Coverage pyqr

[chazuttu]

Summary

This PR adds unit tests for the script pyqr.py and also increases its coverage.

• added unit tests for pyqr.py
• updated .coveragerc file
• updated requirements-dev.txt file
• added sample QR image for testing
• increased code coverage upto 86% for pyqr.py

Checklist

• Classes, Variables, function and methods logic ok
• Comments written explaining what the code does
• All python code is PEP8 compliant (run black .)
• No lint issues (run flake8)
• Test coverage with pytest implemented
• Reviewers assigned (at least 1 mentor)

Manual test evidence

Python 3

pytest --cov-config=.coveragerc --cov=pyafipws tests/test_pyqr.py

================= test session starts ========================
platform win32 -- Python 3.9.6, pytest-6.2.3, py-1.10.0, pluggy-0.13.1
rootdir: C:\Users\pyafipws, configfile: pytest.ini
plugins: cov-2.12.1, freezegun-0.4.2, html-3.1.1, metadata-1.11.0, mock-3.6.1, vcr-1.0.2
collected 6 items

tests\test_pyqr.py .....X                                                                                                                                                                                        [100%]


----------- coverage: platform win32, python 3.9.6-final-0 -----------
Name                                                                                       Stmts   Miss  Cover
--------------------------------------------------------------------------------------------------------------
test3\Lib\site-packages\PyAfipWs-3.9.b_2583_-py3.9.egg\pyafipws\__init__.py                    4      0   100%
test3\Lib\site-packages\PyAfipWs-3.9.b_2583_-py3.9.egg\pyafipws\pyqr.py                      104     15    86%
--------------------------------------------------------------------------------------------------------------

===================== 5 passed, 1 xpassed, 2 warnings in 4.24s ===============

Python 2

pytest --cov-config=.coveragerc --cov=pyafipws tests/test_pyqr.py

============================= test session starts =============================
platform win32 -- Python 2.7.18, pytest-4.6.11, py-1.10.0, pluggy-0.13.1
rootdir: C:\Users\pyafipws, inifile: pytest.ini
plugins: cov-2.12.1, freezegun-0.4.2, html-1.22.1, metadata-1.11.0, mock-2.0.0, vcr-1.0.2
collected 6 items

tests\test_pyqr.py .....x                                                [100%]

---------- coverage: platform win32, python 2.7.18-final-0 -----------
Name                                                                                    Stmts   Miss  Cover
-----------------------------------------------------------------------------------------------------------
test2\Lib\site-packages\PyAfipWs-2.7.2583-py2.7.egg\pyafipws\__init__.py                    4      0   100%
test2\Lib\site-packages\PyAfipWs-2.7.2583-py2.7.egg\pyafipws\pyqr.py                      104     15    86%
-----------------------------------------------------------------------------------------------------------


===================== 5 passed, 1 xfailed in 3.87 seconds =====================