How to specify `use_cassette`

When there are many tests using the same request/response, what’s the best way to ensure they all use the same cassette? The vcr.use_cassette API clearly provides an option to name a cassette file. Is this exposed in pytest-vcr? e.g.

@pytest.mark.vcr(vcr_cassette_name='custom')

# or?

@pytest.mark.vcr(use_cassette='cassettes/custom.yaml')

Is this already noted in the read-the-docs? Where is it explained?

It seems like adding a decorator for VCR to a pytest-fixture does not work, or does it? If so, how?

[ktosiek]

Currently passing the cassette name into the marker is not supported.

If the tests are grouped somehow (say, by class) you could override vcr_cassette_name for that scope:

@pytest.mark.vcr
class CommonCassetteTests:
    @pytest.fixture
    def vcr_cassette_name(self):
        return 'custom'

    def test_one(self):
        ...

    def test_two(self):
        ...

Otherwise you can use the vcr fixture to get a current VCR object:

# Note: don't mix the marker with explicit usage of "vcr"
def test_common1(vcr):
    with vcr.use_cassette('common'):
        ...

def test_common2(vcr):
    with vcr.use_cassette('common'):
        ...

I’m not sure what you mean by adding a decorator for VCR - could you rephrase, or provide an example of what you’ve tried?

[dazza-codes]

Might be fixed by #25