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Selenium/How-to/Run tests targeting MediaWiki-Vagrant

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For this example, we will not enable any roles and we will use MediaWiki Core.


Advantages

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Running Selenium tests targeting MediaWiki-Vagrant machine has several advantages:

  • It will be fast, since the target machine is local. MediaWiki Core Selenium test run takes about 2 minutes on my machine. (As of September 2019.)
  • After everything is set up, you do not need internet connection.
  • Debugging failed tests will be easier, since you are able to see the browser. See Selenium/How-to/Make the browser visible.
  • You are probably already familiar with MediaWiki-Vagrant and have it installed.

Disadvantages

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  • You might not be familiar with MediaWiki-Vagrant, so you will have to learn how to install and use yet another tool.
  • You will have to install Vagrant, MediaWiki-Vagrant and their dependencies on your machine.
  • You will be executing over 900 JavaScript packages (as of August 2019) directly on your machine with access to all personal/work files.

Set up MediaWiki-Vagrant

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Boot the machine

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vagrant up

Go to mediawiki folder

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cd mediawiki

Install dependencies

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Depending on your operating system, installing dependencies will be different.

Browser

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Node.js

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Warning Warning: Running npm ci is not safe. See How to protect yourself from npm.
npm ci

Environment variables

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Ensure the following environment variables are set. Either run this manually from the terminal or, to make it easier for next time, set them from shell configuration file (~/.bash_profile, ~/.zshrc...) which means the variables are always available from any terminal session: 

# Target MediaWiki-Vagrant
export MW_SERVER=http://localhost:8080
export MW_SCRIPT_PATH=/w
export MEDIAWIKI_USER=Admin
export MEDIAWIKI_PASSWORD=vagrant

If you prefer, you can create an .env file instead (in MediaWiki Core folder), with this contents. 

# Target MediaWiki-Vagrant
MW_SERVER=http://localhost:8080
MW_SCRIPT_PATH=/w
MEDIAWIKI_USER=Admin
MEDIAWIKI_PASSWORD=vagrant

Run Selenium tests

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npm run selenium-test

suspend or halt the machine

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vagrant suspend

or 

vagrant halt
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