Option to omit empty files (e.g. __init__.py)

[nedbat]

Originally reported by Daniel Hahler (Bitbucket: blueyed, GitHub: blueyed)

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It would be nice if empty files (especially __init__.py) could be ignored, e.g. via an option omit-empty.

Ref: #1/empty-__init__py-files-are-reported-as-1

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• Bitbucket: https://bitbucket.org/ned/coveragepy/issue/315

[nedbat]

Original comment by Alexander Walters (Bitbucket: sdamon, GitHub: sdamon)

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The referenced issue is resolved, and I have not seen empty files as being reported. Coverage covers lines, if there are no lines, then there is nothing to hit or miss with. I think you have stumbled onto either a new bug or found some smell in your own code.

[nedbat]

@sdamon Issue #1 was about empty files claiming to have one statement, the fix made them have zero statements, but they are still reported. I suspect @blueyed is using the --source option, which makes completely unexecuted files appear in reports. I like the idea of skipping empty files if they are pulled in via the --source switch.

[nedbat]

Changeset b7762d1a6614 (bb) introduces the report --skip-covered option, which will skip any file with 100% coverage. Since empty __init__.py files are 100% covered, does this satisfy your use case?