Quibble: a test runner for MediaWiki

Quibble gets MediaWiki, install it and run all MediaWiki tests suites. All is included in a single command.

As a requirement one needs python 3 and all software required by MediaWiki and its tests systems:

  • Chromium
  • composer
  • NodeJS
  • npm
  • php
  • python 3
  • Xvfb


docker build --tag quibble .
docker run -it --rm quibble

Which runs tests with php7.0, MariaDB and using mediawiki/vendor.git to provide PHP libraries.

You could instead run tests with dependencies provided by composer install and use SQLite as a database backend:

docker run -it quibble  --packages-source composer --db sqlite

Wikimedia maintains a Docker container intended to be used for its continuous integration system:

docker pull docker-registry.wikimedia.org/releng/quibble-stretch:latest

The source is on Gerrit https://gerrit.wikimedia.org/g/integration/config under the dockerfiles directory. Other containers with slight variation such as providing Zend PHP5.5 or HHVM.

Further documentation can be found on https://doc.wikimedia.org/quibble/ .


Docker container

Get the latest image being run by Wikimedia CI:

docker pull docker-registry.wikimedia.org/releng/quibble-stretch:latest

Quibble clones the repositories from Gerrit and then run composer and npm. At the end of the run, the container would be dismissed as well as all the downloaded content. To make it faster, you should set local copies of the git repositories that would be downloaded from and set up a cache directory on the host to be mounted in the container.

To avoid cloning MediaWiki over the network, you should initialize local bare git repositories to be used as a reference for git to copy them from:

mkdir -p ref/mediawiki/skins
git clone --bare https://gerrit.wikimedia.org/r/mediawiki/core ref/mediawiki/core.git
git clone --bare https://gerrit.wikimedia.org/r/mediawiki/vendor ref/mediawiki/vendor.git
git clone --bare https://gerrit.wikimedia.org/r/mediawiki/skins/Vector ref/mediawiki/skins/Vector.git

The Docker containers have XDG_CACHE_HOME=/cache set which is recognized by package managers. Create a cache directory writable by any user:

mkdir cache
chmod 777 cache

Commands write logs into /workspace/log, you can create one on the host and mount it in the container:

mkdir -p log
chmod 777 log

You might also want to reuse the installed sources between runs. The container has the source repository under /workspace/src:

mkdir -p src
chmod 777 src

The directory tree on the host will looks like:

├── cache/
├── log/
├── src/
└── ref/
    └── mediawiki/
        ├── core.git/
        ├── skins/
        │   └── Vector.git/
        └── vendor.git/

When running the Docker container, mount the directories from the host:

Host dir Container dir Docker run argument
./cache/ /cache -v "$(pwd)"/cache:/cache
./log/ /workspace/log -v "$(pwd)"/log:/workspace/log
./ref/ /srv/git -v "$(pwd)"/ref:/srv/git:ro
./src/ /workspace/src -v "$(pwd)"/src:/workspace/src

The final command:

docker run -it --rm \
  -v "$(pwd)"/cache:/cache \
  -v "$(pwd)"/log:/workspace/log \
  -v "$(pwd)"/ref:/srv/git:ro \
  -v "$(pwd)"/src:/workspace/src \

Quibble will then do the initial cloning of repositories reusing bare repositories from ref, being local it is arguably faster than transferring everything from Gerrit. The composer install and npm install will save the downloaded packages to cache which speed up the next run.

Finally, having /src mounted from the host, lets one reuse the installed wiki. One can later skip cloning/checking out the repositories by passing --skip-zuul and skip installing composer and npm dependencies with --skip-deps. For other options see: Quibble CLI usage.


Coverage report:

tox -e cover && open cover/index.html


Files under zuul comes from Zuul “A Project Gating System”:

Copyright 2012 Hewlett-Packard Development Company, L.P. Copyright 2013-2014 OpenStack Foundation Copyright 2013-2018 Antoine Musso Copyright 2014-2018 Wikimedia Foundation Inc. Copyright 2015 Rackspace Australia

quibble/gitchangedinhead.py comes from Wikimedia CI scripts:

Copyright 2013, 2018, Antoine Musso Copyright 2017, Kunal Mehta Copyright 2017, 2018, Wikimedia Foundation Inc.

Other files are:

Copyright 2017-2018, Antoine Musso Copyright 2017, Tyler Cipriani

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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