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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.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.concurrent.Callable;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import org.apache.commons.lang.mutable.MutableInt;
import org.junit.Test;
import org.mockito.Mockito;
import org.mockito.stubbing.Answer;
/**
* @author evitaliy
* @since 22 Nov 2018
*/
public class AsyncNotifierTest {
@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());
}
@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());
}
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;
}
}
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