[FIX] account: tax rounding error

- Create Tax 0:
  Percentage
  Amount: 0
  Tax Included
  Tax Group 0
- Create Tax 8:
  Percentage
  Amount: 8
  Tax Included
  Tax Group 8
- Create a customer invoice with one line
  Quantity: 8.0
  Price Unit: 15.55
  Taxes: Tax 8, Tax 0 (order is important)

The tax amounts are:
  Tax 8: 9.22
  Tax 0: -0.01

If the taxes are inverted, the tax amounts
  Tax 8: 9.21
  Tax 0: 0.00

The difference is due to the rounding of the 8% tax done differently. In
the second case, the computation of the 8% tax goes through:

https://github.com/odoo/odoo/blob/8c5cd335a57c20ed5faa6b7c7630c296c1f2a5cf/addons/account/models/account.py#L1480

In the first case, the amount is recomputed in:

https://github.com/odoo/odoo/blob/8c5cd335a57c20ed5faa6b7c7630c296c1f2a5cf/addons/account/models/account.py#L1483

The rounding is different in both cases, leading to an inconsistency.

When the tax amount is zero, there is no need to save the amount in
`total_included_checkpoints`.

opw-2306676

closes odoo/odoo#55812

X-original-commit: e2776e188070221ef465a864bd2cb8dcfc971e14
Signed-off-by: Jorge Pinna Puissant (jpp) <jpp@odoo.com>

0 files changed, 0 insertions, 0 deletions