Given your unittests are in the tests
directory:
1# run a specific test module
2python -m unittest tests.<module>
3
4# run a specific test suite
5python -m unittest tests.<module>.<class>
6
7# run a specific test
8python -m unittest tests.<module>.<class>.<test>
9
10# run tests matching a given pattern
11python -m unittest discover -s tests -p <pattern>