Ruby also has its built-in unit testing library called Test::Unit, but most people like using Behavior-Driven Development (BDD) when using Ruby, and Rails especially. There are two popular BBD frameworks: RSpec and Cucumber.
Quote from the RSpec.info website:
"RSpec is a testing tool for the Ruby programming language. Born under the banner of Behavior-Driven Development, it is designed to make Test-Driven Development a productive and enjoyable experience."
Quote from the Cucumber repository:
"Cucumber is a tool that executes plain-text functional descriptions as automated tests."
We are lucky that there is a single package for Sublime that supports the three testing frameworks: Test::Unit, RSpec, and Cucumber. It's called RubyTest and can be found on https://github.com/maltize/sublime-text-2-ruby-tests.
To install the RubyTest package, we'll use Package Control. Let's open the command palette by pressing Ctrl + Shift + P in Windows or Linux and Command + Shift + P in OS X. Choose Install Package and then install the RubyTest package. The RubyTest package doesn't include any snippets but has some useful commands instead. Here is a list of all the commands and their shortcuts:
|
RubyTest command |
Windows/Linux |
OS X |
|---|---|---|
|
Run single test |
Ctrl + Shift + R |
Command + Shift + R |
|
Run all tests from current file |
Ctrl + Shift + T |
Command + Shift + T |
|
Run last test(s) |
Ctrl + Shift + E |
Command + Shift + E |
|
Show test panel |
Ctrl + Shift + X |
Command + Shift + X |
|
Check RB, ERB Syntax |
Alt + Shift + V |
Option + Shift + V |
Here is how a testing result should look after being run using RubyTest:
We can see that we received 2 assertions, 1 failure, and 0 errors.
RubyTest also has a bundler autodetect feature that is based on the presence of a Gemfile in the project root directory. If this feature is enabled, RubyTest will automatically scan for the Gemfile and will add a prefix of bundle exec to any command it runs.
To enable this feature, we'll need to add a line to the RubyTest settings. We'll do it by going to Preferences | Package Settings | RubyTest | Settings – User and adding the following code:
{
"check_for_bundler": true
}