nose.py 文件源码

def pytest_runtest_setup(item):
    if is_potential_nosetest(item):
        if isinstance(item.parent, pytest.Generator):
            gen = item.parent
            if not hasattr(gen, '_nosegensetup'):
                call_optional(gen.obj, 'setup')
                if isinstance(gen.parent, pytest.Instance):
                    call_optional(gen.parent.obj, 'setup')
                gen._nosegensetup = True
        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)