use getReference, this make test results much more easier to read in case of failure

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27807 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/tests/testBPMCore.py

@@ -1757,8 +1757,9 @@ class TestBPMTestCases(TestBPMMixin):
     trade_model_line_list = trade_condition.getTradeModelLineComposedList()
 
     # XXX: This is only one good possible sorting
-    self.assertEquals([q.getRelativeUrl() for q in trade_model_line_list],
-        [q.getRelativeUrl() for q in [D, E, B, F, G, C, A]])
+    self.assertEquals([q.getReference() for q in trade_model_line_list],
+        [q.getReference() for q in [D, E, B, F, G, C, A]])
+
 
   def test_getAggregatedAmountList(self):
     """