Add Support for Sprockets 3.0

Gemfile

@@ -2,4 +2,4 @@ source 'https://rubygems.org'
 gemspec
 
 gem "railties", "~> 4.2.0"
-gem "sprockets-rails"
+gem "sprockets-rails", ">= 3.0"

konacha.gemspec

@@ -17,12 +17,12 @@ the asset pipeline and engines.}
   gem.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
   gem.name          = "konacha"
   gem.require_paths = ["lib"]
-  gem.version       = "3.7.0"
+  gem.version       = "3.8.0"
   gem.license       = "MIT"
 
   gem.add_dependency "railties", ">= 3.1", "< 5"
   gem.add_dependency "actionpack", ">= 3.1", "< 5"
-  gem.add_dependency "sprockets", ">= 2", "< 4"
+  gem.add_dependency "sprockets", ">= 3", "< 4"
   gem.add_dependency "capybara"
   gem.add_dependency "colorize"
   gem.add_dependency "tilt"

lib/konacha.rb

@@ -60,5 +60,20 @@ def spec_paths
         }.sort
       end
     end
+
+    def precompiled_assets
+      %W(konacha.css
+         chai.js
+         mocha.js
+         konacha/parent.js
+         konacha/iframe.js
+         konacha/runner.js).concat(spec_paths).map do |path|
+        path.gsub(/\.js\.coffee$/, ".js").gsub(/\.coffee$/, ".js")
+      end
+    end
+
+    def asset_precompiled?(logical_path)
+      precompiled_assets.include? logical_path
+    end
   end
 end

lib/konacha/engine.rb

@@ -7,11 +7,14 @@ class Engine < ::Rails::Engine
     config.konacha = ActiveSupport::OrderedOptions.new
 
     def self.application(app)
+      app.config.cache_classes = false
+      sprockes_env = Sprockets::Railtie.build_environment(app)
+
       Rack::Builder.app do
         use Rack::ShowExceptions
 
         map app.config.assets.prefix do
-          run app.assets
+          run sprockes_env
         end
 
         map "/" do
@@ -37,7 +40,6 @@ def self.formatters
       options.spec_matcher ||= /_spec\.|_test\./
       options.port         ||= 3500
       options.host         ||= 'localhost'
-      options.application  ||= self.class.application(app)
       options.driver       ||= :selenium
       options.stylesheets  ||= %w(application)
       options.javascripts  ||= %w(chai konacha/iframe)
@@ -47,7 +49,16 @@ def self.formatters
 
       spec_dirs = [options.spec_dir].flatten
       app.config.assets.paths += spec_dirs.map{|d| app.root.join(d).to_s}
-      app.config.assets.raise_runtime_errors = false
+      options.application  ||= self.class.application(app)
+    end
+
+    config.after_initialize do
+      ActiveSupport.on_load(:action_view) do
+        default_checker = ActionView::Base.precompiled_asset_checker
+        ActionView::Base.precompiled_asset_checker = -> logical_path do
+          default_checker[logical_path] || Konacha.asset_precompiled?(logical_path)
+        end
+      end
     end
   end
 end