@Test
public void testRead0HandleBinaryFrame() throws Exception {

   ChannelHandlerContext ctx = mock(ChannelHandlerContext.class);
   Object msg = new BinaryWebSocketFrame();
   spy.channelRead0(ctx, msg); //test
   verify(spy).channelRead0(ctx, msg);
   verify(ctx).fireChannelRead(any(ByteBuf.class));
   verifyNoMoreInteractions(spy, ctx);
}