Painless Javascript testing for Rails 3.1
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This gem provides sane defaults for using Javascript test frameworks in the Rails 3.1 Asset Pipeline. It allows you to write and run Qunit or Jasmine tests while leveraging the new compiling power of Tilt and Sprockets 2. Now enabling more profit when you write your JS tests in CoffeeScript!

How it works

TestTrack is a mountable engine whichs provides routes to Javascript test runners pre-loaded with your application's code and tests.


1. Install the Test Track gem

In your Rails 3.1 app, just add it to your Gemfile, like this:

gem "test_track"

2. Create a Manfiest

TestTrack automatically adds test paths to your app's asset pipeline. The default locations are...

  • Jasmine - spec/javascripts
  • Qunit - test/javascripts

This is a good place for your manfiest file for your framework of choice. Here is a sample Jasmine manifest, called jasmine.js in spec/javascripts that includes our test suite and helpers:

// SUITE :: Jasmine
// SUITE MANIFEST :: spec/javascripts/jasmine.js
// TEST SRC DIR :: spec/javascripts
//= require helpers/spec_helper
//= require profile_spec
//= require user_spec

For Qunit, create qunit.js in test/javascripts, instead.

We would recommend that you place your test manifests in the directories listed above, as TestTrack will look for them there by default. Feel free to place these anywhere else in the asset pipeline, just don't forget to specify its location in an initializer. If it happens to be in the root of an asset directory, no additional configuration is required.

3. Set up Initializers (optional)

If you'd like to change a default, such as the name of your Jasmine manifest, try the following in config/initializers/test_track.rb:

TestTrack.setup do |config|
  config.qunit_manifest = "test/qunit"

To see this in action, check out the sample Rails code in test/dummy. See lib/test_track.rb for all available options.

4. Mount the TestTrack Engine

In your routes.rb:

mount TestTrack::Engine => "test"

And you're off the the races. An index is provided with links to the test runners. They would be accessible at /test/jasmine and /test/qunit in the example above.


In addition to the test runners, Sinon.js is included by default. It's a great set of tooling for mocking, spies, and XHR faking. In general, Sinon.js will not affect any pre-existing test suites, but there are some gotcha's. Be sure to check the out the documentation if you haven't used it before.

Sinon overwrites Jasmine's spyOn implementation, so be sure to not include it if you plan on using that part of Jasmine.

In Sinon's default settings, setTimeout and setInterval are overwritten. To change this behavior you need to modify Sinon's config object before your tests run.

sinon.config.useFakeTimers = false;

To not include Sinon, add the following to your TestTrack initiailizer. ] config.include_sinon = false


Obviously, you may not want to have these routes available if your app is running in :production. Try this in your routes.rb:

mount TestTrack::Engine => "test" unless Rails.env.production?


This project uses the MIT-LICENSE.