Discussion on using custom parameters in pytest.main()

[Fish-watching-the-sea]

I have a runtime parameter --use_https defined using pytest hooks. It is defined as follows:

./tests/conftest.py:

def pytest_addoption(parser):
    parser.addoption("--use_https", action="store", dest="use_https", default="0", help="use_https: use HTTPS?")

I can run tests using the following two methods in CMD.

• pytest --use_https 0
• pytest --use_https=0

But in pytest.main() I can only run the test using pytest.main(['--use_https=0']). When using pytest.main(['--use_https 0']) to run the test, an error will be reported:

ERROR: file or directory not found: --use_https 0

In daily use, I found that you can use spaces to separate the flag and value in pytest.main(). For example I can use pytest.main(["-m blocker"]) to run all test cases marked with @pytest.mark.blocker decorator.

[RonnyPfannschmidt]

This is expected behavior

The form without the equal sign must use 2 strings, one for the options name and one for the value

What you did is the equivalent of pytest "--my-option 0"

Use pytest.main(['--use_https', '0'])