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/*
* Copyright © 2016-2018 European Support Limited
*
* 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 org.openecomp.sdcrests.item.rest.services.catalog.notification;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyLong;
import static org.openecomp.sdcrests.item.rest.services.catalog.notification.AsyncNotifier.NextAction.DONE;
import static org.openecomp.sdcrests.item.rest.services.catalog.notification.AsyncNotifier.NextAction.RETRY;
import java.util.Collection;
import java.util.Collections;
import java.util.UUID;
import java.util.concurrent.Callable;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.function.BiFunction;
import org.apache.commons.lang.mutable.MutableInt;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.mockito.Mockito;
import org.mockito.stubbing.Answer;
import org.openecomp.sdcrests.item.types.ItemAction;
/**
* @author evitaliy
* @since 22 Nov 2018
*/
public class AsyncNotifierTest {
private static final String NUMBER_OF_RETRIES_MESSAGE = "Number of retries must be positive";
private static final String DELAY_MESSAGE = "Delay must be positive";
@Rule
public ExpectedException exception = ExpectedException.none();
@Test(expected = NullPointerException.class)
public void errorWhenWorkerNull() {
new AsyncNotifier.RetryingTask(null, 10, 10, Mockito.mock(ScheduledExecutorService.class));
}
@Test(expected = NullPointerException.class)
public void errorWhenSchedulerServiceNull() {
new AsyncNotifier.RetryingTask(() -> DONE, 10, 10, null);
}
@Test
public void errorWhenNumberOfRetriesNegative() {
exception.expect(IllegalArgumentException.class);
exception.expectMessage(NUMBER_OF_RETRIES_MESSAGE);
new AsyncNotifier.RetryingTask(() -> DONE, -12, 10, Mockito.mock(ScheduledExecutorService.class));
}
@Test
public void errorWhenNumberOfRetriesZero() {
exception.expect(IllegalArgumentException.class);
exception.expectMessage(NUMBER_OF_RETRIES_MESSAGE);
new AsyncNotifier.RetryingTask(() -> DONE, 0, 10, Mockito.mock(ScheduledExecutorService.class));
}
@Test
public void errorWhenDelayNegative() {
exception.expect(IllegalArgumentException.class);
exception.expectMessage(DELAY_MESSAGE);
new AsyncNotifier.RetryingTask(() -> DONE, 1, -77, Mockito.mock(ScheduledExecutorService.class));
}
@Test
public void errorWhenDelayZero() {
exception.expect(IllegalArgumentException.class);
exception.expectMessage(DELAY_MESSAGE);
new AsyncNotifier.RetryingTask(() -> DONE, 1, 0, Mockito.mock(ScheduledExecutorService.class));
}
@Test
public void taskRunsOnceWhenSuccessful() throws Exception {
ScheduledExecutorService executorServiceMock = createMockScheduledExecutor();
MutableInt counter = new MutableInt(0);
Callable<AsyncNotifier.NextAction> countingTask = () -> {
counter.increment();
return DONE;
};
AsyncNotifier.RetryingTask retryingTask =
new AsyncNotifier.RetryingTask(countingTask, 10, 10, executorServiceMock);
retryingTask.call();
assertEquals(1, counter.intValue());
}
private ScheduledExecutorService createMockScheduledExecutor() {
ScheduledExecutorService executorServiceMock = Mockito.mock(ScheduledExecutorService.class);
Answer passThrough = invocation -> {
((Callable<?>) invocation.getArgument(0)).call();
return null;
};
Mockito.doAnswer(passThrough).when(executorServiceMock).submit(any(Callable.class));
Mockito.doAnswer(passThrough).when(executorServiceMock)
.schedule(any(Callable.class), anyLong(), any(TimeUnit.class));
return executorServiceMock;
}
@Test
public void taskRunsTwiceWhenFailedFirstTime() throws Exception {
ScheduledExecutorService executorServiceMock = createMockScheduledExecutor();
MutableInt counter = new MutableInt(0);
Callable<AsyncNotifier.NextAction> countingTask = () -> {
counter.increment();
return counter.intValue() < 2 ? RETRY : DONE;
};
AsyncNotifier.RetryingTask retryingTask =
new AsyncNotifier.RetryingTask(countingTask, 10, 10, executorServiceMock);
retryingTask.call();
assertEquals(2, counter.intValue());
}
@Test
public void exhaustedAttemptsWhenTaskAlwaysFails() throws Exception {
ScheduledExecutorService executorServiceMock = createMockScheduledExecutor();
MutableInt counter = new MutableInt(0);
Callable<AsyncNotifier.NextAction> countingTask = () -> {
counter.increment();
return RETRY;
};
final int numOfRetries = 10;
AsyncNotifier.RetryingTask retryingTask =
new AsyncNotifier.RetryingTask(countingTask, numOfRetries, 10, executorServiceMock);
retryingTask.call();
assertEquals(numOfRetries, counter.intValue());
}
@Test
public void workerExecutedWithGivenItemIdsAndAction()
throws InterruptedException, ExecutionException, TimeoutException {
CompletableFuture<Boolean> completed = new CompletableFuture<>();
Callable<AsyncNotifier.NextAction> mockTask = () -> {
completed.complete(true);
return DONE;
};
final Collection<String> itemIds = Collections.singleton(UUID.randomUUID().toString());
final ItemAction action = ItemAction.RESTORE;
BiFunction<Collection<String>, ItemAction, Callable<AsyncNotifier.NextAction>> mockProducer = (i, a) -> {
assertEquals(itemIds, i);
assertEquals(action, a);
return mockTask;
};
new AsyncNotifier(mockProducer, 1, 1).execute(itemIds, action);
assertTrue(completed.get(5, TimeUnit.SECONDS));
}
}
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