Test Coverage for Flask application doesnt work
I assume your setup-method sets app.config['Testing'] = True. Otherwise Flask-login is going to redirect you to your login-view.
Edit But this does not seem to be the issue here, as you get a 404-Error. If login-required was the problem is would be an unauthorized - 401 error. Instead I wrongfully assumed you registered your function with a 'DELETE' method, so my provided url_for statement was wrong.
You can find the flashed message in the session under the key _flashes. You could try:
with self.client as c: rv = self.client.get(url_for('delete', id=e1.id), follow_redirects=True) print rv.data with c.session_transaction() as session: self.assertTrue("delete done !." in session['_flashes'])You also might want to take a look at Flask Testing