Mine

import unittest
import doctest

from zope.testing import doctestunit
from zope.component import testing, eventtesting

from Testing import ZopeTestCase as ztc

from Products.Zwierzeta_folder.tests import base

def test_suite():
    return unittest.TestSuite([

        # Demonstrate the main content types
        doctest.DocFileSuite(
            'README.txt', package='Products.Zwierzeta_folder',
            optionflags=doctest.REPORT_ONLY_FIRST_FAILURE |
                doctest.NORMALIZE_WHITESPACE | doctest.ELLIPSIS),

        ])