Python Testing with pytest

Running pytest

With pytest installed, we can run test_passing(). This is what it looks like when it’s run:

$ cd /path/to/code/ch1
$ pytest test_one.py
========================= test session starts ==========================
collected 1 item

test_one.py .                                                    [100%]

========================== 1 passed in 0.01s ===========================

The dot after test_one.py means that one test was run and it passed. The [100%] is a percentage indicator showing how much of the test suite is done so far. Because there is just one test in the test session, one test equals 100% of the tests. If you need more information, you can use -v or --verbose:

$ pytest -v test_one.py
===================== test session starts ====================== ...