@Test
	public void testDeleteUnknownStream() throws Exception {
		mockMvc.perform(delete("/streams/definitions/not-there")).andExpect(status().isNotFound());
	}
Tests REST compliance of streams-related end-points. Unlike {@link StreamsControllerIntegrationTests}, instead of
mocks, this class provides access to actual repositories: {@link ZooKeeperStreamRepository} and
{@link ZooKeeperStreamDefinitionRepository}.

@author Gunnar Hillert
@author Glenn Renfro
@author David Turanski
@author Florent Biville
spring-xd-dirt/src/test/java/org/springframework/xd/dirt/rest/StreamsControllerIntegrationWithRepositoryTests.java