initing a pytest fixture with a parameter

问题

I have a fixture that creates an object I use in many tests.
This Object has a property - priority (1 - 10)

Now, there are a lot of tests that need to "know" the priority of the object (in order to test various logic paths)

So I could have 10 different fixtures:

@pytest.fixture
def object_priority_1():
    return MyObj(priority=1)
@pytest.fixture
def object_priority_2():
    return MyObj(priority=2)
//....
@pytest.fixture
def object_priority_10():
    return MyObj(priority=10)

But it seems off... I'm sure there is a way to deliver an external param to a fixture each time - I just couldn't find it

Edit: To clarify - I would have wanted something in the area of:

@pytest.fixture
    def my_object(<priority as an external param>):
        return MyObj(priority)

And then the test would be something like:

def test_foo(my_object(1), my_object(6)):
//...

回答1:

You can do :

@pytest.fixture
def my_object(priority):
    return MyObj(priority)    

def test_foo(my_object):
    obj_1 = my_object(1)
    assert something # 1
    obj_2 = my_object(2)
    assert something # 2

I come with this idea, then I found this Q&A :

py.test: Pass a parameter to a fixture function

I think your question maybe consider a duplicate if your problem is solved.

来源：https://stackoverflow.com/questions/32275347/initing-a-pytest-fixture-with-a-parameter