def METHOD_NAME(self):
    metadata_directive, new_file_info, new_content_type = CopyManager.establish_sse_c_file_metadata(
        MetadataDirectiveMode.COPY,
        destination_file_info=None,
        destination_content_type=None,
        destination_server_side_encryption=SSE_C_AES,
        source_server_side_encryption=SSE_C_AES_2,
        source_file_info={
            'some_key': 'some_value',
            SSE_C_KEY_ID_FILE_INFO_KEY_NAME: 'some-id-2'
        },
        source_content_type='text/plain',
    )
    self.assertEqual(
        (
            MetadataDirectiveMode.REPLACE, {
                'some_key': 'some_value',
                SSE_C_KEY_ID_FILE_INFO_KEY_NAME: 'some-id'
            }, 'text/plain'
        ), (metadata_directive, new_file_info, new_content_type)
    )