[RD-35945] Fixed encoding for python3

Author: Mathew Seymour

tests/e2etests/chrome/test_interface.py

@@ -254,7 +254,7 @@ def test_standard_auth_page(self):
 
         self.assertTrue(len(responses_received) >= 2)  # Headed browser creates extra requests
         self.assertIn(200, responses_received)
-        self.assertNotIn(401, responses_received)
+        self.assertNotIn(401, responses_received)  # Devtools genuinely doesn't report these
 
 
 class Test_ChromeInterface_set_baic_auth_headed(

tests/e2etests/testsite/start.py

@@ -1,7 +1,6 @@
 import multiprocessing
-from base64 import b64decode
-
 import time
+from base64 import b64decode
 
 import cherrypy
 
@@ -63,10 +62,10 @@ def is_authenticated(authorized_username, authorized_password):
 
         if "Authorization" in cherrypy.request.headers:
 
-            this_username, this_password = tuple(
-                b64decode(cherrypy.request.headers["Authorization"].split("Basic ")[1]).split(":")
-            )
-
+            auth_string = str(cherrypy.request.headers["Authorization"])
+            secret = auth_string.split("Basic ")[1]
+            credentials = b64decode(secret).decode()
+            this_username, this_password = tuple(credentials.split(":"))
             if (this_username == authorized_username) and (this_password == authorized_password):
                 return True
         return False