Meetings/2013-06-27

Cucumber and Page Objects: Writing Great Browser Tests
This session will take you through every step of writing an automated test for WikiLove, a real feature on Wikipedia, from the requirements to the executable code.

We'll start by crafting a plain English description of a software feature in the form of Given/When/Then statements for Cucumber.

Then we will turn that plain English description of the software feature into an executable test using the Page Object design pattern.

There will be kittens.

Programming knowledge is not required, although programming experience is helpful when we turn to implementing our Cucumber scenarios.

Agenda:


 * Discussion: create some Cucumber test scenarios for a particular Wikipedia feature.
 * Setup: install Ruby and prerequisites for Cucumber/Page Object tests.
 * Tech demo: Cucumber makes it easy to write the test steps.
 * Tech demo: create the Page Object for the test.
 * Finish: watch the tests run on your local machine, and check the test into the real Wikipedia repository

Setting up for testing

 * Create a user on beta labs if you don't already have one: http://en.wikipedia.beta.wmflabs.org/
 * On github download the code as a zip file from https://github.com/wikimedia/qa-browsertests/archive/master.zip or get it from https://github.com/wikimedia/qa-browsertests
 * In the /browsertests/config directory in your downloaded code:
 * Edit line 1 of /browsertests/config/config.yml to change  to
 * Create a file 'secret.yml' in the same directory /browsertests/config/secret.yml. Edit secret.yml to show

Setting up Ruby
$ ruby --version ruby 2.0.0p195 (2013-05-14 revision 40734) [x86_64-linux] $ cd browsertests $ gem update --system $ gem install bundler $ bundle install
 * Check that you have Ruby version 1.9.x or higher:
 * Install Ruby 1.9.x or higher if you don't already have it
 * for *nix systems use RVM $ \curl -L https://get.rvm.io | bash -s stable
 * for Windows use http://rubyinstaller.org/
 * then do:
 * In new terminals you may need to do  to use RVM properly

Run a test
If everything is set up properly, from a command line in the /browsertests directory, do

$ bundle exec cucumber features/wikilove.feature

and watch our test run in Firefox on your computer. Kittens!

Hack

 * As a group, improve the existing Cucumber scenarios
 * As a group, make a new Cucumber Scenario
 * Make the new tests run!