Remove deprecated reflection.py usages from test

PiperOrigin-RevId: 662703556

python/google/protobuf/internal/reflection_test.py

@@ -15,22 +15,23 @@ import gc
 import operator
 import struct
 import sys
-import warnings
 import unittest
+import warnings
 
-from google.protobuf import descriptor_pb2
 from google.protobuf import descriptor
+from google.protobuf import descriptor_pb2
 from google.protobuf import message
+from google.protobuf import message_factory
 from google.protobuf import reflection
 from google.protobuf import text_format
 from google.protobuf.internal import api_implementation
+from google.protobuf.internal import decoder
+from google.protobuf.internal import message_set_extensions_pb2
 from google.protobuf.internal import more_extensions_pb2
 from google.protobuf.internal import more_messages_pb2
-from google.protobuf.internal import message_set_extensions_pb2
-from google.protobuf.internal import wire_format
 from google.protobuf.internal import test_util
 from google.protobuf.internal import testing_refleaks
-from google.protobuf.internal import decoder
+from google.protobuf.internal import wire_format
 from google.protobuf.internal import _parameterized
 from google.protobuf import unittest_import_pb2
 from google.protobuf import unittest_mset_pb2
@@ -1567,7 +1568,8 @@ class Proto2ReflectionTest(unittest.TestCase):
     prius.owners.extend(['bob', 'susan'])
 
     serialized_prius = prius.SerializeToString()
-    new_prius = reflection.ParseMessage(desc, serialized_prius)
+    new_prius = message_factory.GetMessageClass(desc)()
+    new_prius.ParseFromString(serialized_prius)
     self.assertIsNot(new_prius, prius)
     self.assertEqual(prius, new_prius)
 
@@ -3306,7 +3308,7 @@ class ClassAPITest(unittest.TestCase):
         enum_types=[], extensions=[],
         # pylint: disable=protected-access
         create_key=descriptor._internal_create_key)
-    reflection.MakeClass(parent_desc)
+    message_factory.GetMessageClass(parent_desc)
 
   def _GetSerializedFileDescriptor(self, name):
     """Get a serialized representation of a test FileDescriptorProto.
@@ -3399,7 +3401,7 @@ class ClassAPITest(unittest.TestCase):
     file_descriptor.ParseFromString(self._GetSerializedFileDescriptor('B'))
     msg_descriptor = descriptor.MakeDescriptor(
         file_descriptor.message_type[0])
-    msg_class = reflection.MakeClass(msg_descriptor)
+    msg_class = message_factory.GetMessageClass(msg_descriptor)
     msg = msg_class()
     msg_str = (
         'flat: 0 '
@@ -3415,7 +3417,7 @@ class ClassAPITest(unittest.TestCase):
     file_descriptor.ParseFromString(self._GetSerializedFileDescriptor('C'))
     msg_descriptor = descriptor.MakeDescriptor(
         file_descriptor.message_type[0])
-    msg_class = reflection.MakeClass(msg_descriptor)
+    msg_class = message_factory.GetMessageClass(msg_descriptor)
     msg = msg_class()
     msg_str = (
         'bar {'