============================= test session starts ==============================
platform linux -- Python 3.9.7, pytest-6.2.5, py-1.10.0, pluggy-0.13.1
rootdir: /build/python-pep621/src/python-pep621
collected 65 items

tests/test_rfc822.py ........                                            [ 12%]
tests/test_standard_metadata.py ........................................ [ 73%]
.................                                                        [100%]

============================== 65 passed in 1.37s ==============================