python - Parametrize set of tests using PyTest -

python - Parametrize set of tests using PyTest -

i have next problem, need execute bunch of tests using pytest each test same, difference parameter.

for instance have execute:

./command_line arg1 ./command_line arg2 ... ./command_line argn

and need verify executable command returns expected given result.

i aware of this, inquire piece of advice best approach problem.

i give thanks in advance!

edit: found question in stackoverflow adviced take this page found useful in case.

i using pytest.mark.parametrize , works this:

import pytest @pytest.mark.parametrize('arg, result', [ ('arg1', 'result1'), ('arg2', 'result2'), ('arg3', 'result3'), ('argn', 'resultn'), ]) def test_cmd0(arg, result): out = subprocess.check_output(['cmd', arg]) assert out.rstrip() == out

where arg1, .. argn - arguments, , result1, .., resultn expected results.

in illustration above, showed how launch external command , expect different result on every run. if expected result same, can skip result in parametrization , do:

assert out.rstrip() == 'expected result'

python unit-testing testing py.test