Implement delivery.getQuantity() == 0.

When RSPL/RPPL Invoice Lines are on the same SIT TML as its
corresponding SO/PO IL movements, the sum may be 0 and there is nothing
wrong about it. This was implemented in Legacy Simulation.

product/ERP5/Document/FloatEquivalenceTester.py

@@ -79,6 +79,15 @@ class FloatEquivalenceTester(Predicate, EquivalenceTesterMixin):
     prevision_value = self._getTestedPropertyValue(prevision_movement,
                                                    tested_property) or 0.0
 
+    return self._comparePrevisionDecisionValue(prevision_movement,
+                                               prevision_value,
+                                               decision_movement,
+                                               decision_value)
+
+  def _comparePrevisionDecisionValue(self,
+                                     prevision_movement, prevision_value,
+                                     decision_movement, decision_value):
+    tested_property = self.getTestedProperty()
     if prevision_movement.getDelivery() == decision_movement.getRelativeUrl():
       # use delivery_ratio if specified
       if self.getProperty('use_delivery_ratio'):

product/ERP5/Document/NetConvertedQuantityEquivalenceTester.py

@@ -45,6 +45,32 @@ class NetConvertedQuantityEquivalenceTester(FloatEquivalenceTester):
   security = ClassSecurityInfo()
   security.declareObjectProtected(Permissions.AccessContentsInformation)
 
+  def _compare(self, prevision_movement, decision_movement):
+    tested_property = self.getTestedProperty()
+    if getattr(decision_movement, 'isPropertyRecorded',
+               lambda x:False)(tested_property):
+      decision_value = decision_movement.getRecordedProperty(tested_property) or 0.0
+    else:
+      decision_value = self._getTestedPropertyValue(decision_movement,
+                                                    tested_property) or 0.0
+
+    # 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:
+      prevision_value = sum([
+        sm.getMappedProperty('corrected_quantity')
+        for sm in decision_movement.getDeliveryRelatedValueList(
+            portal_type='Simulation Movement')])
+    else:
+      prevision_value = self._getTestedPropertyValue(prevision_movement,
+                                                     tested_property) or 0.0
+
+    return self._comparePrevisionDecisionValue(prevision_movement,
+                                               prevision_value,
+                                               decision_movement,
+                                               decision_value)
+
   def getUpdatablePropertyDict(self, prevision_movement, decision_movement):
     """
     Returns a list of properties to update on decision_movement