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Current File : //lib/python3/dist-packages/_pytest/nose.py

"""Run testsuites written for nose."""
from _pytest import python
from _pytest import unittest
from _pytest.config import hookimpl
from _pytest.nodes import Item


@hookimpl(trylast=True)
def pytest_runtest_setup(item):
    if is_potential_nosetest(item):
        if not call_optional(item.obj, "setup"):
            # Call module level setup if there is no object level one.
            call_optional(item.parent.obj, "setup")
        # XXX This implies we only call teardown when setup worked.
        item.session._setupstate.addfinalizer((lambda: teardown_nose(item)), item)


def teardown_nose(item):
    if is_potential_nosetest(item):
        if not call_optional(item.obj, "teardown"):
            call_optional(item.parent.obj, "teardown")


def is_potential_nosetest(item: Item) -> bool:
    # Extra check needed since we do not do nose style setup/teardown
    # on direct unittest style classes.
    return isinstance(item, python.Function) and not isinstance(
        item, unittest.TestCaseFunction
    )


def call_optional(obj, name):
    method = getattr(obj, name, None)
    isfixture = hasattr(method, "_pytestfixturefunction")
    if method is not None and not isfixture and callable(method):
        # If there's any problems allow the exception to raise rather than
        # silently ignoring them.
        method()
        return True

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