/*
* Copyright (c) 2012, the Dart project authors.
*
* Licensed under the Eclipse Public License v1.0 (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.eclipse.org/legal/epl-v10.html
*
* 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 com.google.dart.engine.internal.index.operation;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Lists;
import com.google.dart.engine.AnalysisEngine;
import com.google.dart.engine.EngineTestCase;
import com.google.dart.engine.source.Source;
import com.google.dart.engine.utilities.logging.Logger;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
import static org.mockito.Matchers.anyInt;
import static org.mockito.Matchers.anyString;
import static org.mockito.Matchers.same;
import static org.mockito.Mockito.doAnswer;
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 java.util.Arrays;
import java.util.Collections;
import java.util.LinkedList;
import java.util.Set;
import java.util.concurrent.CountDownLatch;
public class OperationProcessorTest extends EngineTestCase {
/**
* Runs given {@link OperationProcessor} in thread.
*/
private static Source[] runOperationProcessor(IndexOperation beforeStopOperations[],
boolean waitStop, IndexOperation afterStopOperations[]) throws Exception {
final CountDownLatch stopLatch = new CountDownLatch(1);
// prepare operations
final LinkedList<IndexOperation> operations;
{
operations = Lists.newLinkedList();
Collections.addAll(operations, beforeStopOperations);
//
IndexOperation stopOperation = mock(IndexOperation.class);
doAnswer(new Answer<Void>() {
@Override
public Void answer(InvocationOnMock invocation) throws Throwable {
stopLatch.countDown();
return null;
}
}).when(stopOperation).performOperation();
operations.add(stopOperation);
}
// prepare OperationQueue to return elements from "operations"
OperationQueue queue = mock(OperationQueue.class);
when(queue.dequeue(anyInt())).then(new Answer<IndexOperation>() {
@Override
public IndexOperation answer(InvocationOnMock invocation) throws Throwable {
if (!operations.isEmpty()) {
return operations.removeFirst();
}
return null;
}
});
when(queue.getOperations()).thenReturn(Arrays.asList(afterStopOperations));
// run OperationProcessor
final OperationProcessor processor = new OperationProcessor(queue);
new Thread() {
@Override
public void run() {
processor.run();
}
}.start();
// wait for stop
stopLatch.await();
return processor.stop(waitStop);
}
public void test_performOperation() throws Exception {
IndexOperation operation = mock(IndexOperation.class);
runOperationProcessor(new IndexOperation[] {operation}, false, new IndexOperation[] {});
verify(operation).performOperation();
}
public void test_performOperation_throwException() throws Exception {
Logger oldLogger = AnalysisEngine.getInstance().getLogger();
try {
NullPointerException myException = new NullPointerException();
IndexOperation operation = mock(IndexOperation.class);
doThrow(myException).when(operation).performOperation();
// set mock Logger
Logger logger = mock(Logger.class);
AnalysisEngine.getInstance().setLogger(logger);
// run processor
runOperationProcessor(new IndexOperation[] {operation}, false, new IndexOperation[] {});
// verify that "myException" was logged
verify(logger).logError(anyString(), same(myException));
} finally {
AnalysisEngine.getInstance().setLogger(oldLogger);
}
}
public void test_run_afterStop() throws Exception {
OperationQueue queue = mock(OperationQueue.class);
OperationProcessor processor = new OperationProcessor(queue);
processor.stop(false);
try {
processor.run();
fail();
} catch (IllegalStateException e) {
}
}
public void test_run_InterruptedException() throws Exception {
final IndexOperation operation = mock(IndexOperation.class);
final OperationQueue queue = mock(OperationQueue.class);
final OperationProcessor processor = new OperationProcessor(queue);
when(queue.dequeue(anyInt())).then(new Answer<IndexOperation>() {
int num = 0;
@Override
public IndexOperation answer(InvocationOnMock invocation) throws Throwable {
num++;
if (num == 1) {
throw new InterruptedException();
}
if (num == 2) {
return operation;
}
processor.stop(false);
return null;
}
});
// run processor
Thread thread = new Thread() {
@Override
public void run() {
processor.run();
}
};
thread.start();
thread.join();
// operation should be performed
verify(operation).performOperation();
}
public void test_stop_returnsNotIndexed_wasReady() throws Exception {
Source source = mock(Source.class);
IndexUnitOperation operation = mock(IndexUnitOperation.class);
OperationQueue queue = mock(OperationQueue.class);
when(operation.getSource()).thenReturn(source);
when(queue.getOperations()).thenReturn(ImmutableList.<IndexOperation> of(operation));
// stop processor
OperationProcessor processor = new OperationProcessor(queue);
Source[] sources = processor.stop(false);
assertExactElementsInArray(sources, new Object[] {source});
}
public void test_stop_returnsNotIndexed_wasRunning() throws Exception {
Source source1 = mock(Source.class);
Source source2 = mock(Source.class);
IndexUnitOperation operation1 = mock(IndexUnitOperation.class);
IndexUnitOperation operation2 = mock(IndexUnitOperation.class);
when(operation1.getSource()).thenReturn(source1);
when(operation2.getSource()).thenReturn(source2);
// run processor
Source[] sources = runOperationProcessor(new IndexOperation[] {}, true, new IndexOperation[] {
operation1, operation2});
Set<Source> sourceSet = ImmutableSet.copyOf(sources);
assertExactElementsInSet(sourceSet, new Object[] {source1, source2});
}
public void test_stop_returnsNotIndexed_wasStopped() throws Exception {
Source source = mock(Source.class);
IndexUnitOperation operation = mock(IndexUnitOperation.class);
OperationQueue queue = mock(OperationQueue.class);
when(operation.getSource()).thenReturn(source);
when(queue.getOperations()).thenReturn(ImmutableList.<IndexOperation> of(operation));
// stop processor
OperationProcessor processor = new OperationProcessor(queue);
processor.stop(false);
Source[] sources = processor.stop(false);
assertExactElementsInArray(sources, new Object[] {source});
}
public void test_waitForRunning() throws Exception {
OperationQueue queue = mock(OperationQueue.class);
when(queue.getOperations()).thenReturn(ImmutableList.<IndexOperation> of());
// start processor
final OperationProcessor processor = new OperationProcessor(queue);
new Thread() {
@Override
public void run() {
processor.run();
}
}.start();
assertEquals(true, processor.waitForRunning());
// stop
processor.stop(true);
// cannot wait for "running" again
assertEquals(false, processor.waitForRunning());
}
}