public void websocketUnregisterNonRegistered() {
final EmbeddedChannel channel = createWebSocketChannel(factory);
sendWebSocketHttpUpgradeRequest(sessionUrl, channel);
sendWebSocketHelloFrame(UUIDUtil.newUAID(), channel);
final UnregisterResponse registerResponse = websocketUnRegisterFrame("notRegistered", channel);
assertThat(registerResponse.getMessageType(), equalTo(MessageType.Type.UNREGISTER));
assertThat(registerResponse.getChannelId(), equalTo("notRegistered"));
assertThat(registerResponse.getStatus().getCode(), is(200));
channel.close();
}