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

	System.out.println("testCheckAttributeSemanticsWithReqAttributeWithNullValue()");
	reqAttribute.setValue(null);
	when(session.getPerunBl().getAttributesManagerBl().getAttribute(session, facility, AttributesManager.NS_FACILITY_ATTR_DEF + ":uid-namespace")).thenReturn(reqAttribute);
	classInstance.checkAttributeSemantics(session, facility, attributeToCheck);
}