moo.shell.tests.test_server.test_validate_password_nonexistent_user

moo.shell.tests.test_server.test_validate_password_nonexistent_user()

validate_password returns False (not an exception) for an unknown username.

Previously User.objects.get() raised User.DoesNotExist which bubbled up through the asyncssh auth handler and could leave the server in a bad state.