fix tests

lib/crypto/receipt.py

@@ -67,7 +67,7 @@ def cef(environ, app, msg, longer):
          'cef.device_version': getattr(settings, 'CEF_DEVICE_VERSION', '0'),
          'cef.file': getattr(settings, 'CEF_FILE', 'syslog'), }
 
-    kwargs = {'username': getattr(request, 'amo_user', ''),
+    kwargs = {'username': getattr(environ, 'amo_user', ''),
               'signature': 'RECEIPT%s' % msg.upper(),
               'msg': longer, 'config': c,
               'cs2': app, 'cs2Label': 'ReceiptTransaction'}