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• The Magnolia webapp runs on the host as usual
• with manual-tests profile
• e.g.  mvn clean verify -P jetty9-standalone,manual-tests
• free hint #1: run this build from another location on your machine than the one you typically work at
• free hint #2: run it in offline mode (mvn -o ...) if you just installed one of the modules you want to put under test 

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1. Setup your VM and install Ubuntu for example
   1. mount iso image in optical drive
2. In VirtualBox preferences File > Network > Host-only NetworksHost Network Manager..., click the add icon
   
   • creates a new virtual network interface e.g. vboxnet0 
   • (used to be Preferences > Network in former vbox versions, as illustrated below)
      
3. In VM Settings > Network
   • 1st slot: select "Host-only Adapter", then choose the one you just created — that vboxnet0
   • 2nd slot: select NAT as is usually the default (to access the interwebs through the host)
4. Install guest additions
• When VirtualBox VM is running
• Devices > Insert Guest Additions CD image...

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1. In the VM, download Selenium Server (formerly the Selenium RC Server)
   
   • http://docs.seleniumhq.org/download/
     • in case of problems with the only linked version (i.e. 3.0.0-beta3), links to older packages can be found here: http://selenium-release.storage.googleapis.com/, e.g. http://selenium-release.storage.googleapis.com/2.52/selenium-server-standalone-2.52.jar
   • should be  something like selenium-server-standalone-2.42.2.jar
   • and then run it, e.g. java -jar selenium-server-standalone-2.42.2.jar
     • For Selenium 3+, you'll need to get Geckodriver first and provide it's location to Selenium through the webdriver.gecko.driver (Java) system property.
       To do so, either
       • run it as java -jar -Dwebdriver.gecko.driver=/path/to/geckodriver selenium-server-standalone-3.3.1.jar
       • or once set it globally in /etc/environment, e.g. through echo "_JAVA_OPTIONS='-Dwebdriver.gecko.driver=/path/to/geckodriver" | sudo tee -a /etc/environment, then log out and back in for the changes to take effect

2. On your host run the UI Tests with the variables seleniumServerHostName which is the address of your newly created VM and containerHostName which is the address used of your VM to access your host system (this is probably not equal to your machines address in the magnolia network)
   

   Code Block
   language bash
   $ mvn -U clean install -Pjetty9-standalone,ui-tests -DseleniumServerHostName=192.168.56.101 -DcontainerHostName=192.168.56.1

   If necessary replace the IP addresses.
   

3. In your run configuration in IntelliJ you have to add these two variables seleniumServerHostName and containerHostName as well.
   

   
   

3. Fancy shell script + desktop launcher for the Selenium server

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Double-click your script and you're good to go! 

Jetty 9 compatible IntelliJ setup

Disclaimer: This setup has only been tried on two machines so far. The procedure might need to be completed, or adapted.

In IntelliJ, go to Edit Configurations. For Tomcat, insert the following VM options:

-Xms128M -Xmx1048M -Djava.awt.headless=true -Dfile.encoding=UTF-8 -XX:MaxPermSize=256m -DseleniumServerHostName=192.168.56.101 -DcontainerHostName=192.168.56.1 

Also, in the Deployment tab, add two artifacts:

• magnolia-test-webapp:war exploded, with 'Application context' set to /magnoliaTest
• magnolia-test-public-webapp:war exploded, with 'Application context' set to /magnoliaTestPublic

In that same window, select JUnit under Defaults in the left pane. Insert the following VM options:

-ea -DseleniumServerHostName=192.168.56.101 -DcontainerHostName=192.168.56.1 -DcontainerRootURL=http://192.168.56.1:8080/ 

Next step is to clean and rebuild both instances:

cd ce/magnolia-integration-tests/magnolia-test-public-webapp/; mvn clean install; rm -rf overlays
cd ce/magnolia-integration-tests/magnolia-test-webapp/; mvn clean install; rm -rf overlays

Once done, go in the 'Maven projects' sidebar in the IDE (on the top right), and click on 'Reimport all Maven projets' (blue circular arrow).

Then

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1. Tomcat from the IDE

2. selenium-server.sh on the VM

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1. Both exploded wars are deployed at Tomcat startup (check out the log)
2. http://localhost:8080/magnoliaTest can be accessed on the host machine
3. http://192.168.56.1:8080 can be accessed from the VM

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1. http://localhost:8080/magnoliaTest/.magnolia/
2. http://localhost:8080/magnoliaTestPublic/.magnolia/

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Tips for simulating low-end hardware (like on Jenkins test runs)

When tests seem to fail randomly in a non-reproducible manner on from Jenkins, it's sometimes related to slower hardware compared to local execution. To be more consistent and robust, it can be helpful to mimic such a low-end environment.

Use low screen resolution

Some failures (like hidden dialog commit buttons) only occur on screens with low resolution. With VirtualBox guest extensions properly installed, you should be able to simply resize the VM window and the guest's virtual screen should automatically adjust. As a reference for size, screenshots from failed Jenkins build may be used; or just roughly 1000 x 700 px.

Throttle Magnolia

Other test failures are caused by racing conditions only surfacing on slow systems, where certain elements take longer to load than usual. For Linux (now OS X too), there's a command line tool called cpulimit to set an upper CPU time percentage limit for certain processes.

• On Ubuntu, install with sudo apt-get install cpulimit or simply click here (apt-url)
• On OS X, clone it from GitHub and check the README for build instructions or with brew → cpulimit with brew

Setting the limit to 5% for the process with id 1234 is done by

cpulimit -l 5 -i 1234

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