Add an rspec unit test helper

focused_controller.gemspec

@@ -20,10 +20,10 @@ Gem::Specification.new do |s|
 
   s.add_dependency 'actionpack', '~> 3.2'
 
-  # specify any dependencies here; for example:
   s.add_development_dependency 'minitest', '~> 2.11.2'
   s.add_development_dependency 'capybara', '~> 1.1.2'
   s.add_development_dependency 'capybara_minitest_spec', '~> 0.2.1'
   s.add_development_dependency 'poltergeist', '~> 0.4.0'
-  # s.add_runtime_dependency "rest-client"
+  s.add_development_dependency 'rspec', '~> 2.8.0'
+  s.add_development_dependency 'rspec-rails', '~> 2.8.0'
 end

lib/focused_controller/rspec_helper.rb

@@ -0,0 +1,47 @@
+require 'focused_controller/test_helper'
+
+begin
+  # Requiring specific files rather than just 'rspec/rails' because I don't
+  # want to force the configuration that 'rspec/rails' adds on people if they
+  # haven't specifically chosen to receive it.
+  require 'rspec/rails/matchers'
+  require 'rspec/rails/adapters'
+  require 'rspec/rails/example/rails_example_group'
+rescue LoadError
+end
+
+module FocusedController
+  module RSpecHelper
+    def self.append_features(base)
+      base.class_eval do
+        # This must get included higher in the ancestor chain than
+        # this module so that inheritance works as desired
+        include FocusedController::TestHelper
+
+        extend ClassMethods
+
+        subject { controller }
+      end
+
+      super
+    end
+
+    if defined?(RSpec::Rails)
+      include RSpec::Rails::RailsExampleGroup
+      include RSpec::Rails::Matchers::RedirectTo
+      include RSpec::Rails::Matchers::RenderTemplate
+    end
+
+    module ClassMethods
+      def controller
+        controller = metadata[:example_group][:description_args].first
+
+        if controller.respond_to?(:new)
+          controller
+        else
+          super
+        end
+      end
+    end
+  end
+end

lib/focused_controller/test_helper.rb

@@ -1,5 +1,4 @@
-require 'action_dispatch/testing/test_request'
-require 'action_dispatch/testing/test_response'
+require 'action_dispatch'
 require 'active_support/concern'
 require 'active_support/core_ext/class/attribute'
 require 'active_support/hash_with_indifferent_access'
@@ -50,7 +49,9 @@ def controller
       end
 
       def include_routes
-        include controller._routes.named_routes.module
+        if controller.respond_to?(:_routes) && controller._routes
+          include controller._routes.named_routes.module
+        end
       end
     end
 

test/app/Gemfile

@@ -24,6 +24,9 @@ gem 'jquery-rails'
 
 gem 'focused_controller', :path => '../..'
 
+gem 'rspec'
+gem 'rspec-rails'
+
 # To use ActiveModel has_secure_password
 # gem 'bcrypt-ruby', '~> 3.0.0'
 

test/app/spec/spec_helper.rb

@@ -0,0 +1,4 @@
+require 'rails/application'
+require File.expand_path("../../config/environment", __FILE__)
+require 'rspec'
+require 'focused_controller/rspec_helper'

test/app/spec/unit/controllers/posts_controller_spec.rb

@@ -0,0 +1,59 @@
+require 'spec_helper'
+
+describe PostsController do
+  include FocusedController::RSpecHelper
+
+  before do
+    @post = Post.create(:title => 'Hello', :body => 'Omg')
+  end
+
+  describe PostsController::Index do
+    it "should get index" do
+      req
+      response.should be_success
+      subject.posts.should_not be(:nil)
+    end
+  end
+
+  describe PostsController::New do
+    it "should get new" do
+      req
+      response.should be_success
+    end
+  end
+
+  describe PostsController::Create do
+    it "should create post" do
+      expect { req :post => @post.attributes }.to change(Post, :count).by(1)
+      response.should redirect_to(post_path(subject.post))
+    end
+  end
+
+  describe PostsController::Show do
+    it "should show post" do
+      req :id => @post.id
+      response.should be_success
+    end
+  end
+
+  describe PostsController::Edit do
+    it "should get edit" do
+      req :id => @post.id
+      response.should be_success
+    end
+  end
+
+  describe PostsController::Update do
+    it "should update post" do
+      req :id => @post.id
+      response.should redirect_to(post_path(subject.post))
+    end
+  end
+
+  describe PostsController::Destroy do
+    it "should destroy post" do
+      expect { req :id => @post.id }.to change(Post, :count).by(-1)
+      response.should redirect_to(posts_path)
+    end
+  end
+end

test/helper.rb

@@ -3,4 +3,11 @@
 require 'minitest/autorun'
 require 'focused_controller'
 
+require 'rspec/core'
+
+# Don't want to actually use RSpec to run our tests
+module RSpec::Core::DSL
+  remove_method :describe
+end
+
 TEST_ROOT = File.expand_path('..', __FILE__)

test/unit/rspec_helper_test.rb

@@ -0,0 +1,83 @@
+require 'helper'
+require 'action_controller'
+require 'focused_controller/rspec_helper'
+
+module FocusedController
+  module RSpecHelper
+    module FakePostsController
+      class Action < ActionController::Base
+      end
+
+      class Index < Action
+      end
+
+      class Show < Action
+      end
+
+      class Edit < Action
+      end
+    end
+
+    index_spec = RSpec::Core::ExampleGroup.describe FakePostsController::Index do
+      include FocusedController::RSpecHelper
+    end
+
+    show_spec = nil
+    RSpec::Core::ExampleGroup.describe FakePostsController do
+      show_spec = describe FakePostsController::Show do
+        include FocusedController::RSpecHelper
+      end
+    end
+
+    edit_spec = RSpec::Core::ExampleGroup.describe "the edit action" do
+      include FocusedController::RSpecHelper
+      self.controller = FakePostsController::Edit
+    end
+
+    describe RSpecHelper do
+      it 'finds the correct controller class' do
+        index_spec.controller.must_equal FakePostsController::Index
+        show_spec.controller.must_equal FakePostsController::Show
+        edit_spec.controller.must_equal FakePostsController::Edit
+      end
+
+      subject { index_spec.new }
+
+      def must_fail(&block)
+        block.must_raise RSpec::Expectations::ExpectationNotMetError
+      end
+
+      def must_succeed(&block)
+        block.call
+        true.must_equal true # to count the assertion
+      end
+
+      it 'has a redirect_to matcher' do
+        must_fail { subject.should subject.redirect_to('/foo') }
+        subject.controller.redirect_to('/foo')
+        must_succeed { subject.should subject.redirect_to('/foo') }
+      end
+
+      it 'matches response type' do
+        must_succeed { subject.response.should subject.be_success }
+        must_fail    { subject.response.should subject.be_error }
+
+        subject.controller.render :status => :not_found
+
+        must_fail    { subject.response.should subject.be_success }
+        must_succeed { subject.response.should subject.be_missing }
+      end
+
+      it 'has a render_template matcher' do
+        subject.controller.render :foo
+
+        must_succeed { subject.response.should subject.render_template(:foo) }
+        must_fail    { subject.response.should subject.render_template(:bar) }
+      end
+
+      it 'sets the subject to be the controller instance' do
+        subject.subject.must_equal subject.controller
+      end
+    end
+  end
+end