$ sudo apt install python3-pytest
$ pip3 install splinter
$ pip3 install pytest-splinter
$ pip3 install pytest-bdd
$ pip3 install pytest-xvfb  # optional, to avoid opening browser windows

• Install the latest version of geckodriver. It's usually a single binary which you can place at /usr/local/bin/geckodriver

• Install the latest version of firefox. Download and extract the latest version from the firefox website and symlink the firefox binary to /usr/local/bin.

Geckodriver will then use whatever version of firefox you symlink as /usr/local/bin/firefox.

Warning: Plinth-tester will change the configuration of the system under test, including changing the hostname and users. Therefore you should run the tests using Plinth running on a throw-away VM.

The VM should have NAT port-forwarding enabled so that 4430 on the host forwards to 443 on the guest. Plinth should be accessible from the host system at https://localhost:4430/.

Create a new user as follows:

• Username: tester
• Password: tester@123

This step is optional if a fresh install of Plinth is being tested. Plinth-tester will create the required user using Plinth's first boot process.

$ py.test

The full test suite can take a long time to run (over 15 minutes). You can also specify which tests to run, by tag or keyword:

$ py.test -k essential