The file unit_tests_lib.py contains several functions: fetch_rows and fetch_column, which need a test harness.
Write a test class (a subclass of unittest.TestCase) that provides two tests, one for each of these functions.
You can use the file data1.db as a test database. Find out about its contents by running the following:
$ python unit_tests_lib.py data1.db
When you call fetch_column, you will need the name of one of the columns in this database. The column names are "name", "desc", and "cat".
Create and load a test suite using the unittest framework.
Run your test suite from the command line.
What you will learn: