Add PreCheckoutQuery.answer

tests/test_api/test_types/test_pre_checkout_query.py

@@ -0,0 +1,18 @@
+from aiogram.api.methods import AnswerPreCheckoutQuery
+from aiogram.api.types import PreCheckoutQuery, User
+
+
+class TestPreCheckoutQuery:
+    def test_answer_alias(self):
+        pre_checkout_query = PreCheckoutQuery(
+            id="id",
+            from_user=User(id=42, is_bot=False, first_name="name"),
+            currency="currency",
+            total_amount=123,
+            invoice_payload="payload",
+        )
+
+        api_method = pre_checkout_query.answer(True)
+
+        assert isinstance(api_method, AnswerPreCheckoutQuery)
+        assert api_method.pre_checkout_query_id == pre_checkout_query.id