@Test(expected=WrongReferenceAttributeValueException.class)
public void testCheckAttributeSemanticsOfUnknownUser() throws Exception{

	System.out.println("testCheckAttributeSemanticsOfUnknownUser()");
	when(session.getPerunBl().getUsersManagerBl().getAllowedResources(any(PerunSession.class), any(Facility.class), any(User.class))).thenReturn(new ArrayList<>());
	when(session.getPerunBl().getAttributesManagerBl().getAttribute(any(PerunSession.class), any(Resource.class), anyString())).thenReturn(listOfShells);
	Attribute atr = new Attribute();
	atr.setValue(("/bin/bash"));
	classInstance.checkAttributeSemantics(session, user, facility, atr);
}