```lang=python
======================================================================
FAIL: test_onlyif (__main__.TestFactoryGeneratorWikibase)
Test -onlyif without qualifiers.
----------------------------------------------------------------------
Traceback (most recent call last):
File "E:/docs/programming/python/wiki/pywikibot-core/tests/pagegenerators_tests.py", line 1192, in test_onlyif
self.assertEqual(len(set(gen)), 1)
AssertionError: 0 != 1
======================================================================
FAIL: test_onlyif_qualifiers (__main__.TestFactoryGeneratorWikibase)
Test -onlyif with qualifiers.
----------------------------------------------------------------------
Traceback (most recent call last):
File "E:/docs/programming/python/wiki/pywikibot-core/tests/pagegenerators_tests.py", line 1211, in test_onlyif_qualifiers
self.assertEqual(len(set(gen)), 1)
AssertionError: 0 != 1
======================================================================
FAIL: test_onlyifnot (__main__.TestFactoryGeneratorWikibase)
Test -onlyifnot without qualifiers.
----------------------------------------------------------------------
Traceback (most recent call last):
File "E:/docs/programming/python/wiki/pywikibot-core/tests/pagegenerators_tests.py", line 1202, in test_onlyifnot
self.assertEqual(len(set(gen)), 0)
AssertionError: 1 != 0
```
https://travis-ci.org/wikimedia/pywikibot-core/jobs/272455787#L4396