional.isPresent());
+        assertEquals("NormalizedNode", dataNode, readOptional.get());
+
+        tx.put(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH, dataNode);
+        verify(mockReadWriteTx).write(TestModel.TEST_PATH, dataNode);
+
+        CheckedFuture<Void, TransactionCommitFailedException> submitFuture = tx.submit();
+        submitFuture.get(5, TimeUnit.SECONDS);
+
+        InOrder inOrder = inOrder(mockCommitCohort);
+        inOrder.verify(mockCommitCohort).canCommit();
+        inOrder.verify(mockCommitCohort).preCommit();
+        inOrder.verify(mockCommitCohort).commit();
+    }
+
+    @SuppressWarnings("rawtypes")
+    @Test
+    public void testTransactionChain() throws Exception {
+        TransactionChainListener mockListener = mock(TransactionChainListener.class);
+        doNothing().when(mockListener).onTransactionChainSuccessful(anyObject());
+        doNothing().when(mockListener).onTransactionChainFailed(anyObject(), anyObject(), anyObject());
+
+        DOMTransactionChain chain = adapter.createTransactionChain(mockListener);
+
+        // Test read-only tx
+
+        DOMDataReadOnlyTransaction readTx = chain.newReadOnlyTransaction();
+
+        CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> readFuture =
+                readTx.read(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH);
+        Optional<NormalizedNode<?, ?>> readOptional = readFuture.get();
+        assertEquals("isPresent", true, readOptional.isPresent());
+        assertEquals("NormalizedNode", dataNode, readOptional.get());
+
+        // Test write-only tx
+
+        DOMDataWriteTransaction writeTx = chain.newWriteOnlyTransaction();
+
+        writeTx.put(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH, dataNode);
+        verify(mockWriteTx).write(TestModel.TEST_PATH, dataNode);
+        CheckedFuture<Void, TransactionCommitFailedException> submitFuture = writeTx.submit();
+        submitFuture.get(5, TimeUnit.SECONDS);
+
+        InOrder inOrder = inOrder(mockCommitCohort);
+        inOrder.verify(mockCommitCohort).canCommit();
+        inOrder.verify(mockCommitCohort).preCommit();
+        inOrder.verify(mockCommitCohort).commit();
+
+        // Test read-write tx
+
+        DOMDataReadWriteTransaction readWriteTx = chain.newReadWriteTransaction();
+
+        readFuture = readWriteTx.read(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH);
+        readOptional = readFuture.get();
+        assertEquals("isPresent", true, readOptional.isPresent());
+        assertEquals("NormalizedNode", dataNode, readOptional.get());
+
+        chain.close();
+        verify(mockListener).onTransactionChainSuccessful(chain);
+
+        // Test failed chain
+
+        doReturn(Futures.immediateFailedFuture(new org.opendaylight.mdsal.common.api.TransactionCommitFailedException(
+                "mock", (Throwable)null))).when(mockCommitCohort).canCommit();
+
+        chain = adapter.createTransactionChain(mockListener);
+
+        writeTx = chain.newWriteOnlyTransaction();
+
+        try {
+            writeTx.put(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH, dataNode);
+            writeTx.submit().checkedGet(5, TimeUnit.SECONDS);
+            fail("Expected TransactionCommitFailedException");
+        } catch (TransactionCommitFailedException e) {
+            // expected
+        }
+
+        ArgumentCaptor<AsyncTransaction> failedTx = ArgumentCaptor.forClass(AsyncTransaction.class);
+        verify(mockListener).onTransactionChainFailed(eq(chain), failedTx.capture(),
+                any(TransactionCommitFailedException.class));
+    }
+
+    @SuppressWarnings("unchecked")
+    @Test
+    public void testDataTreeChangeListener() {
+        DOMDataTreeChangeService domDTCLService =
+                (DOMDataTreeChangeService) adapter.getSupportedExtensions().get(DOMDataTreeChangeService.class);
+        assertNotNull("DOMDataTreeChangeService not found", domDTCLService);
+
+        ArgumentCaptor<org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener> storeDTCL =
+                ArgumentCaptor.forClass(org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener.class);
+        ListenerRegistration<org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener> mockReg =
+                mock(ListenerRegistration.class);
+        doNothing().when(mockReg).close();
+        doAnswer(invocation -> storeDTCL.getValue()).when(mockReg).getInstance();
+        doReturn(mockReg).when(mockConfigStore).registerTreeChangeListener(eq(TestModel.TEST_PATH),
+                storeDTCL.capture());
+
+        DOMDataTreeChangeListener brokerDTCL = mock(DOMDataTreeChangeListener.class);
+        ListenerRegistration<DOMDataTreeChangeListener> reg = domDTCLService.registerDataTreeChangeListener(
+                new DOMDataTreeIdentifier(LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH), brokerDTCL);
+        assertEquals("getInstance", brokerDTCL, reg.getInstance());
+
+        Collection<DataTreeCandidate> changes = Arrays.asList(mock(DataTreeCandidate.class));
+        storeDTCL.getValue().onDataTreeChanged(changes);
+        verify(brokerDTCL).onDataTreeChanged(changes);
+
+        reg.close();
+        verify(mockReg).close();
+
+        // Test ClusteredDOMDataTreeChangeListener
+
+        ArgumentCaptor<org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener> storeClusteredDTCL =
+                ArgumentCaptor.forClass(org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener.class);
+        mockReg = mock(ListenerRegistration.class);
+        doReturn(mockReg).when(mockConfigStore).registerTreeChangeListener(eq(TestModel.TEST_PATH),
+                storeClusteredDTCL.capture());
+
+        final ClusteredDOMDataTreeChangeListener brokerClusteredDTCL = mock(ClusteredDOMDataTreeChangeListener.class);
+        domDTCLService.registerDataTreeChangeListener(new DOMDataTreeIdentifier(LogicalDatastoreType.CONFIGURATION,
+                TestModel.TEST_PATH), brokerClusteredDTCL);
+
+        assertTrue("Expected ClusteredDOMDataTreeChangeListener: " + storeClusteredDTCL.getValue(),
+                storeClusteredDTCL.getValue()
+                    instanceof org.opendaylight.mdsal.dom.api.ClusteredDOMDataTreeChangeListener);
+        storeClusteredDTCL.getValue().onDataTreeChanged(changes);
+        verify(brokerClusteredDTCL).onDataTreeChanged(changes);
+    }
+
+    @SuppressWarnings("unchecked")
+    @Test
+    public void testDataTreeCommitCohortRegistry() {
+        DOMDataTreeCommitCohortRegistry domCohortRegistry = (DOMDataTreeCommitCohortRegistry)
+                adapter.getSupportedExtensions().get(DOMDataTreeCommitCohortRegistry.class);
+        assertNotNull("DOMDataTreeCommitCohortRegistry not found", domCohortRegistry);
+
+        DOMDataTreeCommitCohort mockCohort = mock(DOMDataTreeCommitCohort.class);
+        org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier treeId =
+                new org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier(
+                    org.opendaylight.mdsal.common.api.LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH);
+        DOMDataTreeCommitCohortRegistration<DOMDataTreeCommitCohort> mockReg =
+                mock(DOMDataTreeCommitCohortRegistration.class);
+        doReturn(mockReg).when(mockConfigStore).registerCommitCohort(treeId, mockCohort);
+
+        DOMDataTreeCommitCohortRegistration<DOMDataTreeCommitCohort> reg = domCohortRegistry.registerCommitCohort(
+                treeId, mockCohort);
+        assertEquals("DOMDataTreeCommitCohortRegistration", mockReg, reg);
+
+        verify(mockConfigStore).registerCommitCohort(treeId, mockCohort);
+    }
+
+    @Test
+    public void testDataChangeListener() {
+        DOMDataChangeListener listener = mock(DOMDataChangeListener.class);
+        ListenerRegistration<DOMDataChangeListener> mockReg = mock(ListenerRegistration.class);
+        doReturn(mockReg).when(mockConfigStore).registerChangeListener(
+                TestModel.TEST_PATH, listener, DataChangeScope.ONE);
+
+        ListenerRegistration<DOMDataChangeListener> reg = adapter.registerDataChangeListener(
+                LogicalDatastoreType.CONFIGURATION, TestModel.TEST_PATH, listener, DataChangeScope.ONE);
+        assertEquals("ListenerRegistration<DOMDataChangeListener>", mockReg, reg);
+
+        verify(mockConfigStore).registerChangeListener(TestModel.TEST_PATH, listener, DataChangeScope.ONE);
+    }
+
+    private interface TestDOMStore extends DistributedDataStoreInterface, DOMStoreTreeChangePublisher,
+            org.opendaylight.mdsal.dom.api.DOMDataTreeCommitCohortRegistry {
+    }
+}