add proxy test to test_notebook
test_notebook.ipynb
should also test the status of the proxy because important services rely on it (dask dashboard).
As @anton-akhmerov suggested, having something like:
import http.server
import socketserver
PORT = 8000
Handler = http.server.SimpleHTTPRequestHandler
with socketserver.TCPServer(("", PORT), Handler) as httpd:
print("serving at port", PORT)
httpd.serve_forever()
And then go to /user-redirect/proxy/8000
after running this in a cell.