Prepare account credit note for Tryton 8.0

tests/test_module.py

@@ -0,0 +1,54 @@
+
+from decimal import Decimal
+import unittest
+
+from trytond.exceptions import UserError
+from trytond.modules.account_credit_note.invoice import Invoice
+from trytond.tests.test_tryton import ModuleTestCase
+
+
+class MockInvoice:
+    untaxed_amount = Decimal('100.00')
+    total_amount = Decimal('118.00')
+
+
+class AccountCreditNoteTestCase(ModuleTestCase):
+    "Test Account Credit Note module"
+    module = 'account_credit_note'
+
+
+class AccountCreditNoteLogicTestCase(unittest.TestCase):
+
+    def test_full_factor(self):
+        self.assertEqual(
+            Invoice._credit_partial_compute_factor(
+                MockInvoice(), 'full', None, None, 'total'),
+            Decimal('1'))
+
+    def test_percent_factor_supports_user_and_internal_values(self):
+        self.assertEqual(
+            Invoice._credit_partial_compute_factor(
+                MockInvoice(), 'percent', Decimal('20'), None, 'total'),
+            Decimal('0.2'))
+        self.assertEqual(
+            Invoice._credit_partial_compute_factor(
+                MockInvoice(), 'percent', Decimal('0.20'), None, 'total'),
+            Decimal('0.20'))
+
+    def test_amount_factor_uses_selected_basis(self):
+        self.assertEqual(
+            Invoice._credit_partial_compute_factor(
+                MockInvoice(), 'amount', None, Decimal('59'), 'total'),
+            Decimal('0.5'))
+        self.assertEqual(
+            Invoice._credit_partial_compute_factor(
+                MockInvoice(), 'amount', None, Decimal('25'), 'untaxed'),
+            Decimal('0.25'))
+
+    def test_amount_can_not_exceed_basis(self):
+        with self.assertRaises(UserError):
+            Invoice._credit_partial_compute_factor(
+                MockInvoice(), 'amount', None, Decimal('119'), 'total')
+
+
+del ModuleTestCase