This repository contains a worked example for testing a "hello world" python script. It is used in a TextTest tutorial.
To run these tests, first install TextTest. See TextTest Documentation
Then launch the texttest command-line test runner:
texttest -con
If you are using PyCharm or similar, there should be a Run Configuration available called "RunTextTest" or "RunTextTestWindows". If you have used the Windows installer, use the "RunTextTestWindows" configuration, otherwise use the RunTextTest configuration to run the tests.