Regression: "Already imported a file that will be measured", loss of coverage · Issue #909 · nedbat/coveragepy (original) (raw)

Describe the bug

I'm measuring gtimelog's test coverage with coverage run -m gtimelog.tests. Since coverage 5.0a4 this is missing some coverage (shows 79% instead of 100%) and also produces warnings:

Coverage.py warning: Already imported a file that will be measured: /home/mg/src/gtimelog/src/gtimelog/__init__.py (already-imported)
Coverage.py warning: Already imported a file that will be measured: /home/mg/src/gtimelog/src/gtimelog/timelog.py (already-imported)
Coverage.py warning: Already imported a file that will be measured: /home/mg/src/gtimelog/src/gtimelog/settings.py (already-imported)

To Reproduce
How can we reproduce the problem? Please be specific.

  1. What version of Python are you using? 2.7.17 and 3.7.5
  2. What version of coverage.py are you using? 5.0.1 (but every version starting with 5.0a4 is affected; 5.0a3 is fine)
  3. What versions of what packages do you have installed?
coverage==5.0.1  
coverage-python-version==0.2.0  
freezegun==0.3.12  
-e git+https://github.com/gtimelog/gtimelog@5f7858cc58925e42b2d7cbc1d872b11745c38872#egg=gtimelog  
mock==3.0.5  
python-dateutil==2.8.1  
six==1.13.0  
</details>
  1. What code are you running? Give us a specific commit of a specific repo that we can check out.
    https://github.com/gtimelog/gtimelog/tree/5f7858cc58925e42b2d7cbc1d872b11745c38872
  2. What commands did you run? make coverage for a quick version; .tox/coverage/bin/pip install coverage=$version && .tox/coverage/bin/coverage -m gtimelog.test && .tox/coverage/bin/coverage report to test a specific version of coverage.py

Expected behavior
100% coverage reported, no warnings.