2 * Copyright (c) 2014 Brocade Communications Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.controller.cluster.datastore;
10 import static org.junit.Assert.assertEquals;
11 import static org.junit.Assert.assertSame;
12 import static org.junit.Assert.assertTrue;
13 import static org.junit.Assert.fail;
14 import static org.mockito.Mockito.doAnswer;
15 import static org.mockito.Mockito.doReturn;
16 import static org.mockito.Mockito.inOrder;
17 import static org.mockito.Mockito.mock;
18 import static org.mockito.Mockito.never;
19 import static org.mockito.Mockito.times;
20 import static org.mockito.Mockito.verify;
21 import com.google.common.collect.ImmutableMap;
22 import com.google.common.util.concurrent.CheckedFuture;
23 import com.google.common.util.concurrent.FutureCallback;
24 import com.google.common.util.concurrent.Futures;
25 import com.google.common.util.concurrent.ListenableFuture;
26 import com.google.common.util.concurrent.MoreExecutors;
27 import com.google.common.util.concurrent.SettableFuture;
28 import com.google.common.util.concurrent.Uninterruptibles;
29 import java.util.ArrayList;
30 import java.util.Arrays;
31 import java.util.Collection;
32 import java.util.List;
33 import java.util.concurrent.CountDownLatch;
34 import java.util.concurrent.SynchronousQueue;
35 import java.util.concurrent.ThreadPoolExecutor;
36 import java.util.concurrent.TimeUnit;
37 import java.util.concurrent.TimeoutException;
38 import java.util.concurrent.atomic.AtomicReference;
39 import org.junit.After;
40 import org.junit.Before;
41 import org.junit.Test;
42 import org.mockito.InOrder;
43 import org.mockito.invocation.InvocationOnMock;
44 import org.mockito.stubbing.Answer;
45 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
46 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
47 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
48 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadOnlyTransaction;
49 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadWriteTransaction;
50 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
51 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
52 import org.opendaylight.controller.md.sal.dom.store.impl.InMemoryDOMDataStore;
53 import org.opendaylight.controller.sal.core.spi.data.DOMStore;
54 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
55 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadWriteTransaction;
56 import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
57 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
58 import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
59 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
60 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
63 * Unit tests for DOMConcurrentDataCommitCoordinator.
65 * @author Thomas Pantelis
67 public class ConcurrentDOMDataBrokerTest {
69 private final DOMDataWriteTransaction transaction = mock(DOMDataWriteTransaction.class);
70 private final DOMStoreThreePhaseCommitCohort mockCohort1 = mock(DOMStoreThreePhaseCommitCohort.class);
71 private final DOMStoreThreePhaseCommitCohort mockCohort2 = mock(DOMStoreThreePhaseCommitCohort.class);
72 private final ThreadPoolExecutor futureExecutor =
73 new ThreadPoolExecutor(0, 1, 5, TimeUnit.SECONDS, new SynchronousQueue<Runnable>());
74 private ConcurrentDOMDataBroker coordinator;
78 doReturn("tx").when(transaction).getIdentifier();
80 DOMStore store = new InMemoryDOMDataStore("OPER",
81 MoreExecutors.sameThreadExecutor());
83 coordinator = new ConcurrentDOMDataBroker(ImmutableMap.of(LogicalDatastoreType.OPERATIONAL, store), futureExecutor);
87 public void tearDown() {
88 futureExecutor.shutdownNow();
92 public void testSuccessfulSubmitAsync() throws Throwable {
93 testSuccessfulSubmit(true);
97 public void testSuccessfulSubmitSync() throws Throwable {
98 testSuccessfulSubmit(false);
101 private void testSuccessfulSubmit(final boolean doAsync) throws Throwable {
102 final CountDownLatch asyncCanCommitContinue = new CountDownLatch(1);
103 Answer<ListenableFuture<Boolean>> asyncCanCommit = new Answer<ListenableFuture<Boolean>>() {
105 public ListenableFuture<Boolean> answer(final InvocationOnMock invocation) {
106 final SettableFuture<Boolean> future = SettableFuture.create();
111 Uninterruptibles.awaitUninterruptibly(asyncCanCommitContinue,
112 10, TimeUnit.SECONDS);
124 doAnswer(asyncCanCommit).when(mockCohort1).canCommit();
125 doReturn(Futures.immediateFuture(null)).when(mockCohort1).preCommit();
126 doReturn(Futures.immediateFuture(null)).when(mockCohort1).commit();
128 doReturn(Futures.immediateFuture(true)).when(mockCohort2).canCommit();
129 doReturn(Futures.immediateFuture(null)).when(mockCohort2).preCommit();
130 doReturn(Futures.immediateFuture(null)).when(mockCohort2).commit();
132 CheckedFuture<Void, TransactionCommitFailedException> future = coordinator.submit(
133 transaction, Arrays.asList(mockCohort1, mockCohort2));
135 final CountDownLatch doneLatch = new CountDownLatch(1);
136 final AtomicReference<Throwable> caughtEx = new AtomicReference<>();
137 Futures.addCallback(future, new FutureCallback<Void>() {
139 public void onSuccess(final Void result) {
140 doneLatch.countDown();
144 public void onFailure(final Throwable t) {
146 doneLatch.countDown();
150 asyncCanCommitContinue.countDown();
152 assertEquals("Submit complete", true, doneLatch.await(5, TimeUnit.SECONDS));
154 if(caughtEx.get() != null) {
155 throw caughtEx.get();
158 assertEquals("Task count", doAsync ? 1 : 0, futureExecutor.getTaskCount());
160 InOrder inOrder = inOrder(mockCohort1, mockCohort2);
161 inOrder.verify(mockCohort1).canCommit();
162 inOrder.verify(mockCohort2).canCommit();
163 inOrder.verify(mockCohort1).preCommit();
164 inOrder.verify(mockCohort2).preCommit();
165 inOrder.verify(mockCohort1).commit();
166 inOrder.verify(mockCohort2).commit();
170 public void testSubmitWithNegativeCanCommitResponse() throws Exception {
171 doReturn(Futures.immediateFuture(true)).when(mockCohort1).canCommit();
172 doReturn(Futures.immediateFuture(null)).when(mockCohort1).abort();
174 doReturn(Futures.immediateFuture(false)).when(mockCohort2).canCommit();
175 doReturn(Futures.immediateFuture(null)).when(mockCohort2).abort();
177 DOMStoreThreePhaseCommitCohort mockCohort3 = mock(DOMStoreThreePhaseCommitCohort.class);
178 doReturn(Futures.immediateFuture(false)).when(mockCohort3).canCommit();
179 doReturn(Futures.immediateFuture(null)).when(mockCohort3).abort();
181 CheckedFuture<Void, TransactionCommitFailedException> future = coordinator.submit(
182 transaction, Arrays.asList(mockCohort1, mockCohort2, mockCohort3));
184 assertFailure(future, null, mockCohort1, mockCohort2, mockCohort3);
187 private void assertFailure(final CheckedFuture<Void, TransactionCommitFailedException> future,
188 final Exception expCause, final DOMStoreThreePhaseCommitCohort... mockCohorts)
191 future.checkedGet(5, TimeUnit.SECONDS);
192 fail("Expected TransactionCommitFailedException");
193 } catch (TransactionCommitFailedException e) {
194 if(expCause != null) {
195 assertSame("Expected cause", expCause, e.getCause());
198 InOrder inOrder = inOrder((Object[])mockCohorts);
199 for(DOMStoreThreePhaseCommitCohort c: mockCohorts) {
200 inOrder.verify(c).abort();
202 } catch (TimeoutException e) {
208 public void testSubmitWithCanCommitException() throws Exception {
209 doReturn(Futures.immediateFuture(true)).when(mockCohort1).canCommit();
210 doReturn(Futures.immediateFuture(null)).when(mockCohort1).abort();
212 IllegalStateException cause = new IllegalStateException("mock");
213 doReturn(Futures.immediateFailedFuture(cause)).when(mockCohort2).canCommit();
214 doReturn(Futures.immediateFuture(null)).when(mockCohort2).abort();
216 CheckedFuture<Void, TransactionCommitFailedException> future = coordinator.submit(
217 transaction, Arrays.asList(mockCohort1, mockCohort2));
219 assertFailure(future, cause, mockCohort1, mockCohort2);
223 public void testSubmitWithPreCommitException() throws Exception {
224 doReturn(Futures.immediateFuture(true)).when(mockCohort1).canCommit();
225 doReturn(Futures.immediateFuture(null)).when(mockCohort1).preCommit();
226 doReturn(Futures.immediateFuture(null)).when(mockCohort1).abort();
228 doReturn(Futures.immediateFuture(true)).when(mockCohort2).canCommit();
229 IllegalStateException cause = new IllegalStateException("mock");
230 doReturn(Futures.immediateFailedFuture(cause)).when(mockCohort2).preCommit();
231 doReturn(Futures.immediateFuture(null)).when(mockCohort2).abort();
233 DOMStoreThreePhaseCommitCohort mockCohort3 = mock(DOMStoreThreePhaseCommitCohort.class);
234 doReturn(Futures.immediateFuture(true)).when(mockCohort3).canCommit();
235 doReturn(Futures.immediateFailedFuture(new IllegalStateException("mock2"))).
236 when(mockCohort3).preCommit();
237 doReturn(Futures.immediateFuture(null)).when(mockCohort3).abort();
239 CheckedFuture<Void, TransactionCommitFailedException> future = coordinator.submit(
240 transaction, Arrays.asList(mockCohort1, mockCohort2, mockCohort3));
242 assertFailure(future, cause, mockCohort1, mockCohort2, mockCohort3);
246 public void testSubmitWithCommitException() throws Exception {
247 doReturn(Futures.immediateFuture(true)).when(mockCohort1).canCommit();
248 doReturn(Futures.immediateFuture(null)).when(mockCohort1).preCommit();
249 doReturn(Futures.immediateFuture(null)).when(mockCohort1).commit();
250 doReturn(Futures.immediateFuture(null)).when(mockCohort1).abort();
252 doReturn(Futures.immediateFuture(true)).when(mockCohort2).canCommit();
253 doReturn(Futures.immediateFuture(null)).when(mockCohort2).preCommit();
254 IllegalStateException cause = new IllegalStateException("mock");
255 doReturn(Futures.immediateFailedFuture(cause)).when(mockCohort2).commit();
256 doReturn(Futures.immediateFuture(null)).when(mockCohort2).abort();
258 DOMStoreThreePhaseCommitCohort mockCohort3 = mock(DOMStoreThreePhaseCommitCohort.class);
259 doReturn(Futures.immediateFuture(true)).when(mockCohort3).canCommit();
260 doReturn(Futures.immediateFuture(null)).when(mockCohort3).preCommit();
261 doReturn(Futures.immediateFailedFuture(new IllegalStateException("mock2"))).
262 when(mockCohort3).commit();
263 doReturn(Futures.immediateFuture(null)).when(mockCohort3).abort();
265 CheckedFuture<Void, TransactionCommitFailedException> future = coordinator.submit(
266 transaction, Arrays.asList(mockCohort1, mockCohort2, mockCohort3));
268 assertFailure(future, cause, mockCohort1, mockCohort2, mockCohort3);
272 public void testSubmitWithAbortException() throws Exception {
273 doReturn(Futures.immediateFuture(true)).when(mockCohort1).canCommit();
274 doReturn(Futures.immediateFailedFuture(new IllegalStateException("mock abort error"))).
275 when(mockCohort1).abort();
277 IllegalStateException cause = new IllegalStateException("mock canCommit error");
278 doReturn(Futures.immediateFailedFuture(cause)).when(mockCohort2).canCommit();
279 doReturn(Futures.immediateFuture(null)).when(mockCohort2).abort();
281 CheckedFuture<Void, TransactionCommitFailedException> future = coordinator.submit(
282 transaction, Arrays.asList(mockCohort1, mockCohort2));
284 assertFailure(future, cause, mockCohort1, mockCohort2);
288 public void testCreateReadWriteTransaction(){
289 DOMStore domStore = mock(DOMStore.class);
290 ConcurrentDOMDataBroker dataBroker = new ConcurrentDOMDataBroker(ImmutableMap.of(LogicalDatastoreType.OPERATIONAL,
291 domStore, LogicalDatastoreType.CONFIGURATION, domStore), futureExecutor);
292 dataBroker.newReadWriteTransaction();
294 verify(domStore, never()).newReadWriteTransaction();
299 public void testCreateWriteOnlyTransaction(){
300 DOMStore domStore = mock(DOMStore.class);
301 ConcurrentDOMDataBroker dataBroker = new ConcurrentDOMDataBroker(ImmutableMap.of(LogicalDatastoreType.OPERATIONAL,
302 domStore, LogicalDatastoreType.CONFIGURATION, domStore), futureExecutor);
303 dataBroker.newWriteOnlyTransaction();
305 verify(domStore, never()).newWriteOnlyTransaction();
309 public void testCreateReadOnlyTransaction(){
310 DOMStore domStore = mock(DOMStore.class);
311 ConcurrentDOMDataBroker dataBroker = new ConcurrentDOMDataBroker(ImmutableMap.of(LogicalDatastoreType.OPERATIONAL,
312 domStore, LogicalDatastoreType.CONFIGURATION, domStore), futureExecutor);
313 dataBroker.newReadOnlyTransaction();
315 verify(domStore, never()).newReadOnlyTransaction();
319 public void testLazySubTransactionCreationForReadWriteTransactions(){
320 DOMStore configDomStore = mock(DOMStore.class);
321 DOMStore operationalDomStore = mock(DOMStore.class);
322 DOMStoreReadWriteTransaction storeTxn = mock(DOMStoreReadWriteTransaction.class);
324 doReturn(storeTxn).when(operationalDomStore).newReadWriteTransaction();
325 doReturn(storeTxn).when(configDomStore).newReadWriteTransaction();
327 ConcurrentDOMDataBroker dataBroker = new ConcurrentDOMDataBroker(ImmutableMap.of(LogicalDatastoreType.OPERATIONAL,
328 operationalDomStore, LogicalDatastoreType.CONFIGURATION, configDomStore), futureExecutor);
329 DOMDataReadWriteTransaction dataTxn = dataBroker.newReadWriteTransaction();
331 dataTxn.put(LogicalDatastoreType.OPERATIONAL, YangInstanceIdentifier.builder().build(), mock(NormalizedNode.class));
332 dataTxn.put(LogicalDatastoreType.OPERATIONAL, YangInstanceIdentifier.builder().build(), mock(NormalizedNode.class));
333 dataTxn.read(LogicalDatastoreType.OPERATIONAL, YangInstanceIdentifier.builder().build());
335 verify(configDomStore, never()).newReadWriteTransaction();
336 verify(operationalDomStore, times(1)).newReadWriteTransaction();
338 dataTxn.put(LogicalDatastoreType.CONFIGURATION, YangInstanceIdentifier.builder().build(), mock(NormalizedNode.class));
340 verify(configDomStore, times(1)).newReadWriteTransaction();
341 verify(operationalDomStore, times(1)).newReadWriteTransaction();
346 public void testLazySubTransactionCreationForWriteOnlyTransactions(){
347 DOMStore configDomStore = mock(DOMStore.class);
348 DOMStore operationalDomStore = mock(DOMStore.class);
349 DOMStoreWriteTransaction storeTxn = mock(DOMStoreWriteTransaction.class);
351 doReturn(storeTxn).when(operationalDomStore).newWriteOnlyTransaction();
352 doReturn(storeTxn).when(configDomStore).newWriteOnlyTransaction();
354 ConcurrentDOMDataBroker dataBroker = new ConcurrentDOMDataBroker(ImmutableMap.of(LogicalDatastoreType.OPERATIONAL,
355 operationalDomStore, LogicalDatastoreType.CONFIGURATION, configDomStore), futureExecutor);
356 DOMDataWriteTransaction dataTxn = dataBroker.newWriteOnlyTransaction();
358 dataTxn.put(LogicalDatastoreType.OPERATIONAL, YangInstanceIdentifier.builder().build(), mock(NormalizedNode.class));
359 dataTxn.put(LogicalDatastoreType.OPERATIONAL, YangInstanceIdentifier.builder().build(), mock(NormalizedNode.class));
361 verify(configDomStore, never()).newWriteOnlyTransaction();
362 verify(operationalDomStore, times(1)).newWriteOnlyTransaction();
364 dataTxn.put(LogicalDatastoreType.CONFIGURATION, YangInstanceIdentifier.builder().build(), mock(NormalizedNode.class));
366 verify(configDomStore, times(1)).newWriteOnlyTransaction();
367 verify(operationalDomStore, times(1)).newWriteOnlyTransaction();
373 public void testLazySubTransactionCreationForReadOnlyTransactions(){
374 DOMStore configDomStore = mock(DOMStore.class);
375 DOMStore operationalDomStore = mock(DOMStore.class);
376 DOMStoreReadTransaction storeTxn = mock(DOMStoreReadTransaction.class);
378 doReturn(storeTxn).when(operationalDomStore).newReadOnlyTransaction();
379 doReturn(storeTxn).when(configDomStore).newReadOnlyTransaction();
381 ConcurrentDOMDataBroker dataBroker = new ConcurrentDOMDataBroker(ImmutableMap.of(LogicalDatastoreType.OPERATIONAL,
382 operationalDomStore, LogicalDatastoreType.CONFIGURATION, configDomStore), futureExecutor);
383 DOMDataReadOnlyTransaction dataTxn = dataBroker.newReadOnlyTransaction();
385 dataTxn.read(LogicalDatastoreType.OPERATIONAL, YangInstanceIdentifier.builder().build());
386 dataTxn.read(LogicalDatastoreType.OPERATIONAL, YangInstanceIdentifier.builder().build());
388 verify(configDomStore, never()).newReadOnlyTransaction();
389 verify(operationalDomStore, times(1)).newReadOnlyTransaction();
391 dataTxn.read(LogicalDatastoreType.CONFIGURATION, YangInstanceIdentifier.builder().build());
393 verify(configDomStore, times(1)).newReadOnlyTransaction();
394 verify(operationalDomStore, times(1)).newReadOnlyTransaction();
399 public void testSubmitWithOnlyOneSubTransaction() throws InterruptedException {
400 DOMStore configDomStore = mock(DOMStore.class);
401 DOMStore operationalDomStore = mock(DOMStore.class);
402 DOMStoreReadWriteTransaction mockStoreReadWriteTransaction = mock(DOMStoreReadWriteTransaction.class);
403 DOMStoreThreePhaseCommitCohort mockCohort = mock(DOMStoreThreePhaseCommitCohort.class);
405 doReturn(mockStoreReadWriteTransaction).when(operationalDomStore).newReadWriteTransaction();
406 doReturn(mockCohort).when(mockStoreReadWriteTransaction).ready();
407 doReturn(Futures.immediateFuture(false)).when(mockCohort).canCommit();
408 doReturn(Futures.immediateFuture(null)).when(mockCohort).abort();
410 final CountDownLatch latch = new CountDownLatch(1);
411 final List<DOMStoreThreePhaseCommitCohort> commitCohorts = new ArrayList();
413 ConcurrentDOMDataBroker dataBroker = new ConcurrentDOMDataBroker(ImmutableMap.of(LogicalDatastoreType.OPERATIONAL,
414 operationalDomStore, LogicalDatastoreType.CONFIGURATION, configDomStore), futureExecutor) {
416 public CheckedFuture<Void, TransactionCommitFailedException> submit(DOMDataWriteTransaction transaction, Collection<DOMStoreThreePhaseCommitCohort> cohorts) {
417 commitCohorts.addAll(cohorts);
419 return super.submit(transaction, cohorts);
422 DOMDataReadWriteTransaction domDataReadWriteTransaction = dataBroker.newReadWriteTransaction();
424 domDataReadWriteTransaction.delete(LogicalDatastoreType.OPERATIONAL, YangInstanceIdentifier.builder().build());
426 domDataReadWriteTransaction.submit();
428 latch.await(10, TimeUnit.SECONDS);
430 assertTrue(commitCohorts.size() == 1);
434 public void testSubmitWithOnlyTwoSubTransactions() throws InterruptedException {
435 DOMStore configDomStore = mock(DOMStore.class);
436 DOMStore operationalDomStore = mock(DOMStore.class);
437 DOMStoreReadWriteTransaction operationalTransaction = mock(DOMStoreReadWriteTransaction.class);
438 DOMStoreReadWriteTransaction configTransaction = mock(DOMStoreReadWriteTransaction.class);
439 DOMStoreThreePhaseCommitCohort mockCohortOperational = mock(DOMStoreThreePhaseCommitCohort.class);
440 DOMStoreThreePhaseCommitCohort mockCohortConfig = mock(DOMStoreThreePhaseCommitCohort.class);
442 doReturn(operationalTransaction).when(operationalDomStore).newReadWriteTransaction();
443 doReturn(configTransaction).when(configDomStore).newReadWriteTransaction();
445 doReturn(mockCohortOperational).when(operationalTransaction).ready();
446 doReturn(Futures.immediateFuture(false)).when(mockCohortOperational).canCommit();
447 doReturn(Futures.immediateFuture(null)).when(mockCohortOperational).abort();
449 doReturn(mockCohortConfig).when(configTransaction).ready();
450 doReturn(Futures.immediateFuture(false)).when(mockCohortConfig).canCommit();
451 doReturn(Futures.immediateFuture(null)).when(mockCohortConfig).abort();
454 final CountDownLatch latch = new CountDownLatch(1);
455 final List<DOMStoreThreePhaseCommitCohort> commitCohorts = new ArrayList();
457 ConcurrentDOMDataBroker dataBroker = new ConcurrentDOMDataBroker(ImmutableMap.of(LogicalDatastoreType.OPERATIONAL,
458 operationalDomStore, LogicalDatastoreType.CONFIGURATION, configDomStore), futureExecutor) {
460 public CheckedFuture<Void, TransactionCommitFailedException> submit(DOMDataWriteTransaction transaction, Collection<DOMStoreThreePhaseCommitCohort> cohorts) {
461 commitCohorts.addAll(cohorts);
463 return super.submit(transaction, cohorts);
466 DOMDataReadWriteTransaction domDataReadWriteTransaction = dataBroker.newReadWriteTransaction();
468 domDataReadWriteTransaction.put(LogicalDatastoreType.OPERATIONAL, YangInstanceIdentifier.builder().build(), mock(NormalizedNode.class));
469 domDataReadWriteTransaction.merge(LogicalDatastoreType.CONFIGURATION, YangInstanceIdentifier.builder().build(), mock(NormalizedNode.class));
471 domDataReadWriteTransaction.submit();
473 latch.await(10, TimeUnit.SECONDS);
475 assertTrue(commitCohorts.size() == 2);
479 public void testCreateTransactionChain(){
480 DOMStore domStore = mock(DOMStore.class);
481 ConcurrentDOMDataBroker dataBroker = new ConcurrentDOMDataBroker(ImmutableMap.of(LogicalDatastoreType.OPERATIONAL,
482 domStore, LogicalDatastoreType.CONFIGURATION, domStore), futureExecutor);
484 dataBroker.createTransactionChain(mock(TransactionChainListener.class));
486 verify(domStore, times(2)).createTransactionChain();
491 public void testCreateTransactionOnChain(){
492 DOMStore domStore = mock(DOMStore.class);
493 ConcurrentDOMDataBroker dataBroker = new ConcurrentDOMDataBroker(ImmutableMap.of(LogicalDatastoreType.OPERATIONAL,
494 domStore, LogicalDatastoreType.CONFIGURATION, domStore), futureExecutor);
496 DOMStoreReadWriteTransaction operationalTransaction = mock(DOMStoreReadWriteTransaction.class);
497 DOMStoreTransactionChain mockChain = mock(DOMStoreTransactionChain.class);
499 doReturn(mockChain).when(domStore).createTransactionChain();
500 doReturn(operationalTransaction).when(mockChain).newWriteOnlyTransaction();
502 DOMTransactionChain transactionChain = dataBroker.createTransactionChain(mock(TransactionChainListener.class));
504 DOMDataWriteTransaction domDataWriteTransaction = transactionChain.newWriteOnlyTransaction();
506 verify(mockChain, never()).newWriteOnlyTransaction();
508 domDataWriteTransaction.put(LogicalDatastoreType.OPERATIONAL, YangInstanceIdentifier.builder().build(), mock(NormalizedNode.class));