@Test
public void testCleanUp() throws Exception {

	TestingAuthenticationToken authentication = new TestingAuthenticationToken(new Object(), new Object(),
			Collections.<GrantedAuthority> emptyList());
	SecurityContextHolder.getContext().setAuthentication(authentication);
	CleanupCallback cleanupCallback = new CleanupCallback();
	callbackHandler.handleInternal(cleanupCallback);
	Assert.assertNull("Authentication created", SecurityContextHolder.getContext().getAuthentication());
}