8000 Appveyor tests aren't using Python 3 · Issue #213 · gcovr/gcovr · GitHub
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latk opened this issue Feb 13, 2018 · 2 comments
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Appveyor tests aren't using Python 3 #213

latk opened this issue Feb 13, 2018 · 2 comments
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Platform: Windows Type: Bug

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@latk
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latk commented Feb 13, 2018

I am currently working on modularization. But the tests fail on Windows! It seems when the test Makefiles invoke the gcovr script, it is using this sys.path for our Python 3 tests:

./subdir/B/testcase
../../../scripts/gcovr -r subdir -d -x -o coverage.xml
Could not find gcovr modules in:
C:\projects\gcovr\scripts
C:\windows\SYSTEM32\python27.zip
C:\Python27\DLLs
C:\Python27\lib
C:\Python27\lib\plat-win
C:\Python27\lib\lib-tk
C:\Python27
C:\Python27\lib\site-packages
Traceback (most recent call last):
  File "../../../scripts/gcovr", line 44, in <module>
    from gcovr.app import parse_arguments
ImportError: No module named gcovr.app
make: *** [Makefile:16: xml] Error 1

So gcovr was installed using Python 3, but we try to run it under Python 2 :/

And indeed, the appveyor.yml selects the Python version through an env variable:

environment:
  matrix:
    - PYTHON: C:\Python27\python.exe
    - PYTHON: C:\Python36-x64\python.exe

In the Makefile, the script is invoked like this, without using that env variable:

../../../scripts/gcovr -d -x -o coverage.xml

I assume the tests should be updated to explicitly run the selected Python, e.g.

PYTHON ?= python

xml:
	$(PYTHON) ../../../scripts/gcovr -d -x -o coverage.xml

My questions:

  • does this analysis seem sensible?
  • can someone with a Windows machine verify?
  • would someone like to contribute a fix?
@mayeut
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mayeut commented Feb 13, 2018

I wanted to get some coverage information for gcovr itself and for that, starting moving things around a bit. I just ran into an issue with python 3.6 on Windows which has no reason to be a result of my work and is probably a pre-existing issue, thus confirming your analysis.
I think before modularization is done, it might be a good thing to know what's the current gcovr status (and therefore, what's likely to break without anyone knowing).
I will open a PR for this work which will most probably open some discussions (and which might give you ideas on the issue you're seeing).

@mayeut mayeut mentioned this issue Feb 14, 2018
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@latk
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latk commented Feb 14, 2018

Seems to be fixed by #214. Thank you @mayeut !

@latk latk closed this as completed Feb 14, 2018
@latk latk removed the help wanted label Feb 14, 2018
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