lingo: allow passing custom kwargs to eopayment.request (#47477)

combo/apps/lingo/views.py

@@ -416,6 +416,13 @@ class PayMixin(object):
         if regie.can_pay_only_one_basket_item:
             item = (items or remote_items)[0]
             kwargs['subject'] = item.subject
+            # allow easy testing/use of backend specific keyword arguments
+            EOPAYMENT_REQUEST_KWARGS_PREFIX = 'eopayment_request_kwargs_'
+            if hasattr(item, 'request_data'):
+                for key in item.request_data:
+                    if key.startswith(EOPAYMENT_REQUEST_KWARGS_PREFIX):
+                        arg_name = key[len(EOPAYMENT_REQUEST_KWARGS_PREFIX):]
+                        kwargs[arg_name] = item.request_data[key]
         if regie.transaction_options:
             kwargs.update(regie.transaction_options)
         try:

tests/test_lingo_payment.py

@@ -1590,6 +1590,16 @@ def test_successfull_items_can_pay_only_one_basket_item(app, basket_page, mono_r
     assert 'bar item' in resp.text
 
 
+def test_extra_kwargs_can_pay_only_one_basket_item(app, basket_page, mono_regie, user):
+    item = BasketItem.objects.create(user=user, regie=mono_regie, amount=42, subject='foo item',
+                                     request_data={'eopayment_request_kwargs_info3': 'très fragile'})
+
+    resp = login(app).get(item.payment_url)
+    qs = urlparse.parse_qs(urlparse.urlparse(resp.location).query)
+    assert qs['subject'][0] == 'foo item', 'item.subject was not provided to eopayment'
+    assert qs['info3'][0] == 'très fragile'
+
+
 @mock.patch('combo.apps.lingo.models.BasketItem.get_items_to_be_paid')
 def test_failure_can_only_pay_one_basket_item(get_items_to_be_paid, app, mono_regie, user, user_name_id, caplog):
     item = mock.Mock(spec=['capture_date'], capture_date=None)