Summary
Running the same tests with nox against Python 3.6, 3.7 and 3.8 shows wrong report being generated for Python 3.8. This seems to be caused by the fact that the number of reported lines for some sources is wrong.
Expected vs actual result
The report generated with Python 3.6 seems fine:
----------- coverage: platform linux, python 3.6.9-final-0 -----------
Name Stmts Miss Cover Missing
-----------------------------------------------------------
austin/__init__.py 60 15 75% 86-87, 92-99, 114, 122, 134, 155, 165, 182
austin/aio.py 32 2 94% 84, 107
austin/cli.py 63 2 97% 160, 171
austin/format/__init__.py 0 0 100%
austin/format/speedscope.py 75 17 77% 112, 119, 160-197, 201
austin/simple.py 29 2 93% 72, 93
austin/stats.py 122 3 98% 223, 255, 273
austin/threads.py 17 2 88% 81, 93
-----------------------------------------------------------
TOTAL 398 43 89%
This is what the same tests produce with Python 3.8
----------- coverage: platform linux, python 3.8.3-final-0 -----------
Name Stmts Miss Cover Missing
-----------------------------------------------------------
austin/__init__.py 74 42 43% 86-87, 92-122, 134, 155-1447
austin/aio.py 44 35 20% 329-1657
austin/cli.py 126 93 26% 160-171, 306-2957
austin/format/__init__.py 0 0 100%
austin/format/speedscope.py 113 71 37% 160-1477
austin/simple.py 34 25 26% 319-866
austin/stats.py 132 9 93% 223, 255, 273, 329-691
austin/threads.py 17 2 88% 81, 93
-----------------------------------------------------------
TOTAL 540 277 49%
Note how some sources in the 3.8 case are reported to be ridiculously larger than in the 3.6 case.
Reproducer
It seems to happen with every test run.
Versions
pytest (5.4.2)
pytest-cov (2.9.0)
nox (2020.5.24)
Config
Please ask me in a comment if you need anything in particular.
Code
Currently from a private repository
Summary
Running the same tests with nox against Python 3.6, 3.7 and 3.8 shows wrong report being generated for Python 3.8. This seems to be caused by the fact that the number of reported lines for some sources is wrong.
Expected vs actual result
The report generated with Python 3.6 seems fine:
This is what the same tests produce with Python 3.8
Note how some sources in the 3.8 case are reported to be ridiculously larger than in the 3.6 case.
Reproducer
It seems to happen with every test run.
Versions
pytest (5.4.2)
pytest-cov (2.9.0)
nox (2020.5.24)
Config
Please ask me in a comment if you need anything in particular.
Code
Currently from a private repository