Tester decision movement can be a SM.

Followup of 4b664ba: When comparing Trade Model Rule input_movement from
AmountGenerator and decision which is a Simulation Movement.

This fixes test_13_AddAllowanceForOutsourcingOrder.

product/ERP5/Document/NetConvertedQuantityEquivalenceTester.py

@@ -57,7 +57,8 @@ class NetConvertedQuantityEquivalenceTester(FloatEquivalenceTester):
     # XXX: QuantityDivergenceTester from Legacy Simulation: A delivery
     # quantity of 0 is an exceptional case that we cannot really handle with
     # the current approach of delivery ratio.
-    if decision_value == 0.0:
+    if (decision_movement.getPortalType() != 'Simulation Movement' and
+        decision_value == 0.0):
       prevision_value = sum([
         sm.getMappedProperty('corrected_quantity')
         for sm in decision_movement.getDeliveryRelatedValueList(