Rails 3.1 Jasmine testing

jasmine.yml

# src_files
#
# Return an array of filepaths relative to src_dir to include before jasmine specs.
# Default: []
#
# EXAMPLE:
#
# src_files:
#   - lib/source1.js
#   - lib/source2.js
#   - dist/**/*.js
#
src_files:
  - spec/javascripts/generated/assets/action_screen*.js

# stylesheets
#
# Return an array of stylesheet filepaths relative to src_dir to include before jasmine specs.
# Default: []
#
# EXAMPLE:
#
# stylesheets:
#   - css/style.css
#   - stylesheets/*.css
#
stylesheets:
  - stylesheets/**/*.css

# helpers
#
# Return an array of filepaths relative to spec_dir to include before jasmine specs.
# Default: ["helpers/**/*.js"]
#
# EXAMPLE:
#
# helpers:
#   - helpers/**/*.js
#
helpers:
  - test_helpers/**/*.js

# spec_files
#
# Return an array of filepaths relative to spec_dir to include.
# Default: ["**/*[sS]pec.js"]
#
# EXAMPLE:
#
# spec_files:
#   - **/*[sS]pec.js
#
spec_files:
  - '**/*[sS]pec.js'

# src_dir
#
# Source directory path. Your src_files must be returned relative to this path. Will use root if left blank.
# Default: project root
#
# EXAMPLE:
#
# src_dir: public
#
src_dir:

# spec_dir
#
# Spec directory path. Your spec_files must be returned relative to this path.
# Default: spec/javascripts
#
# EXAMPLE:
#
# spec_dir: spec/javascripts
#
spec_dir: spec/javascripts

jasmine_config.rb

# spec/javascripts/support/jasmine_config.rb
# when jasmine starts the server out-of-process, it needs this in order to be able to invoke the asset tasks
unless Object.const_defined?(:Rake)
  require 'rake'
  load File.expand_path('../../../../Rakefile', __FILE__)
end

module Jasmine
  class Config

    def js_files(spec_filter = nil)
      # remove all generated files
      generated_files_directory = File.expand_path("../../generated", __FILE__)
      rm_rf generated_files_directory, :secure => true

      precompile_app_assets
      compile_jasmine_javascripts

      # this is code from the original jasmine config js_files method - you could also just alias_method_chain it
      spec_files_to_include = spec_filter.nil? ? spec_files : match_files(spec_dir, [spec_filter])
      src_files.collect { |f| "/" + f } + helpers.collect { |f| File.join(spec_path, f) } + spec_files_to_include.collect { |f| File.join(spec_path, f) }
    end

    private

    # this method compiles all the same javascript files your app will
    def precompile_app_assets
      puts "Precompiling assets..."

      ENV["RAILS_GROUPS"] ||= "assets"
      ENV["RAILS_ENV"] ||= "test"

      # make sure the Rails environment is loaded
      #::Rake.application['environment'].reenable
      ::Rake.application['environment'].invoke

      config = Rails.application.config
      config.assets.compile = true
      config.assets.digest = false
      config.assets.digests = {}

      env      = Rails.application.assets
      target   = Rails.root.join("spec", "javascripts", "generated", "assets")
      compiler = Sprockets::StaticCompiler.new(env,
                                               target,
                                               config.assets.precompile,
                                               :manifest_path => config.assets.manifest,
                                               :digest => config.assets.digest,
                                               :manifest => false)
      compiler.compile
    end

    # this method compiles all of the spec files into js files that jasmine can run
    def compile_jasmine_javascripts
      puts "Compiling jasmine coffee scripts into javascript..."
      root = File.expand_path("../../../../spec/javascripts", __FILE__)
      destination_dir = File.expand_path("../../generated/specs", __FILE__)

      glob = File.expand_path("**/*.js.coffee", root)

      Dir.glob(glob).each do |srcfile|
        srcfile = Pathname.new(srcfile)
        destfile = srcfile.sub(root, destination_dir).sub(".coffee", "")
        FileUtils.mkdir_p(destfile.dirname)
        File.open(destfile, "w") { |f| f.write(CoffeeScript.compile(File.new(srcfile))) }
      end
    end

  end
end

# Note - this is necessary for rspec2, which has removed the backtrace
module Jasmine
  class SpecBuilder
    def declare_spec(parent, spec)
      me = self
      example_name = spec["name"]
      @spec_ids << spec["id"]
      backtrace = @example_locations[parent.description + " " + example_name]
      parent.it example_name, {} do
        me.report_spec(spec["id"])
      end
    end
  end
end