builder: Add possibility to specify from date for test purpose

product/ERP5/mixin/builder.py

@@ -291,7 +291,8 @@ class BuilderMixin(XMLObject, Amount, Predicate):
       **kw):
     from Products.ERP5Type.Document import newTempMovement
     portal = self.getPortalObject()
-    from_date = DateTime().earliestTime()
+    if not from_date:
+      from_date = DateTime().earliestTime()
 
     # Initiate Conditions taken from Yusei T. Original Script
     # XXX to be cleaned