Running Pytest

pytest test_mymath.py

========= test session starts ==========
platform darwin -- Python 3.6.3, pytest-3.3.0, py-1.5.2, pluggy-0.6.0
rootdir: ../python-pair-programming-and-tdd-workshop/test, inifile:
plugins: cov-2.5.1
collected 2 items

test_mymath.py ..                                    [100%]

======= 2 passed in 0.02 seconds =======