but it's pretty intuitive. You can consult the documentation of Python's
``unittest`` library for details.
-Note that the return code for the test-runner script is
the total number of
+Note that the return code for the test-runner script is number of
failed and erroneous tests. If all the tests pass, the return code is 0. This
feature is useful if you're using the test-runner script in a shell script and
need to test for success or failure at that level.