如何将额外的参数传递给我的py.test设置方法？

Question

I need to setup tests depending on where or how I want to run py.test tests. I want to be able to do something like this

py.test --do_this

py.test --do_that

and retrieve the values in the setup method of a test class

class TestSuite(object):
    def setup(self):
        if (do_this): 
            ...

Something like that. Can this be done? And if so, how?

Answer 1

From the documentation, you can add arguments to the pytest caller

# content of test_sample.py
def test_answer(do):
    if do == "this":
        print ("do this option")
    elif do == "that":
        print ("do that option")
    assert 0 # to see what was printed

# content of conftest.py
import pytest

def pytest_addoption(parser):
    parser.addoption("--do", action="store", default="that",
        help="my option: this or that")

@pytest.fixture
def do(request):
    return request.config.getoption("--do")

Then, you can call pytest as pytest -q test_sample.py to get the default case with that and pytest -q --do=this for the other case