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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package org.chromium.mojo.system.impl;
import android.support.test.filters.SmallTest;
import org.chromium.mojo.MojoTestCase;
import org.chromium.mojo.system.Core;
import org.chromium.mojo.system.Handle;
import org.chromium.mojo.system.InvalidHandle;
import org.chromium.mojo.system.MessagePipeHandle;
import org.chromium.mojo.system.MojoException;
import org.chromium.mojo.system.MojoResult;
import org.chromium.mojo.system.Pair;
import org.chromium.mojo.system.Watcher;
import org.chromium.mojo.system.Watcher.Callback;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;
/**
* Testing the Watcher.
*/
public class WatcherImplTest extends MojoTestCase {
private List<Handle> mHandlesToClose = new ArrayList<Handle>();
private Watcher mWatcher;
private Core mCore;
/**
* @see MojoTestCase#setUp()
*/
@Override
protected void setUp() throws Exception {
super.setUp();
mWatcher = new WatcherImpl();
mCore = CoreImpl.getInstance();
}
/**
* @see MojoTestCase#tearDown()
*/
@Override
protected void tearDown() throws Exception {
mWatcher.destroy();
MojoException toThrow = null;
for (Handle handle : mHandlesToClose) {
try {
handle.close();
} catch (MojoException e) {
if (toThrow == null) {
toThrow = e;
}
}
}
if (toThrow != null) {
throw toThrow;
}
super.tearDown();
}
private void addHandlePairToClose(Pair<? extends Handle, ? extends Handle> handles) {
mHandlesToClose.add(handles.first);
mHandlesToClose.add(handles.second);
}
private static class WatcherResult implements Callback {
private int mResult = Integer.MIN_VALUE;
/**
* @see Callback#onResult(int)
*/
@Override
public void onResult(int result) {
this.mResult = result;
}
/**
* @return the result
*/
public int getResult() {
return mResult;
}
}
/**
* Testing {@link Watcher} implementation.
*/
@SmallTest
public void testCorrectResult() {
// Checking a correct result.
Pair<MessagePipeHandle, MessagePipeHandle> handles = mCore.createMessagePipe(null);
addHandlePairToClose(handles);
final WatcherResult watcherResult = new WatcherResult();
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
mWatcher.start(handles.first, Core.HandleSignals.READABLE, watcherResult);
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
handles.second.writeMessage(
ByteBuffer.allocateDirect(1), null, MessagePipeHandle.WriteFlags.NONE);
runLoopUntilIdle();
assertEquals(MojoResult.OK, watcherResult.getResult());
}
/**
* Testing {@link Watcher} implementation.
*/
@SmallTest
public void testClosingPeerHandle() {
// Closing the peer handle.
Pair<MessagePipeHandle, MessagePipeHandle> handles = mCore.createMessagePipe(null);
addHandlePairToClose(handles);
final WatcherResult watcherResult = new WatcherResult();
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
mWatcher.start(handles.first, Core.HandleSignals.READABLE, watcherResult);
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
runLoopUntilIdle();
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
handles.second.close();
runLoopUntilIdle();
assertEquals(MojoResult.FAILED_PRECONDITION, watcherResult.getResult());
}
/**
* Testing {@link Watcher} implementation.
*/
@SmallTest
public void testClosingWatchedHandle() {
// Closing the peer handle.
Pair<MessagePipeHandle, MessagePipeHandle> handles = mCore.createMessagePipe(null);
addHandlePairToClose(handles);
final WatcherResult watcherResult = new WatcherResult();
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
mWatcher.start(handles.first, Core.HandleSignals.READABLE, watcherResult);
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
runLoopUntilIdle();
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
handles.first.close();
runLoopUntilIdle();
assertEquals(MojoResult.CANCELLED, watcherResult.getResult());
}
/**
* Testing {@link Watcher} implementation.
*/
@SmallTest
public void testInvalidHandle() {
// Closing the peer handle.
Pair<MessagePipeHandle, MessagePipeHandle> handles = mCore.createMessagePipe(null);
addHandlePairToClose(handles);
final WatcherResult watcherResult = new WatcherResult();
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
handles.first.close();
assertEquals(MojoResult.INVALID_ARGUMENT,
mWatcher.start(handles.first, Core.HandleSignals.READABLE, watcherResult));
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
runLoopUntilIdle();
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
}
/**
* Testing {@link Watcher} implementation.
*/
@SmallTest
public void testDefaultInvalidHandle() {
final WatcherResult watcherResult = new WatcherResult();
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
assertEquals(MojoResult.INVALID_ARGUMENT,
mWatcher.start(InvalidHandle.INSTANCE, Core.HandleSignals.READABLE, watcherResult));
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
runLoopUntilIdle();
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
}
/**
* Testing {@link Watcher} implementation.
*/
@SmallTest
public void testCancel() {
// Closing the peer handle.
Pair<MessagePipeHandle, MessagePipeHandle> handles = mCore.createMessagePipe(null);
addHandlePairToClose(handles);
final WatcherResult watcherResult = new WatcherResult();
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
mWatcher.start(handles.first, Core.HandleSignals.READABLE, watcherResult);
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
runLoopUntilIdle();
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
mWatcher.cancel();
runLoopUntilIdle();
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
handles.second.writeMessage(
ByteBuffer.allocateDirect(1), null, MessagePipeHandle.WriteFlags.NONE);
runLoopUntilIdle();
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
}
/**
* Testing {@link Watcher} implementation.
*/
@SmallTest
public void testImmediateCancelOnInvalidHandle() {
// Closing the peer handle.
Pair<MessagePipeHandle, MessagePipeHandle> handles = mCore.createMessagePipe(null);
addHandlePairToClose(handles);
final WatcherResult watcherResult = new WatcherResult();
handles.first.close();
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
mWatcher.start(handles.first, Core.HandleSignals.READABLE, watcherResult);
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
mWatcher.cancel();
runLoopUntilIdle();
assertEquals(Integer.MIN_VALUE, watcherResult.getResult());
}
}
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