@Test
public void testCreateCodeSystem() {

	CodeSystemDto created = mock(CodeSystemDto.class);
	when(created.getDisplayName()).thenReturn("displayName");
	CodeSystem codeSystem = mock(CodeSystem.class);
	when(codeSystemRepository.save(any(CodeSystem.class))).thenReturn(
			codeSystem);
	when(valueSetMgmtHelper.createCodeSystemDtoFromEntity(codeSystem))
			.thenReturn(created);
	Assert.assertEquals(vst.create(created), created);
}