import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
+import com.google.protobuf.TextFormat.ParseException;
import com.google.protobuf.util.JsonFormat;
import io.grpc.ManagedChannel;
import io.grpc.netty.NettyChannelBuilder;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.apache.commons.io.IOUtils;
-import org.json.simple.parser.ParseException;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;