From 6c65624942fa2e746ff11ec7cd48832c6fee12db Mon Sep 17 00:00:00 2001
From: Min RK <benjaminrk@gmail.com>
Date: Tue, 26 Jan 2021 11:53:39 +0100
Subject: [PATCH] [TST] Do not implicitly create users in auth_header

implicit user creation results in surprising behavior when the user shouldn't exist
---
 jupyterhub/tests/utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/jupyterhub/tests/utils.py b/jupyterhub/tests/utils.py
index b99ba4ea..e48d30b5 100644
--- a/jupyterhub/tests/utils.py
+++ b/jupyterhub/tests/utils.py
@@ -121,7 +121,7 @@ def auth_header(db, name):
     """Return header with user's API authorization token."""
     user = find_user(db, name)
     if user is None:
-        user = add_user(db, name=name)
+        raise KeyError(f"No such user: {name}")
     token = user.new_api_token()
     return {'Authorization': 'token %s' % token}