Change 138209 had a related patch set uploaded by Gerrit Patch Uploader:
fix pep8 error in the categoryFormat() and add check for mwparserfromhell usage on windows, and set parser.use_c = False if you can load mwpfh on windows. See bug 66330

https://gerrit.wikimedia.org/r/138209

Change 138210 had a related patch set uploaded by Gerrit Patch Uploader:
fix pep8 error in the categoryFormat() and add check for mwparserfromhell usage on windows, and set parser.use_c = False if you can load mwpfh on windows. See bug 66330

https://gerrit.wikimedia.org/r/138210

Change 138211 had a related patch set uploaded by Gerrit Patch Uploader:
fix pep8 error in the categoryFormat() and add check for mwparserfromhell usage on windows, and set parser.use_c = False if you can load mwpfh on windows. See bug 66330

https://gerrit.wikimedia.org/r/138211

Change 138211 abandoned by John Vandenberg:
fix pep8 error in the categoryFormat() and add check for mwparserfromhell usage on windows, and set parser.use_c = False if you can load mwpfh on windows. See bug 66330

Reason:
Dup of Id1bafc078f924a4cc52bfe165b9639af9d4145d

https://gerrit.wikimedia.org/r/138211

Do all test case in tests/page_tests.py fail? Can you attach a log of the unit test?

In the gerrit code review https://gerrit.wikimedia.org/r/#/c/138209/, it was explained that the issue upstream was closed without resolution:
https://github.com/earwig/mwparserfromhell/issues/54

C:\rewrite>pwb.py tests\page_tests.py --v
testHashCmp (main__.TestLinkObject) ... ok
testNamespaces (main.TestLinkObject)
Test that Link() normalizes namespace names ... ok
testTitles (main.TestLinkObject)
Test that Link() normalizes titles ... ok
testApiMethods (main__.TestPageObject)
Test various methods that rely on API. ...

is all I get

I am running on windows environment without mwpfh installed. It's result is:

c:\Pywikipedia\ssh\pywikibot\core>pwb.py tests/page_tests -v
testHashCmp (main__.TestLinkObject) ... ok
testNamespaces (main.TestLinkObject)
Test that Link() normalizes namespace names ... ok
testTitles (main.TestLinkObject)
Test that Link() normalizes titles ... ok
testApiMethods (main.TestPageObject)
Test various methods that rely on API. ... ok
testGeneral (main.TestPageObject) ... ok
testIsCategory (main.TestPageObject)
Test isCategory method. ... ok
testIsDisambig (main.TestPageObject) ... ok
testIsImage (main.TestPageObject) ... ok
testIsRedirect (main.TestPageObject) ... ok
testIsTalkPage (main.TestPageObject)
Test isTalkPage() method. ... ok
testLinks (main.TestPageObject) ... ok
testNamespace (main.TestPageObject)
Test namespace() method ... ok
testPageGet (main.TestPageObject) ... ok
testReferences (main.TestPageObject) ... ok
testSection (main.TestPageObject)
Test section() method. ... ok
testSite (main.TestPageObject)
Test site() method ... ok
testTitle (main__.TestPageObject)
Test title() method options. ... ok

Ran 17 tests in 2.806s

OK

c:\Pywikipedia\ssh\pywikibot\core>

After cleaning the api-cache I got the same exept it needs some more time:

Ran 17 tests in 32.706s

OK

I have installed mwparserfromhell using pip, resulting in 0.3.3, and mwparserfromhell.parser.use_c being True by default.

When I run textlib_tests and page_tests, they run correctly on a 32bit system.

I suspect that there was a problem with the mwparserfromhell build, either upstream or a local build issue.

Recommend reinstalling again via pip, to be sure.

If the problem still exists, run the tests with full debug/verbose logging as shown in https://gerrit.wikimedia.org/r/#/c/146046/ , then remove the password from the log and upload it as an attachment to bugzilla, re-open the bug, and specify whether you have 64bit or 32bit machine.

Change 138210 abandoned by John Vandenberg:
fix pep8 error in the categoryFormat() and add check for mwparserfromhell usage on windows, and set parser.use_c = False if you can load mwpfh on windows. See bug 66330

Reason:
Cant reproduce the problem, and if there is still a problem it needs to be fixed in mwparserfromhell.

https://gerrit.wikimedia.org/r/138210