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/*
* Copyright (C) 2017 The Android Open Source Project
*
* 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 com.android.server;
import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.reset;
import static org.mockito.Mockito.timeout;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import android.content.ContentResolver;
import android.content.Context;
import android.net.nsd.NsdManager;
import android.net.nsd.NsdServiceInfo;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Looper;
import android.os.Message;
import androidx.test.filters.SmallTest;
import androidx.test.runner.AndroidJUnit4;
import com.android.server.NsdService.DaemonConnection;
import com.android.server.NsdService.DaemonConnectionSupplier;
import com.android.server.NsdService.NativeCallbackReceiver;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.ArgumentCaptor;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
// TODOs:
// - test client can send requests and receive replies
// - test NSD_ON ENABLE/DISABLED listening
@RunWith(AndroidJUnit4.class)
@SmallTest
public class NsdServiceTest {
static final int PROTOCOL = NsdManager.PROTOCOL_DNS_SD;
long mTimeoutMs = 100; // non-final so that tests can adjust the value.
@Mock Context mContext;
@Mock ContentResolver mResolver;
@Mock NsdService.NsdSettings mSettings;
@Mock DaemonConnection mDaemon;
NativeCallbackReceiver mDaemonCallback;
HandlerThread mThread;
TestHandler mHandler;
@Before
public void setUp() throws Exception {
MockitoAnnotations.initMocks(this);
mThread = new HandlerThread("mock-service-handler");
mThread.start();
mHandler = new TestHandler(mThread.getLooper());
when(mContext.getContentResolver()).thenReturn(mResolver);
}
@After
public void tearDown() throws Exception {
if (mThread != null) {
mThread.quit();
mThread = null;
}
}
@Test
public void testClientsCanConnectAndDisconnect() {
when(mSettings.isEnabled()).thenReturn(true);
NsdService service = makeService();
NsdManager client1 = connectClient(service);
verify(mDaemon, timeout(100).times(1)).start();
NsdManager client2 = connectClient(service);
client1.disconnect();
client2.disconnect();
verify(mDaemon, timeout(mTimeoutMs).times(1)).stop();
client1.disconnect();
client2.disconnect();
}
@Test
public void testClientRequestsAreGCedAtDisconnection() {
when(mSettings.isEnabled()).thenReturn(true);
when(mDaemon.execute(any())).thenReturn(true);
NsdService service = makeService();
NsdManager client = connectClient(service);
verify(mDaemon, timeout(100).times(1)).start();
NsdServiceInfo request = new NsdServiceInfo("a_name", "a_type");
request.setPort(2201);
// Client registration request
NsdManager.RegistrationListener listener1 = mock(NsdManager.RegistrationListener.class);
client.registerService(request, PROTOCOL, listener1);
verifyDaemonCommand("register 2 a_name a_type 2201");
// Client discovery request
NsdManager.DiscoveryListener listener2 = mock(NsdManager.DiscoveryListener.class);
client.discoverServices("a_type", PROTOCOL, listener2);
verifyDaemonCommand("discover 3 a_type");
// Client resolve request
NsdManager.ResolveListener listener3 = mock(NsdManager.ResolveListener.class);
client.resolveService(request, listener3);
verifyDaemonCommand("resolve 4 a_name a_type local.");
// Client disconnects
client.disconnect();
verify(mDaemon, timeout(mTimeoutMs).times(1)).stop();
// checks that request are cleaned
verifyDaemonCommands("stop-register 2", "stop-discover 3", "stop-resolve 4");
client.disconnect();
}
NsdService makeService() {
DaemonConnectionSupplier supplier = (callback) -> {
mDaemonCallback = callback;
return mDaemon;
};
NsdService service = new NsdService(mContext, mSettings, mHandler, supplier);
verify(mDaemon, never()).execute(any(String.class));
return service;
}
NsdManager connectClient(NsdService service) {
return new NsdManager(mContext, service);
}
void verifyDaemonCommands(String... wants) {
verifyDaemonCommand(String.join(" ", wants), wants.length);
}
void verifyDaemonCommand(String want) {
verifyDaemonCommand(want, 1);
}
void verifyDaemonCommand(String want, int n) {
ArgumentCaptor<Object> argumentsCaptor = ArgumentCaptor.forClass(Object.class);
verify(mDaemon, timeout(mTimeoutMs).times(n)).execute(argumentsCaptor.capture());
String got = "";
for (Object o : argumentsCaptor.getAllValues()) {
got += o + " ";
}
assertEquals(want, got.trim());
// rearm deamon for next command verification
reset(mDaemon);
when(mDaemon.execute(any())).thenReturn(true);
}
public static class TestHandler extends Handler {
public Message lastMessage;
TestHandler(Looper looper) {
super(looper);
}
@Override
public void handleMessage(Message msg) {
lastMessage = obtainMessage();
lastMessage.copyFrom(msg);
}
}
}
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