Before you start
Before getting started, there a few items to note.
Expected technical skills
Not to scare you away, but the following skills are assumed:
- Basic understanding of the command line
- Intermediate understanding of CSS/SASS
You can complete the exercises without these skills, but you may need to do a little extra research to fill in the details.
You will need to install some pre-requisites that the regression testing tools use. They are:
The things the tools need to run:
To check your version, open a command line and enter
ruby -v. This will output the current version of Ruby you have running.
If it doesn’t match what you want, never fear. If you’re using RVM, you can install and use a different version fairly easily. RBENV should manage this for you.
I recommend using NVM for Node. You can install Node manually, but NVM makes managing different versions much simpler.
- ImageMagick. Install via Homebrew:
brew install imagemagickor via NPM (
npm install -g imagemagick)
- PhantomJS. Install via Homebrew (
brew install phantomjs) or via NPM (
npm install -g phantomjs)
- CasperJS Install via Homebrew
brew install casperjsor via NPM (
npm install -g casperjs)
Having Installation Troubles?
You can use the thoughtbot/laptop repo to help with dependency installation. It is an install script that takes care of everything you need besides phantom/casper and the tools themselves.
PG gem install issues?
Check out this Stack Overflow question.
Try it on a virtual machine
Sometimes we customize our machines a little too much, or end up with an out of date dependency that just won’t upgrade, causing installation frustration and dependency nightmares. If you’re faced with a situation like this, you can try working off of a virtual machine using a tool like Vagrant. This tutorial doesn’t go in to detail on how to do that though.