@Test(expected = IllegalArgumentException.class)
	public void testNullExecutor() {
		int port = SocketUtils.findAvailableServerSocket();
		NettyHttpInboundChannelAdapter adapter = new NettyHttpInboundChannelAdapter(port);
		adapter.setExecutor(null);
	}
@author Mark Fisher
@author David Turanski
@author Jennifer Hickey
@author Gary Russell
@author Peter Rietzler
extensions/spring-xd-extension-http/src/test/java/org/springframework/integration/x/http/NettyHttpInboundChannelAdapterTests.java