diff -r 6b3523f81f42 -r 26744ad37953 cubicweb/web/test/data/cubicweb_file/entities.py
--- a/cubicweb/web/test/data/cubicweb_file/entities.py	Fri Apr 05 17:21:14 2019 +0200
+++ b/cubicweb/web/test/data/cubicweb_file/entities.py	Fri Apr 05 17:58:19 2019 +0200
@@ -1,4 +1,3 @@
-from six import text_type
 from logilab.mtconverter import guess_mimetype_and_encoding
 from cubicweb.entities import AnyEntity, fetch_config
 
@@ -42,9 +41,9 @@
                 format=format, encoding=encoding,
                 fallbackencoding=self._cw.encoding)
             if format:
-                self.cw_edited['data_format'] = text_type(format)
+                self.cw_edited['data_format'] = str(format)
             if encoding:
-                self.cw_edited['data_encoding'] = text_type(encoding)
+                self.cw_edited['data_encoding'] = str(encoding)
 
 
 class UnResizeable(Exception):