When communicating with pytest beginners, it’s common to encounter code like this:

@pytest.fixture()
def test_login():
    driver = get_driver()
    page = pom.LoginPage(driver)
    page.login()
    return driver

def test_create_data(test_login):
    page = pom.HomePage(test_login)
    msg = page.send_data("./data.csv")
    assert 'ok' in msg

While the code meets functional requirements:

1. executes login first, then executes create_data.
2. Uses the same browser instance for all steps.

It also confuses them: Why are there 2 test cases, but only 1 appears in the terminal and reports?

This confusion arises because in most tutorials, blogs, and examples, test cases and fixtures share similarities:

• Both are functions.
• Both can use decorators.
• Both can return values ( pytest <=8.3.3).
• Both can use fixtures.

Currently, using @pytest.mark in fixtures raises a warning.
Should we also issue a warning when @pytest.fixture is used for test cases?

This could make it clearer that test cases and fixtures are fundamentally different, and their decorators are not interchangeable.