Install dbus-test-runner by entering the following commands in the terminal:
sudo apt update sudo apt install dbus-test-runner
Description:
Runs tests under a new DBus session
A simple little executable for running a couple of programs under a new DBus session.
Homepage: https://launchpad.net/dbus-test-runner
Version: 15.04.0+16.10.20160906-0ubuntu1
Section: universe/gnome