account_invoice: Test both reverse operations to invalidate ratio and divisor

issue8966.diff

@@ -0,0 +1,20 @@
+Index: payment_term.py
+===================================================================
+--- a/trytond/trytond/modules/account_invoice/payment_term.py
++++ b/trytond/trytond/modules/account_invoice/payment_term.py
+@@ -222,11 +222,10 @@
+                     gettext('account_invoice'
+                         '.msg_payment_term_invalid_ratio_divisor',
+                         line=line.rec_name))
+-            ratio = line.ratio
+-            divisor = line.divisor
+-            line.on_change_ratio()
+-            line.on_change_divisor()
+-            if (line.divisor != divisor) or (line.ratio != ratio):
++            if (line.ratio != round(
++                        1 / line.divisor, cls.ratio.digits[1])
++                    and line.divisor != round(
++                        1 / line.ratio, cls.divisor.digits[1])):
+                 raise PaymentTermValidationError(
+                     gettext('account_invoice'
+                         '.msg_payment_term_invalid_ratio_divisor',

series

@@ -42,5 +42,4 @@ issue7805.diff # [stock] [stock_lot_sled] Allow configuring which quantity is gr
 issue8860.diff # [stock_forecast] stock_forecast does not spread all the quantities
 
 statement_of_account.diff # [account] Cumulate balance of previous fiscal years
-
-# issue8880_trytond.diff # [trytond] Position new record based on order
+issue8966.diff # [account_invoice] suport 1/3 on payment_term