[IMP] payment_demo: add support partial capture

support partial capture feature in demo payment
task-2803352

closes odoo/odoo#117356

Signed-off-by: Antoine Vandevenne (anv) <anv@odoo.com>

addons/payment_demo/models/payment_provider.py

@@ -25,7 +25,7 @@ class PaymentProvider(models.Model):
         super()._compute_feature_support_fields()
         self.filtered(lambda p: p.code == 'demo').update({
             'support_fees': True,
-            'support_manual_capture': 'full_only',
+            'support_manual_capture': 'partial',
             'support_refund': 'partial',
             'support_tokenization': True,
         })

addons/payment_demo/models/payment_transaction.py

@@ -103,12 +103,13 @@ class PaymentTransaction(models.Model):
         if self.provider_code != 'demo':
             return child_capture_tx
 
+        tx = child_capture_tx or self
         notification_data = {
-            'reference': self.reference,
+            'reference': tx.reference,
             'simulated_state': 'done',
             'manual_capture': True,  # Distinguish manual captures from regular one-step captures.
         }
-        self._handle_notification_data('demo', notification_data)
+        tx._handle_notification_data('demo', notification_data)
 
         return child_capture_tx
 
@@ -118,8 +119,9 @@ class PaymentTransaction(models.Model):
         if self.provider_code != 'demo':
             return child_void_tx
 
-        notification_data = {'reference': self.reference, 'simulated_state': 'cancel'}
-        self._handle_notification_data('demo', notification_data)
+        tx = child_void_tx or self
+        notification_data = {'reference': tx.reference, 'simulated_state': 'cancel'}
+        tx._handle_notification_data('demo', notification_data)
 
         return child_void_tx
 

addons/payment_demo/tests/test_payment_transaction.py

@@ -80,3 +80,23 @@ class TestPaymentTransaction(PaymentDemoCommon, PaymentHttpCommon):
             tx.token_id = self._create_token(demo_simulated_state=state)
             tx._send_payment_request()
             self.assertEqual(tx.state, tx.token_id.demo_simulated_state)
+
+    def test_send_full_capture_request_does_not_create_capture_tx(self):
+        self.provider.capture_manually = True
+        source_tx = self._create_transaction(flow='direct', state='authorized')
+        child_tx = source_tx._send_capture_request()
+        self.assertFalse(
+            child_tx, msg="Full capture should not create a child transaction."
+        )
+
+    def test_send_partial_capture_request_creates_capture_tx(self):
+        self.provider.capture_manually = True
+        source_tx = self._create_transaction(flow='direct', state='authorized')
+        child_tx = source_tx._send_capture_request(amount_to_capture=10)
+        self.assertTrue(
+            source_tx.child_transaction_ids,
+            msg="Partial capture should create a child transaction and linked it to the source tx.",
+        )
+        self.assertEqual(
+            child_tx.amount, 10, msg="Child transaction should have the requested amount."
+        )