def METHOD_NAME(self):
    file_info = {}
    content_type = 'text/plain'
    metadata_directive, new_file_info, new_content_type = CopyManager.establish_sse_c_file_metadata(
        MetadataDirectiveMode.COPY,
        destination_file_info=file_info,
        destination_content_type=content_type,
        destination_server_side_encryption=SSE_B2_AES,
        source_server_side_encryption=None,
        source_file_info=None,
        source_content_type=None,
    )
    self.assertEqual(
        (MetadataDirectiveMode.COPY, {}, content_type),
        (metadata_directive, new_file_info, new_content_type)
    )