Better testing: Rails 4 app

.gitignore

@@ -6,10 +6,17 @@
 *.swp
 **/*.swp
 Gemfile.lock
-gemfiles/rails_3_2.gemfile.lock
+gemfiles/*.gemfile.lock
+
 test_apps/rails_3_2/.bundle
 test_apps/rails_3_2/Gemfile.lock
 test_apps/rails_3_2/db/*.sqlite3
 test_apps/rails_3_2/log/*.log
 test_apps/rails_3_2/tmp
-test_apps/rails_3_2/public/assets
+test_apps/rails_3_2/public/assets
+test_apps/rails_4/.bundle
+test_apps/rails_4/Gemfile.lock
+test_apps/rails_4/db/*.sqlite3
+test_apps/rails_4/log/*.log
+test_apps/rails_4/tmp
+test_apps/rails_4/public/assets

Appraisals

@@ -2,4 +2,9 @@
 appraise "rails_3_2" do
   gem "rails",     "3.2.13"
   gem "paperclip", "3.4.0"
+end
+
+appraise "rails_4" do
+  gem "rails",     "4.0.2"
+  gem "paperclip", "4.1.0"
 end

README.md

@@ -52,11 +52,16 @@ If you're rendering it on ajax ensure to call init_papercrop() in js after loadi
 
 ### Running the Tests
 
-We are using a dummy application to handle some of our test cases. You can find this in the `/test_app` directory and should be able to run this as a regular Rails 4 app _(using the `rails s` command)_ if you're interested in taking a look. You may need to create the mock database for the `test_app` before your tests will start to pass. This means you need to run `rake db:create db:migrate db:test:prepare` from within the `test_app` directory.
+We are using dummy applications to handle some of our test cases with different Gemfiles using [Appraisal](https://github.com/thoughtbot/appraisal). You can find them in the `/test_apps` directory and should be able to run them as a regular Rails app _(using the `rails s` command)_ if you're interested in taking a look. You may need to create mock databases for the `test_apps` before your tests will start to pass. This means you need to run the classics `rake db:create db:migrate db:test:prepare` through appraisal from the root directory.
+
+    appraisal rails_3_2 rake db:create db:migrate
+    appraisal rails_4 rake db:create db:migrate
+
+Append RAILS_ENV=test to both commands to prepare each database for testing
 
 In order to fully test our gem, we needed to use [Selenium](http://docs.seleniumhq.org/download/). Getting this setup is beyond the scope of this Readme.
 
-Once you have everything setup, you should be able `bundle exec rake` from the root directory have everything run. If you've installed Selenium properly, you should see an automated instance of your browser _(eg. Firefox)_ pop up and run through some of the integration tests.
+Once you have everything setup, you should be able `appraisal rake` from the root directory have everything run. If you've installed Selenium properly, you should see an automated instance of your browser _(eg. Firefox)_ pop up and run through some of the integration tests.
 
 That's all!
 

Rakefile

@@ -7,7 +7,13 @@ require 'rspec/core'
 require 'rspec/core/rake_task'
 RSpec::Core::RakeTask.new(:spec)
 
-APP_RAKEFILE = File.expand_path("../test_apps/rails_3_2/Rakefile", __FILE__)
+ENV["TEST_APP"] = if ENV["APPRAISAL_INITIALIZED"]
+  ENV["BUNDLE_GEMFILE"].split('/').last.split('.').first
+else
+  "rails_4"
+end
+
+APP_RAKEFILE = File.expand_path("../test_apps/#{ENV["TEST_APP"]}/Rakefile", __FILE__)
 load 'rails/tasks/engine.rake'
 
 task :default => :spec

gemfiles/rails_4.gemfile

@@ -0,0 +1,8 @@
+# This file was generated by Appraisal
+
+source "http://rubygems.org"
+
+gem "rails", "4.0.2"
+gem "paperclip", "4.1.0"
+
+gemspec :path => "../"

spec/spec_helper.rb

@@ -1,6 +1,8 @@
 # This file is copied to spec/ when you run 'rails generate rspec:install'
 ENV["RAILS_ENV"] = 'test'
-require File.expand_path("../../test_apps/rails_3_2/config/environment", __FILE__)
+ENV["TEST_APP"]  ||= 'rails_4'
+
+require File.expand_path("../../test_apps/#{ENV["TEST_APP"]}/config/environment", __FILE__)
 require 'rspec/rails'
 require 'rspec/autorun'
 require 'database_cleaner'

test_apps/rails_3_2/app/views/landscapes/_form.html.erb

@@ -20,6 +20,6 @@
     <%= f.file_field :picture %>
   </div>
   <div class="actions">
-    <%= f.submit  %>
+    <%= f.submit %>
   </div>
 <% end %>

test_apps/rails_4/Gemfile

@@ -0,0 +1,21 @@
+source 'https://rubygems.org'
+
+gem 'rails', '4.0.2'
+gem 'sqlite3'
+gem 'jquery-rails'
+gem 'jbuilder', '~> 1.2'
+gem 'paperclip', '4.1.0'
+gem 'papercrop', :path => "../.."
+
+group :assets do 
+  gem 'sass-rails', '~> 4.0.0'
+  gem 'uglifier', '>= 1.3.0'
+  gem 'coffee-rails', '~> 4.0.0'
+  gem 'therubyracer', platforms: :ruby
+end
+
+group :doc do
+  # bundle exec rake doc:rails generates the API under doc/api.
+  gem 'sdoc', require: false
+end
+

test_apps/rails_4/Rakefile

@@ -0,0 +1,6 @@
+# Add your own tasks in files placed in lib/tasks ending in .rake,
+# for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.
+
+require File.expand_path('../config/application', __FILE__)
+
+Rails4::Application.load_tasks