Add test for DirectRTCClient in AppRTC Demo for Android

webrtc/examples/androidjunit/src/org/appspot/apprtc/TCPChannelClientTest.java

 /*
  *  Copyright 2016 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 package org.appspot.apprtc;
 
-import org.appspot.apprtc.util.LooperExecutor;
 import org.appspot.apprtc.util.RobolectricLooperExecutor;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
-import org.mockito.invocation.InvocationOnMock;
-import org.mockito.stubbing.Answer;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.annotation.Config;
 import org.robolectric.shadows.ShadowLog;
 
-import java.util.concurrent.ArrayBlockingQueue;
-import java.util.concurrent.BlockingQueue;
-
 import static org.junit.Assert.fail;
-import static org.mockito.Matchers.any;
-import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.timeout;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.verifyNoMoreInteractions;
-import static org.mockito.Mockito.when;
 
 @RunWith(RobolectricTestRunner.class)
 @Config(manifest = Config.NONE)
 public class TCPChannelClientTest {
   private static final int PORT = 8888;
   /**
    * How long we wait before trying to connect to the server. Chosen quite arbitrarily and
    * could be made smaller if need be.
    */
   private static final int SERVER_WAIT = 10;
@@ skipping 139 matching lines @@
   }
 
   /**
    * Verifies no more server or client events have been issued
    */
   private void verifyNoMoreEvents() {
     verifyNoMoreInteractions(serverEvents);
     verifyNoMoreInteractions(clientEvents);
   }
 }