use mocha mocking instead of punching ducks

lib/jasmine/headless/task.rb

@@ -44,16 +44,17 @@ module Jasmine
         end
         create_rails_compliant_task if defined?(Rails)
       end
+
       private
       def create_rails_compliant_task
-          if Rails.version >= "3.1.0"
-            desc 'Force generate static assets without an MD5 hash, all assets end with -test.<ext>'
-            task 'assets:precompile:for_testing' => :environment do
-              Rails.application.assets.digest_class = Digest::JasmineTest
+        if Rails.version >= "3.1.0"
+          desc 'Force generate static assets without an MD5 hash, all assets end with -test.<ext>'
+          task 'assets:precompile:for_testing' => :environment do
+            Rails.application.assets.digest_class = Digest::JasmineTest
 
-              Rake::Task['assets:precompile'].invoke
-            end
+            Rake::Task['assets:precompile'].invoke
           end
+        end
       end
     end
   end

spec/lib/jasmine/headless/task_spec.rb

@@ -1,38 +1,37 @@
 require 'spec_helper'
 require 'fakefs/spec_helpers'
 require 'jasmine/headless/task'
-
-module Jasmine
-  module Headless
-    class Task
-      def desc(block); end
-      def task(block); end
-    end
-  end
-end
+require 'mocha'
 
 describe Jasmine::Headless::Task do
   after do
     Object.send(:remove_const, :Rails) if defined?(Rails)
   end
 
-  context 'without Rails' do
-    it 'should not explode when Rails is undefined' do
-      Jasmine::Headless::Task.new('jasmine:headless')
-    end
-  end
-
-  context 'with Rails' do
+  describe 'define task' do
     before do
-      module Rails
-        def self.version
-          return "0"
-        end
+      Jasmine::Headless::Task.any_instance.stubs(:desc)
+      Jasmine::Headless::Task.any_instance.stubs(:task)
+    end
+
+    context 'without Rails' do
+      it 'should not explode when Rails is undefined' do
+        Jasmine::Headless::Task.new('jasmine:headless')
       end
     end
 
-    it 'should be OK if rails is defined' do
-      Jasmine::Headless::Task.new('jasmine:headless')
+    context 'with Rails' do
+      before do
+        module Rails
+          def self.version
+            return "0"
+          end
+        end
+      end
+
+      it 'should be OK if rails is defined' do
+        Jasmine::Headless::Task.new('jasmine:headless')
+      end
     end
   end
 end