pytest_plugin: allow user specified headers in jp_ws_fetch

Author: oliver-sanders

jupyter_server/pytest_plugin.py

@@ -368,7 +368,7 @@ def client_fetch(*parts, headers={}, params={}, **kwargs):
         # Add auth keys to header
         headers.update(jp_auth_header)
         # Make request.
-        req = tornado.httpclient.HTTPRequest(url, headers=jp_auth_header, connect_timeout=120)
+        req = tornado.httpclient.HTTPRequest(url, headers=headers, connect_timeout=120)
         return tornado.websocket.websocket_connect(req)
 
     return client_fetch