The generator chooses pytest for the testing framework. All you have to do to get started is add test modules in the tests 🔗 package. Separately, you can write small tests in function docstrings using doctests. All of these tests are executed as part of the test script. The report includes coverage:

$ poetry run invoke test
pytest --cov=project_template --doctest-modules --ignore=docs
============================= test session starts =============================
platform linux -- Python 3.6.8, pytest-4.4.1, py-1.8.0, pluggy-0.9.0
rootdir: /home/jfreeman/code/project-template-python
plugins: cov-2.7.1
collected 2 items

project_template.py .                                                   [ 50%]
tests/test_greeting.py .                                                [100%]

----------- coverage: platform linux, python 3.6.8-final-0 -----------
Name                  Stmts   Miss  Cover
project_template.py       2      0   100%

========================== 2 passed in 0.07 seconds ===========================