CODEWITHSUNDEEP
pythontestingpytest
frans
frans

Reputation: 9748

in pytest how can I use command line arguments to modify test parameters?

I want to add a command line parameter to my tests which have effect on (but not only on) test parameters. So I've added an option to my conftest.py:

def pytest_addoption(parser):
    parser.addoption("--target-name", action="store")

I know how to make fixtures depend on command line values but not how to do this for test parameters

@pytest.mark.parametrize(
    "target_specific_data", json.parse(open("target-%s.json" % target_name)))
def test_foo(target_specific_data):
      ...
      ...

How can I do this with pytest?

Upvotes: 1

Views: 628

Answers (1)

Chanda Korat
Chanda Korat

Reputation: 2561

Pytest considers value of parameters as list of values. You can make one function which would return your data and assign to them in list at run time or make the function return the list it self as below.

conftest.py

import os

def pytest_addoption(parser):
    parser.addoption("--target-name", action="store")

def pytest_configure(config):
    if config.getoption('target-name'):
        os.environ["target-name"] = config.getoption('target-name')

test file

import json
import pytest
import os

def get_test_param():
    return json.parse(open("target-{}.json".format(os.getenv('target-name')))

@pytest.mark.parametrize('target_specific_data', [get_test_param()]))
def test_foo(target_specific_data):
    pass

Hope it would help !!

Upvotes: 1

Related Questions