[setup.py] Added an option for providing additional arguments to pytest

[vivekrnv]

Signed-off-by: Vivek Reddy Karri [email protected]

Currently, the only option to run unit tests is to use this command, pytest setup.py test. This executes all the unit tests even though user only wants to run a few and also no control over pytest arguments

What I did

Added an argument '-a' to the python3 setup.py test command which takes in pytest related arguments.

Essentially, python3 setup.py test -a "<args>" translates to pytest <args>

How I did it

Pulled the code from the pytest-setuptools integration documentation which is deprecated now
Link

Rationale for change made in scripts/route_check.py:

Although this was meant to be used as a script, the main method in this module is invoked by the tests/route_check_test.py and hence the arguments passed to route_check_test are inturn passed to the route_check() script and hence an error is thrown when parse_arguments() is used.
Therefore parse_arguments is replaced with parse_known_arguments()

How to verify it

python3 setup.py test -a "-k 'Test_Aaa'" # To only run the tests under Test_Aaa class

============================================================================================ test session starts =============================================================================================
platform linux -- Python 3.7.3, pytest-3.10.1, py-1.7.0, pluggy-0.8.0 -- /usr/bin/python3
cachedir: .pytest_cache
rootdir: /sonic/src/sonic-utilities, inifile: pytest.ini
plugins: pyfakefs-4.4.0, cov-2.6.0
collected 1009 items / 1005 deselected

tests/aaa_test.py::TestAaa::test_show_aaa_default PASSED                                                                                                                                               [ 25%]
tests/aaa_test.py::TestAaa::test_config_aaa_radius PASSED                                                                                                                                              [ 50%]
tests/aaa_test.py::TestAaa::test_config_aaa_radius_local PASSED                                                                                                                                        [ 75%]
tests/aaa_test.py::TestAaa::test_config_aaa_radius_invalid PASSED                                                                                                                                      [100%]

Others:
python3 setup.py test -a "-x'" # To stop at the first failure
python3 setup.py test -a "-x -k 'Test_Aaa'" # Multiple arguments can be given as well

This did not break any functionality

vkarri@r-build-sonic06:/builds2/vkarri/sonic/sonic-buildimage$ make NOJESSIE=1 NOSTRETCH=1 target/python-wheels/sonic_utilities-1.2-py3-none-any.whl
.. (Exisiting Tests did pass and package build was successful as well)
-- Docs: https://docs.pytest.org/en/latest/warnings.html
================== 1029 passed, 1 warnings in 174.55 seconds ===================

Previous command output (if the output of a command-line utility has changed)

New command output (if the output of a command-line utility has changed)

[liat-grozovik]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[lguohan]

to run pytest, can we invoke pytest directly instead of python3 setup.py test? it seems your requirement is just to run pytest for a particular test. I am not sure using python3 setup.py test is the right way to do it.