Laurent Smet
1ca5c01b36
Since the base in compute_all could be negative but is signed to perform the computation, the price_unit should follow the same logic and be signed when evaluating a python tax. Before this commit, the price_unit was equivalent to the base line balance and then, was negative in case of a customer invoice. E.g. For an out_invoice of 100, the price_unit is 100 but the balance is -100 for the base line. Then, the computation is done using a base of 100 but having a sign of -1. However, when evaluating a python tax dependent of the price_unit (here the balance), the price_unit was negative and then, the tax amount will have a wrong sign at the end.
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