How to load diff .env file for diff env at runtime

[pawan-qa]

I want to load, say qa.env file for qa env and dev.env file for dev env. How do I tell pytest to parse env name from cli arg and load specific .env file ?

How do I dynamically pass env value to find_dotenv method- load_dotenv(find_dotenv(f'{env}.env'))

My cli arg looks like pytest -sv <test-folder-path> --env qa

conftest.py

@pytest.fixture(scope='session',autouse=True)
def env(request):
return request.config.getoption('--env')

def pytest_addoption(parser):
parser.addoption("--env", action="store",default='qa',choices=("qa", "dev"))

I also tried with this fixture in conftest.py file -

@pytest.fixture(scope='session',autouse=True)
def get_env(env):
load_dotenv(find_dotenv(f'{env}.env'))

I am open to any solution which loads specific .env file dynamically.

[RonnyPfannschmidt]

Pytest itself is unaware of dotenv files

No built-in support planned

[nicoddemus]

@pawan-qa the code you shown should be working, do you get any errors? Make sure get_env is being called correctly, one way to do it is calling breakpoint() at the start, and checking the value of the env parameter.

[pawan-qa]

@nicoddemus I tried with breakpoint as you have suggested but this get_env fixture does not get executed at all. Execution doesn't break at breakpoint. Pls help me with any alternate solution to load .env file dynamically.

Is there a way to fetch cli arg in pytest_sessionstart hook ?

[nicoddemus]

Is the fixture using autouse=True?

[pawan-qa]

@nicoddemus Yes, autouse = True