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__init__.py Normal file
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# -*- coding: utf-8 -*-
from . import models

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__manifest__.py Normal file
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# -*- coding: utf-8 -*-
{
'name': 'Vendor Payment Diff Amount',
'version': '17.0.1.0.0',
'category': 'Accounting/Accounting',
'summary': 'Support payment deductions for vendor payments (withholding tax, fees, etc.)',
'description': """
Vendor Payment Deduction Management
====================================
This module extends Odoo 17's vendor payment functionality to support payment deductions
such as withholding tax, payment fees, and other charges.
Key Features:
-------------
* Add deduction amount (Amount Substract) to vendor payments
* Specify account for recording deductions (Substract Account)
* Automatically calculate final payment amount after deductions
* Create proper journal entries with deduction lines
* Validate deduction amounts and account selection
* Seamless integration with existing payment workflows
The module allows accountants to record withholding tax and other charges during payment
processing, ensuring accurate accounting records and proper general ledger entries.
""",
'author': 'Suherdy Yacob',
'website': 'https://www.yourcompany.com',
'license': 'LGPL-3',
'depends': [
'account',
],
'data': [
'views/account_payment_views.xml',
],
'installable': True,
'application': False,
'auto_install': False,
}

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# -*- coding: utf-8 -*-
from . import account_payment

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# -*- coding: utf-8 -*-
from odoo import models, fields, api, _
from odoo.exceptions import ValidationError
class AccountPayment(models.Model):
_inherit = 'account.payment'
# Flag to prevent infinite recursion during synchronization
_skip_amount_sync = False
amount_substract = fields.Monetary(
string='Amount Substract',
currency_field='currency_id',
help='Amount to be deducted from the payment (e.g., withholding tax, fees)',
readonly=False,
)
substract_account_id = fields.Many2one(
'account.account',
string='Substract Account',
domain="[('account_type', 'not in', ['asset_cash', 'asset_cash_bank']), ('deprecated', '=', False), ('company_id', '=', company_id)]",
help='Account where the deduction will be recorded',
readonly=False,
)
final_payment_amount = fields.Monetary(
string='Final Payment Amount',
currency_field='currency_id',
compute='_compute_final_payment_amount',
store=True,
help='Actual amount to be paid after deductions',
)
@api.depends('amount', 'amount_substract', 'currency_id')
def _compute_final_payment_amount(self):
for payment in self:
amount_substract = payment.amount_substract or 0.0
currency = payment.currency_id or payment.company_id.currency_id
payment.final_payment_amount = currency.round(payment.amount - amount_substract)
@api.constrains('amount', 'amount_substract')
def _check_amount_substract(self):
for payment in self:
if payment.amount_substract and payment.amount_substract < 0:
raise ValidationError(_("Amount Substract cannot be negative."))
if payment.amount_substract and payment.amount_substract > payment.amount:
raise ValidationError(_("Amount Substract cannot be greater than the payment amount."))
@api.constrains('amount_substract', 'substract_account_id')
def _check_substract_account(self):
for payment in self:
if payment.amount_substract > 0 and not payment.substract_account_id:
raise ValidationError(_("Please select a Substract Account when Amount Substract is specified."))
def _synchronize_from_moves(self, changed_fields):
"""
Override to prevent amount synchronization when we have a substract amount.
When we have a substract amount, the bank credit line is reduced to final_payment_amount,
but we want to keep the payment amount at the original value (not sync it down).
"""
# If we have a substract amount, we need to handle the sync differently
if self.amount_substract and self.amount_substract > 0:
# Store the original amount before sync
original_amount = self.amount
original_substract = self.amount_substract
# Call parent sync
result = super()._synchronize_from_moves(changed_fields)
# Restore the original amount if it was changed by sync
if self.amount != original_amount:
# Use write to update without triggering another sync
super(AccountPayment, self).write({
'amount': original_amount,
'amount_substract': original_substract,
})
# Force recomputation of final_payment_amount
self._compute_final_payment_amount()
return result
else:
return super()._synchronize_from_moves(changed_fields)
def _prepare_move_line_default_vals(self, write_off_line_vals=None, force_balance=None):
"""
Override to add substract account line when amount_substract > 0.
This method modifies the journal entry to:
1. Keep the payable debit line at the original amount
2. Add a new credit line for the substract account (reduction)
3. Reduce the bank credit line to final_payment_amount
The resulting entry for outbound payment (amount=1000, substract=100):
- Payable: debit 1000 (original amount)
- Substract: credit 100 (amount_substract - reduction)
- Bank: credit 900 (final_payment_amount)
Total: debit 1000 = credit 1000 (balanced)
Requirements: 4.1, 4.2, 4.3, 4.4, 4.5
"""
# Get standard line values from parent
line_vals_list = super()._prepare_move_line_default_vals(write_off_line_vals, force_balance)
# Only modify if we have a deduction amount and account
if self.amount_substract and self.amount_substract > 0 and self.substract_account_id:
# For outbound payments, we need to:
# - Keep the payable debit (counterpart line) at the original amount
# - Add a credit line for the substract account (reduction)
# - Reduce the bank credit (liquidity line) to final_payment_amount
if self.payment_type == 'outbound':
# Check if substract line already exists (to prevent duplicates)
has_substract_line = any(
line.get('account_id') == self.substract_account_id.id
for line in line_vals_list
)
if not has_substract_line:
# The liquidity line is the first line (index 0) - this is the bank account
# The counterpart line is the second line (index 1) - this is the payable account
liquidity_line = line_vals_list[0]
# Convert amount_substract to company currency for the journal entry
substract_balance = self.currency_id._convert(
self.amount_substract,
self.company_id.currency_id,
self.company_id,
self.date,
)
# Adjust the liquidity (bank) line - reduce the credit by amount_substract
# For outbound payment:
# - Original: amount_currency = -amount, credit = amount
# - Modified: amount_currency = -final_payment_amount, credit = final_payment_amount
liquidity_line['amount_currency'] += self.amount_substract # Reduce the negative amount (make it less negative)
liquidity_line['credit'] -= substract_balance # Reduce the credit
# Create the substract account line (credit - reduction)
substract_line_name = _('Payment Deduction: %s') % self.substract_account_id.name
substract_line = {
'name': substract_line_name,
'date_maturity': self.date,
'amount_currency': -self.amount_substract, # Negative because it's a credit
'currency_id': self.currency_id.id,
'debit': 0.0,
'credit': substract_balance,
'partner_id': self.partner_id.id,
'account_id': self.substract_account_id.id,
}
# Add the substract line to the list
line_vals_list.append(substract_line)
return line_vals_list

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# -*- coding: utf-8 -*-
from . import test_account_payment

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# -*- coding: utf-8 -*-
from odoo import fields
from odoo.tests import TransactionCase
from odoo.exceptions import ValidationError
from hypothesis import given, strategies as st, settings
class TestAccountPayment(TransactionCase):
"""Test cases for vendor payment deduction functionality"""
def setUp(self):
super(TestAccountPayment, self).setUp()
# Create test partner (supplier)
self.partner = self.env['res.partner'].create({
'name': 'Test Vendor',
'supplier_rank': 1,
})
# Get or create bank journal
self.journal = self.env['account.journal'].search([
('type', '=', 'bank'),
('company_id', '=', self.env.company.id)
], limit=1)
if not self.journal:
self.journal = self.env['account.journal'].create({
'name': 'Test Bank',
'type': 'bank',
'code': 'TBNK',
'company_id': self.env.company.id,
})
# Create substract account (expense account)
self.substract_account = self.env['account.account'].create({
'name': 'Withholding Tax Account',
'code': 'WHT001',
'account_type': 'expense',
'company_id': self.env.company.id,
})
@given(
amount=st.floats(min_value=0.01, max_value=1000000, allow_nan=False, allow_infinity=False),
amount_substract=st.floats(min_value=0, max_value=1000000, allow_nan=False, allow_infinity=False)
)
@settings(max_examples=100, deadline=None)
def test_property_final_amount_calculation(self, amount, amount_substract):
"""
**Feature: vendor-payment-diff-amount, Property 2: Final payment amount calculation**
**Validates: Requirements 2.1, 2.2**
Property: For any vendor payment, the final_payment_amount should always equal
(amount - amount_substract), where amount_substract defaults to 0 if not set.
"""
# Ensure amount_substract <= amount for valid payment
amount_substract = min(amount_substract, amount)
# If amount_substract > 0, we need to provide a substract_account_id to pass validation
payment_vals = {
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': amount,
'amount_substract': amount_substract,
'journal_id': self.journal.id,
}
# Add substract account if amount_substract > 0
if amount_substract > 0:
payment_vals['substract_account_id'] = self.substract_account.id
payment = self.env['account.payment'].create(payment_vals)
# The final_payment_amount is computed and stored with Odoo's currency rounding
# We need to verify that the computation is correct by checking that
# the stored value equals what we'd get if we computed and rounded it ourselves
currency = payment.currency_id or self.env.company.currency_id
# Note: The input values (amount and amount_substract) are also Monetary fields
# so they get rounded when stored. We need to use the rounded values for comparison.
actual_amount = payment.amount
actual_substract = payment.amount_substract or 0.0
# Compute expected value from the actual (rounded) stored values
expected = currency.round(actual_amount - actual_substract)
# The actual value should match
self.assertEqual(
payment.final_payment_amount,
expected,
msg=f"Final payment amount {payment.final_payment_amount} != expected {expected} (from {actual_amount} - {actual_substract})"
)
@given(
amount=st.floats(min_value=0.01, max_value=1000000, allow_nan=False, allow_infinity=False),
amount_substract=st.floats(min_value=0.01, max_value=2000000, allow_nan=False, allow_infinity=False)
)
@settings(max_examples=100, deadline=None)
def test_property_amount_validation(self, amount, amount_substract):
"""
**Feature: vendor-payment-diff-amount, Property 9: Amount validation**
**Validates: Requirements 6.1**
Property: For any payment where amount_substract > amount, the system should
raise a validation error and prevent posting.
"""
# Only test cases where substract exceeds amount
if amount_substract <= amount:
return
# Should raise ValidationError when trying to create payment with invalid amount
with self.assertRaises(ValidationError) as context:
self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': amount,
'amount_substract': amount_substract,
'substract_account_id': self.substract_account.id,
'journal_id': self.journal.id,
})
self.assertIn('cannot be greater than', str(context.exception).lower())
@given(
amount=st.floats(min_value=0.01, max_value=1000000, allow_nan=False, allow_infinity=False),
amount_substract=st.floats(min_value=-1000000, max_value=-0.01, allow_nan=False, allow_infinity=False)
)
@settings(max_examples=100, deadline=None)
def test_property_negative_amount_validation(self, amount, amount_substract):
"""
**Feature: vendor-payment-diff-amount, Property 10: Negative amount validation**
**Validates: Requirements 6.2**
Property: For any payment where amount_substract < 0, the system should
raise a validation error and prevent posting.
"""
# Should raise ValidationError when trying to create payment with negative amount
with self.assertRaises(ValidationError) as context:
self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': amount,
'amount_substract': amount_substract,
'substract_account_id': self.substract_account.id,
'journal_id': self.journal.id,
})
self.assertIn('cannot be negative', str(context.exception).lower())
@given(
amount=st.floats(min_value=0.01, max_value=1000000, allow_nan=False, allow_infinity=False),
amount_substract=st.floats(min_value=0.01, max_value=1000000, allow_nan=False, allow_infinity=False)
)
@settings(max_examples=100, deadline=None)
def test_property_account_requirement_validation(self, amount, amount_substract):
"""
**Feature: vendor-payment-diff-amount, Property 11: Account requirement validation**
**Validates: Requirements 6.3**
Property: For any payment where amount_substract > 0 and substract_account_id
is not set, the system should raise a validation error and prevent posting.
"""
# Ensure amount_substract is positive and <= amount
amount_substract = min(amount_substract, amount)
if amount_substract <= 0:
return
# Should raise ValidationError when trying to create payment without account
with self.assertRaises(ValidationError) as context:
self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': amount,
'amount_substract': amount_substract,
'substract_account_id': False, # No account selected
'journal_id': self.journal.id,
})
self.assertIn('select a substract account', str(context.exception).lower())
@given(
amount=st.floats(min_value=0.01, max_value=1000000, allow_nan=False, allow_infinity=False),
amount_substract=st.floats(min_value=0.01, max_value=1000000, allow_nan=False, allow_infinity=False)
)
@settings(max_examples=100, deadline=None)
def test_property_journal_entry_debit_balance(self, amount, amount_substract):
"""
**Feature: vendor-payment-diff-amount, Property 6: Journal entry debit balance**
**Validates: Requirements 4.2, 4.3, 4.4**
Property: For any posted payment with deductions, the sum of debit amounts should
equal (amount + amount_substract), which should also equal the credit amount.
"""
# Ensure amount_substract < amount for valid payment
amount_substract = min(amount_substract, amount * 0.99)
# Create and post payment with deduction
payment = self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': amount,
'amount_substract': amount_substract,
'substract_account_id': self.substract_account.id,
'journal_id': self.journal.id,
})
# Post the payment to create journal entry
payment.action_post()
# Get the journal entry
move = payment.move_id
self.assertTrue(move, "Journal entry should be created")
# Calculate totals
total_debit = sum(move.line_ids.mapped('debit'))
total_credit = sum(move.line_ids.mapped('credit'))
# Get currency for rounding
currency = payment.currency_id or self.env.company.currency_id
# Property 6: Total debits should equal total credits (balanced entry)
self.assertAlmostEqual(
total_debit,
total_credit,
places=2,
msg=f"Total debits {total_debit} should equal total credits {total_credit}"
)
# Verify the total equals the original amount
# The entry should be:
# - Payable: debit = amount (full amount)
# - Substract: credit = amount_substract (reduction)
# - Bank: credit = final_payment_amount
# Total: debit (amount) = credit (amount_substract + final_payment_amount) = balanced
expected_total = currency.round(payment.amount)
self.assertAlmostEqual(
total_debit,
expected_total,
places=2,
msg=f"Total debits {total_debit} should equal amount {expected_total}"
)
@given(
amount=st.floats(min_value=0.01, max_value=1000000, allow_nan=False, allow_infinity=False),
amount_substract=st.floats(min_value=0.01, max_value=1000000, allow_nan=False, allow_infinity=False)
)
@settings(max_examples=100, deadline=None)
def test_property_bank_credit_amount_accuracy(self, amount, amount_substract):
"""
**Feature: vendor-payment-diff-amount, Property 7: Bank credit amount accuracy**
**Validates: Requirements 4.2, 4.3, 4.4**
Property: For any posted payment with amount_substract > 0, the credit line for
the bank account should equal the original amount (not final_payment_amount).
This ensures the entry balances: bank credit = payable debit + substract debit.
"""
# Ensure amount_substract < amount for valid payment
amount_substract = min(amount_substract, amount * 0.99)
# Create and post payment with deduction
payment = self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': amount,
'amount_substract': amount_substract,
'substract_account_id': self.substract_account.id,
'journal_id': self.journal.id,
})
# Post the payment to create journal entry
payment.action_post()
# Get the journal entry
move = payment.move_id
self.assertTrue(move, "Journal entry should be created")
# Find the bank account line (liquidity line)
bank_account = payment.outstanding_account_id
bank_lines = move.line_ids.filtered(lambda l: l.account_id == bank_account)
# Get currency for rounding
currency = payment.currency_id or self.env.company.currency_id
# The bank line should be credited with the final_payment_amount (not the original amount)
# This is because we're paying 'final_payment_amount' from the bank
# The full 'amount' goes to payable (debit), with 'amount_substract' as a credit reduction
expected_credit = currency.round(payment.final_payment_amount)
actual_credit = sum(bank_lines.mapped('credit'))
self.assertAlmostEqual(
actual_credit,
expected_credit,
places=2,
msg=f"Bank credit {actual_credit} should equal final_payment_amount {expected_credit}"
)
def test_unit_journal_entry_with_deduction(self):
"""
Unit test: Verify journal entry structure when payment has deduction.
Tests Requirements 4.1, 4.2, 4.3, 4.4
"""
# Create payment with deduction
payment = self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': 1000.0,
'amount_substract': 100.0,
'substract_account_id': self.substract_account.id,
'journal_id': self.journal.id,
})
# Verify final_payment_amount is calculated correctly
self.assertEqual(payment.final_payment_amount, 900.0)
# Post the payment
payment.action_post()
# Get the journal entry
move = payment.move_id
self.assertTrue(move, "Journal entry should be created")
# Verify we have at least 3 lines (payable, substract, bank)
# Note: Odoo may create additional lines for rounding or other purposes
self.assertGreaterEqual(len(move.line_ids), 3, "Should have at least 3 journal items")
# Verify the entry balances
total_debit = sum(move.line_ids.mapped('debit'))
total_credit = sum(move.line_ids.mapped('credit'))
self.assertAlmostEqual(total_debit, total_credit, places=2,
msg="Journal entry should be balanced")
# Find each line
bank_account = payment.outstanding_account_id
bank_line = move.line_ids.filtered(lambda l: l.account_id == bank_account)
substract_line = move.line_ids.filtered(lambda l: l.account_id == self.substract_account)
payable_line = move.line_ids.filtered(lambda l: l.account_id == payment.destination_account_id)
self.assertEqual(len(bank_line), 1, "Should have one bank line")
# Note: There might be multiple substract lines if Odoo creates duplicates during sync
# We'll check the total credit amount instead
self.assertGreater(len(substract_line), 0, "Should have at least one substract line")
self.assertEqual(len(payable_line), 1, "Should have one payable line")
# Verify amounts with new structure:
# - Payable: debit 1000 (full amount)
# - Substract: credit 100 (reduction) - may have multiple lines, check total
# - Bank: credit 900 (final payment amount)
# Bank should be credited with final_payment_amount (900)
self.assertAlmostEqual(bank_line.credit, 900.0, places=2)
self.assertEqual(bank_line.debit, 0.0)
# Substract account should be credited with amount_substract (100) - it's a reduction
# Check total credit in case there are multiple lines
total_substract_credit = sum(substract_line.mapped('credit'))
self.assertAlmostEqual(total_substract_credit, 100.0, places=2)
# Payable should be debited with full amount (1000)
self.assertAlmostEqual(payable_line.debit, 1000.0, places=2)
self.assertEqual(payable_line.credit, 0.0)
def test_unit_journal_entry_without_deduction(self):
"""
Unit test: Verify standard journal entry when no deduction.
Tests Requirement 4.5
"""
# Create payment without deduction
payment = self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': 1000.0,
'amount_substract': 0.0,
'journal_id': self.journal.id,
})
# Post the payment
payment.action_post()
# Get the journal entry
move = payment.move_id
# Verify we have 2 lines (standard Odoo: payable and bank)
self.assertEqual(len(move.line_ids), 2, "Should have 2 journal items (standard)")
# Verify no substract line
substract_line = move.line_ids.filtered(lambda l: l.account_id == self.substract_account)
self.assertEqual(len(substract_line), 0, "Should not have substract line")
def test_property_field_visibility_consistency(self):
"""
**Feature: vendor-payment-diff-amount, Property 1: Field visibility consistency**
**Validates: Requirements 1.1, 1.2, 1.3**
Property: For any vendor payment with payment_type 'outbound', the deduction fields
(amount_substract, substract_account_id, final_payment_amount) should be visible;
for any payment with payment_type 'inbound', these fields should be hidden.
"""
# Get the view definition
view = self.env.ref('vendor_payment_diff_amount.view_account_payment_form_inherit')
self.assertTrue(view, "View extension should exist")
# Parse the view architecture to verify field visibility conditions
arch = view.arch
# Verify final_payment_amount field has correct invisible attribute
self.assertIn('final_payment_amount', arch, "final_payment_amount field should be in view")
self.assertIn('invisible="payment_type != \'outbound\'"', arch,
"final_payment_amount should have invisible condition for non-outbound payments")
# Verify amount_substract field has correct invisible attribute
self.assertIn('amount_substract', arch, "amount_substract field should be in view")
self.assertIn('invisible="payment_type != \'outbound\'"', arch,
"amount_substract should have invisible condition for non-outbound payments")
# Verify substract_account_id field has correct invisible attribute
self.assertIn('substract_account_id', arch, "substract_account_id field should be in view")
self.assertIn('invisible="payment_type != \'outbound\'"', arch,
"substract_account_id should have invisible condition for non-outbound payments")
# Test with actual payment records to verify field behavior
# Create outbound payment (vendor payment)
outbound_payment = self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': 1000.0,
'journal_id': self.journal.id,
})
# Verify fields are accessible on outbound payment
self.assertTrue(hasattr(outbound_payment, 'amount_substract'),
"amount_substract should be accessible on outbound payment")
self.assertTrue(hasattr(outbound_payment, 'substract_account_id'),
"substract_account_id should be accessible on outbound payment")
self.assertTrue(hasattr(outbound_payment, 'final_payment_amount'),
"final_payment_amount should be accessible on outbound payment")
# Create inbound payment (customer payment)
inbound_payment = self.env['account.payment'].create({
'payment_type': 'inbound',
'partner_type': 'customer',
'partner_id': self.partner.id,
'amount': 1000.0,
'journal_id': self.journal.id,
})
# Verify fields are still accessible on inbound payment (they exist but are hidden in UI)
self.assertTrue(hasattr(inbound_payment, 'amount_substract'),
"amount_substract should exist on inbound payment (hidden in UI)")
self.assertTrue(hasattr(inbound_payment, 'substract_account_id'),
"substract_account_id should exist on inbound payment (hidden in UI)")
self.assertTrue(hasattr(inbound_payment, 'final_payment_amount'),
"final_payment_amount should exist on inbound payment (hidden in UI)")
def test_unit_field_visibility_outbound_vs_inbound(self):
"""
Unit test: Test field visibility for outbound vs inbound payments.
Tests Requirements 1.1, 1.2, 1.3
"""
# Create outbound payment (vendor payment - "Send")
outbound_payment = self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': 1000.0,
'journal_id': self.journal.id,
})
# Verify fields are accessible on outbound payment
self.assertTrue(hasattr(outbound_payment, 'amount_substract'))
self.assertTrue(hasattr(outbound_payment, 'substract_account_id'))
self.assertTrue(hasattr(outbound_payment, 'final_payment_amount'))
# Verify payment_type is outbound
self.assertEqual(outbound_payment.payment_type, 'outbound')
# Create inbound payment (customer payment - "Receive")
inbound_payment = self.env['account.payment'].create({
'payment_type': 'inbound',
'partner_type': 'customer',
'partner_id': self.partner.id,
'amount': 1000.0,
'journal_id': self.journal.id,
})
# Verify fields exist on inbound payment (but would be hidden in UI)
self.assertTrue(hasattr(inbound_payment, 'amount_substract'))
self.assertTrue(hasattr(inbound_payment, 'substract_account_id'))
self.assertTrue(hasattr(inbound_payment, 'final_payment_amount'))
# Verify payment_type is inbound
self.assertEqual(inbound_payment.payment_type, 'inbound')
def test_unit_final_amount_calculation(self):
"""
Unit test: Test final amount calculation with various values.
Tests Requirements 2.1, 2.2
"""
# Test with amount_substract > 0
payment1 = self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': 1000.0,
'amount_substract': 150.0,
'substract_account_id': self.substract_account.id,
'journal_id': self.journal.id,
})
self.assertEqual(payment1.final_payment_amount, 850.0,
"Final amount should be 1000 - 150 = 850")
# Test with amount_substract = 0
payment2 = self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': 2000.0,
'amount_substract': 0.0,
'journal_id': self.journal.id,
})
self.assertEqual(payment2.final_payment_amount, 2000.0,
"Final amount should equal amount when substract is 0")
# Test with amount_substract = None (not set)
payment3 = self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': 3000.0,
'journal_id': self.journal.id,
})
self.assertEqual(payment3.final_payment_amount, 3000.0,
"Final amount should equal amount when substract is not set")
# Test with different amounts
payment4 = self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': 5000.0,
'amount_substract': 500.0,
'substract_account_id': self.substract_account.id,
'journal_id': self.journal.id,
})
self.assertEqual(payment4.final_payment_amount, 4500.0,
"Final amount should be 5000 - 500 = 4500")
def test_unit_account_domain_filtering(self):
"""
Unit test: Test account domain filtering.
Tests Requirements 3.2, 3.3, 3.4
"""
# Get the field definition
payment_model = self.env['account.payment']
field = payment_model._fields['substract_account_id']
# Verify domain exists
self.assertTrue(hasattr(field, 'domain'), "substract_account_id should have a domain")
# Create test accounts of different types
# In Odoo 17, 'asset_cash' is used for bank and cash accounts
bank_account = self.env['account.account'].create({
'name': 'Test Bank Account',
'code': 'BANK001',
'account_type': 'asset_cash',
'company_id': self.env.company.id,
})
deprecated_account = self.env['account.account'].create({
'name': 'Deprecated Account',
'code': 'DEP001',
'account_type': 'expense',
'deprecated': True,
'company_id': self.env.company.id,
})
# Query accounts that match the domain
# Note: The domain in the model uses 'asset_cash_bank' but Odoo 17 uses 'asset_cash'
# We test with the actual domain from the model
domain = [
('account_type', 'not in', ['asset_cash', 'asset_cash_bank']),
('deprecated', '=', False),
('company_id', '=', self.env.company.id)
]
valid_accounts = self.env['account.account'].search(domain)
# Verify bank/cash account is excluded
self.assertNotIn(bank_account, valid_accounts,
"Bank/cash accounts should be excluded from domain")
# Verify deprecated account is excluded
self.assertNotIn(deprecated_account, valid_accounts,
"Deprecated accounts should be excluded from domain")
# Verify our substract account is included
self.assertIn(self.substract_account, valid_accounts,
"Expense accounts should be included in domain")
def test_unit_validation_amount_exceeds(self):
"""
Unit test: Test validation when amount_substract > amount.
Tests Requirement 6.1
"""
# Try to create payment with amount_substract > amount
with self.assertRaises(ValidationError) as context:
self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': 1000.0,
'amount_substract': 1500.0,
'substract_account_id': self.substract_account.id,
'journal_id': self.journal.id,
})
# Verify error message
self.assertIn('cannot be greater than', str(context.exception).lower())
def test_unit_validation_negative_amount(self):
"""
Unit test: Test validation for negative amount_substract.
Tests Requirement 6.2
"""
# Try to create payment with negative amount_substract
with self.assertRaises(ValidationError) as context:
self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': 1000.0,
'amount_substract': -100.0,
'substract_account_id': self.substract_account.id,
'journal_id': self.journal.id,
})
# Verify error message
self.assertIn('cannot be negative', str(context.exception).lower())
def test_unit_validation_missing_account(self):
"""
Unit test: Test validation when substract_account_id is missing.
Tests Requirement 6.3
"""
# Try to create payment with amount_substract > 0 but no account
with self.assertRaises(ValidationError) as context:
self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': 1000.0,
'amount_substract': 100.0,
'substract_account_id': False,
'journal_id': self.journal.id,
})
# Verify error message
self.assertIn('select a substract account', str(context.exception).lower())
def test_unit_payment_cancellation_with_deduction(self):
"""
Unit test: Test payment cancellation with deduction.
Tests Requirement 5.4
"""
# Create and post payment with deduction
payment = self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': 1000.0,
'amount_substract': 100.0,
'substract_account_id': self.substract_account.id,
'journal_id': self.journal.id,
})
payment.action_post()
# Verify payment is posted
self.assertEqual(payment.state, 'posted')
# Get the original move
original_move = payment.move_id
self.assertTrue(original_move)
self.assertGreaterEqual(len(original_move.line_ids), 3, "Should have at least 3 lines")
# Cancel the payment
payment.action_cancel()
# Verify payment is cancelled
self.assertEqual(payment.state, 'cancel')
# Verify the move is cancelled/reversed
# In Odoo, cancelled payments typically have their moves cancelled
self.assertTrue(original_move.state == 'cancel' or
len(original_move.reversal_move_id) > 0,
"Move should be cancelled or reversed")
def test_unit_recalculation_on_field_changes(self):
"""
Unit test: Test recalculation when amount or amount_substract changes.
Tests Requirements 2.4, 2.5
"""
# Create payment
payment = self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': 1000.0,
'amount_substract': 100.0,
'substract_account_id': self.substract_account.id,
'journal_id': self.journal.id,
})
# Verify initial calculation
self.assertEqual(payment.final_payment_amount, 900.0)
# Change amount field
payment.write({'amount': 2000.0})
# Verify final_payment_amount is recalculated
self.assertEqual(payment.final_payment_amount, 1900.0,
"Final amount should be recalculated when amount changes")
# Change amount_substract field
payment.write({'amount_substract': 200.0})
# Verify final_payment_amount is recalculated again
self.assertEqual(payment.final_payment_amount, 1800.0,
"Final amount should be recalculated when amount_substract changes")
# Set amount_substract to 0
payment.write({'amount_substract': 0.0})
# Verify final_payment_amount equals amount
self.assertEqual(payment.final_payment_amount, 2000.0,
"Final amount should equal amount when substract is 0")
def test_integration_complete_payment_flow_with_vendor_bill(self):
"""
Integration test: Test complete payment flow with vendor bill.
Tests Requirements 5.1, 5.2, 5.3
This test verifies:
- Creating a vendor bill
- Registering payment with deduction
- Bill is marked as paid
- Reconciliation is correct
- Bank balance is reduced by final_payment_amount
"""
# Create a vendor bill
bill = self.env['account.move'].create({
'move_type': 'in_invoice',
'partner_id': self.partner.id,
'invoice_date': fields.Date.today(),
'invoice_line_ids': [(0, 0, {
'name': 'Test Product',
'quantity': 1,
'price_unit': 1000.0,
})],
})
# Post the bill
bill.action_post()
# Verify bill is posted and has correct amount
self.assertEqual(bill.state, 'posted', "Bill should be posted")
self.assertEqual(bill.amount_total, 1000.0, "Bill amount should be 1000")
self.assertEqual(bill.payment_state, 'not_paid', "Bill should be unpaid initially")
# We'll get the bank account from the payment's outstanding_account_id after posting
# Register payment with deduction
# Create payment linked to the bill
payment = self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': 1000.0,
'amount_substract': 100.0,
'substract_account_id': self.substract_account.id,
'journal_id': self.journal.id,
'date': fields.Date.today(),
})
# Verify final_payment_amount is calculated correctly
self.assertEqual(payment.final_payment_amount, 900.0,
"Final payment amount should be 900 (1000 - 100)")
# Post the payment
payment.action_post()
# Verify payment is posted
self.assertEqual(payment.state, 'posted', "Payment should be posted")
# Reconcile the payment with the bill
# Get the payable lines from both bill and payment
bill_payable_line = bill.line_ids.filtered(
lambda l: l.account_id.account_type == 'liability_payable' and not l.reconciled
)
payment_payable_line = payment.move_id.line_ids.filtered(
lambda l: l.account_id.account_type == 'liability_payable' and not l.reconciled
)
# Reconcile the lines
lines_to_reconcile = bill_payable_line | payment_payable_line
lines_to_reconcile.reconcile()
# Verify bill is marked as paid
# Note: The bill shows as 'paid' because the full amount (1000)
# was applied to payable. The substract account (100) is a credit reduction.
# This is the correct behavior per Requirements 4.2 and 4.3.
self.assertEqual(bill.payment_state, 'paid',
"Bill should be marked as paid (1000 applied to payable)")
# Verify reconciliation is correct - the lines should be fully reconciled
self.assertTrue(payment_payable_line.reconciled, "Payment payable line should be reconciled")
# Verify bank balance is reduced by final_payment_amount (900), not the original amount
# The bank account is credited with final_payment_amount (900) in the journal entry
bank_account = payment.outstanding_account_id
bank_lines = self.env['account.move.line'].search([
('account_id', '=', bank_account.id),
('move_id', '=', payment.move_id.id),
])
bank_credit = sum(bank_lines.mapped('credit'))
self.assertAlmostEqual(bank_credit, 900.0, places=2,
msg=f"Bank should be credited with 900 (final_payment_amount), "
f"but was credited with {bank_credit}")
# Verify the substract account has the deduction amount as a credit (reduction)
substract_balance = sum(self.env['account.move.line'].search([
('account_id', '=', self.substract_account.id),
('move_id', '=', payment.move_id.id),
]).mapped('credit'))
self.assertAlmostEqual(substract_balance, 100.0, places=2,
msg="Substract account should have credit of 100")
def test_integration_multi_payment_scenario(self):
"""
Integration test: Test multi-payment scenario with partial payments.
Tests Requirements 5.1, 5.2, 5.3
This test verifies:
- Creating a vendor bill for large amount
- Making multiple partial payments with deductions
- Bill is fully reconciled
- Total bank reduction equals sum of final amounts
"""
# Create a vendor bill for 10,000
bill = self.env['account.move'].create({
'move_type': 'in_invoice',
'partner_id': self.partner.id,
'invoice_date': fields.Date.today(),
'invoice_line_ids': [(0, 0, {
'name': 'Large Order',
'quantity': 1,
'price_unit': 10000.0,
})],
})
# Post the bill
bill.action_post()
# Verify bill is posted
self.assertEqual(bill.state, 'posted', "Bill should be posted")
self.assertEqual(bill.amount_total, 10000.0, "Bill amount should be 10,000")
self.assertEqual(bill.payment_state, 'not_paid', "Bill should be unpaid initially")
# We'll get the bank account from the payments' outstanding_account_id after posting
# Make first partial payment: 5,000 with 500 deduction
payment1 = self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': 5000.0,
'amount_substract': 500.0,
'substract_account_id': self.substract_account.id,
'journal_id': self.journal.id,
'date': fields.Date.today(),
})
# Verify final_payment_amount for first payment
self.assertEqual(payment1.final_payment_amount, 4500.0,
"First payment final amount should be 4500 (5000 - 500)")
# Post first payment
payment1.action_post()
# Reconcile first payment with bill
bill_payable_line = bill.line_ids.filtered(
lambda l: l.account_id.account_type == 'liability_payable' and not l.reconciled
)
payment1_payable_line = payment1.move_id.line_ids.filtered(
lambda l: l.account_id.account_type == 'liability_payable' and not l.reconciled
)
lines_to_reconcile1 = bill_payable_line | payment1_payable_line
lines_to_reconcile1.reconcile()
# Verify bill is partially paid
self.assertEqual(bill.payment_state, 'partial', "Bill should be partially paid")
# Make second partial payment: 5,000 with 500 deduction
payment2 = self.env['account.payment'].create({
'payment_type': 'outbound',
'partner_type': 'supplier',
'partner_id': self.partner.id,
'amount': 5000.0,
'amount_substract': 500.0,
'substract_account_id': self.substract_account.id,
'journal_id': self.journal.id,
'date': fields.Date.today(),
})
# Verify final_payment_amount for second payment
self.assertEqual(payment2.final_payment_amount, 4500.0,
"Second payment final amount should be 4500 (5000 - 500)")
# Post second payment
payment2.action_post()
# Reconcile second payment with bill
bill_payable_line = bill.line_ids.filtered(
lambda l: l.account_id.account_type == 'liability_payable' and not l.reconciled
)
payment2_payable_line = payment2.move_id.line_ids.filtered(
lambda l: l.account_id.account_type == 'liability_payable' and not l.reconciled
)
lines_to_reconcile2 = bill_payable_line | payment2_payable_line
lines_to_reconcile2.reconcile()
# Verify bill is fully reconciled (paid)
# Note: The bill is for 10,000. We made two payments:
# - Payment 1: amount=5000, substract=500, payable debit=5000
# - Payment 2: amount=5000, substract=500, payable debit=5000
# Total applied to payable: 5000 + 5000 = 10000
# The bill will show as 'paid' because the full 10000 was applied to payable.
# The substract amounts (500 + 500 = 1000) are credit reductions.
self.assertEqual(bill.payment_state, 'paid',
"Bill should be fully paid (10000 applied to payable)")
# Verify the payment lines are reconciled
self.assertTrue(payment1_payable_line.reconciled,
"Payment 1 payable line should be reconciled")
self.assertTrue(payment2_payable_line.reconciled,
"Payment 2 payable line should be reconciled")
# Verify total bank reduction equals sum of final_payment_amounts (4500 + 4500 = 9000)
# The bank account is credited with the final_payment_amounts in the journal entries
bank_account = payment1.outstanding_account_id
bank_lines = self.env['account.move.line'].search([
('account_id', '=', bank_account.id),
('move_id', 'in', [payment1.move_id.id, payment2.move_id.id]),
])
total_bank_credit = sum(bank_lines.mapped('credit'))
expected_credit = payment1.final_payment_amount + payment2.final_payment_amount
self.assertAlmostEqual(total_bank_credit, expected_credit, places=2,
msg=f"Total bank credit should be {expected_credit} "
f"(sum of final_payment_amounts), but was {total_bank_credit}")
# Verify the substract account has total deduction amount (500 + 500 = 1000) as credits
substract_balance = sum(self.env['account.move.line'].search([
('account_id', '=', self.substract_account.id),
('move_id', 'in', [payment1.move_id.id, payment2.move_id.id]),
]).mapped('credit'))
self.assertAlmostEqual(substract_balance, 1000.0, places=2,
msg="Substract account should have total debit of 1000 (500 + 500)")

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views/account_payment_views.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<odoo>
<record id="view_account_payment_form_inherit" model="ir.ui.view">
<field name="name">account.payment.form.inherit</field>
<field name="model">account.payment</field>
<field name="inherit_id" ref="account.view_account_payment_form"/>
<field name="arch" type="xml">
<div name="amount_div" position="after">
<label for="amount_substract" string="Amount Substract"
invisible="payment_type != 'outbound'"/>
<div class="o_row" invisible="payment_type != 'outbound'">
<field name="amount_substract"
widget="monetary"
options="{'currency_field': 'currency_id'}"
readonly="state != 'draft'"
force_save="1"/>
</div>
<label for="substract_account_id" string="Substract Account"
invisible="payment_type != 'outbound'"/>
<div class="o_row" invisible="payment_type != 'outbound'">
<field name="substract_account_id"
readonly="state != 'draft'"
force_save="1"/>
</div>
<label for="final_payment_amount" string="Final Payment Amount"
invisible="payment_type != 'outbound'"/>
<div class="o_row" invisible="payment_type != 'outbound'">
<field name="final_payment_amount"
widget="monetary"
options="{'currency_field': 'currency_id'}"
readonly="1"
force_save="1"/>
</div>
</div>
</field>
</record>
</odoo>