fixture with scope “class” running for every method

[grnmeira]

I'm having a problem with fixture scopes and I wonder if this can be a bug. I'm running Pytest 3.2.5 with Python 3. I basically want to apply a fixture with scope "class" but parametrizing the fixture. The idea is to have groups of tests defined by classes, and to run those groups with different configurations. But when I apply also a fixture with scope "function", that seems to affect also the "class" fixture.

I have a question with an example code in Stack Overflow: https://stackoverflow.com/questions/47312835/pytest-fixture-with-scope-class-running-on-every-method

[grnmeira]

After a bit more of research, I guess this may be a duplicated of issue #570.

[nicoddemus]

Indeed seems like a duplicate, but let's keep this open because your example code might be useful.

I think that I run into similar issue while trying to figure out how the scopes work.
I'm not sure if this is the case, as I'm learning python and pytest and the error may be on my side, but:

in my conftest.py

@pytest.fixture(scope="session")
def session_node_fixture(request):
    print("\n", request.node, " session fixture")

@pytest.fixture(scope="class")
def class_node_fixture(request):
    print(request.node, " class fixture")

@pytest.fixture(scope="function")
def function_node_fixture(request):
    print(request.node, " function fixture")

@pytest.fixture(scope="module")
def module_node_fixture(request):
    print("\n", request.node, " module fixture")

in my pytest.ini
[pytest] usefixtures = class_node_fixture module_node_fixture session_node_fixture function_node_fixture

and in my test module 'test_module_b.py'

def test_testmodule_a():
    print("test testmodule_a")


def test_testmodule_b():
    print("test testmodule_b")

And the output of 'pytest -s' for that is:

collected 2 items                                                              

tests\fixture_tests\test_module_b.py
 <Session 'asta_automation_framework'>  session fixture

 <Module 'tests/fixture_tests/test_module_b.py'>  module fixture
<Function 'test_testmodule_a'>  class fixture
<Function 'test_testmodule_a'>  function fixture
test testmodule_a
.<Function 'test_testmodule_b'>  class fixture
<Function 'test_testmodule_b'>  function fixture
test testmodule_b
.

========================== 2 passed in 0.05 seconds ===========================

session and module fixtures are run as expected but I think that class fixtures shouldn't be run here.

[seppestas]

If this is a duplicate of #570, was this also fixed in #5798?

[rafaelcs]

Using pytest version 5.4.3 I have exactly the same issue. Do we have any update?

[bluetech]

I cannot reproduce the original issue from the stack overflow post, so closing.

@fkudron-home please open a new issue if you still have this problem, however I think this is intended behavior (not sure).

@rafaelcs Please open a new issue with a way to reproduce the problem you're seeing.