reflection_test.py 文件源码

def testFileDescriptorErrors(self):
    file_name = 'test_file_descriptor_errors.proto'
    package_name = 'test_file_descriptor_errors.proto'
    file_descriptor_proto = descriptor_pb2.FileDescriptorProto()
    file_descriptor_proto.name = file_name
    file_descriptor_proto.package = package_name
    m1 = file_descriptor_proto.message_type.add()
    m1.name = 'msg1'
    # Compiles the proto into the C++ descriptor pool
    descriptor.FileDescriptor(
        file_name,
        package_name,
        serialized_pb=file_descriptor_proto.SerializeToString())
    # Add a FileDescriptorProto that has duplicate symbols
    another_file_name = 'another_test_file_descriptor_errors.proto'
    file_descriptor_proto.name = another_file_name
    m2 = file_descriptor_proto.message_type.add()
    m2.name = 'msg2'
    with self.assertRaises(TypeError) as cm:
      descriptor.FileDescriptor(
          another_file_name,
          package_name,
          serialized_pb=file_descriptor_proto.SerializeToString())
      self.assertTrue(hasattr(cm, 'exception'), '%s not raised' %
                      getattr(cm.expected, '__name__', cm.expected))
      self.assertIn('test_file_descriptor_errors.proto', str(cm.exception))
      # Error message will say something about this definition being a
      # duplicate, though we don't check the message exactly to avoid a
      # dependency on the C++ logging code.
      self.assertIn('test_file_descriptor_errors.msg1', str(cm.exception))