Added (possibly-broken) test harness

.travis.yml

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+language: ruby
+bundler_args: --without kitchen_vagrant
+rvm:
+- 2.1.1
+script:
+- bundle exec rake style

Gemfile

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+source 'https://rubygems.org'
+
+group :lint do
+  gem 'foodcritic', '~> 3.0'
+  gem 'rubocop', '~> 0.24'
+end
+
+group :unit do
+  gem 'berkshelf',  '~> 3.0'
+  gem 'chefspec',   '~> 3.1'
+end
+
+group :kitchen_common do
+  gem 'test-kitchen', '~> 1.2'
+end
+
+group :kitchen_vagrant do
+  gem 'kitchen-vagrant'
+end
+
+group :kitchen_cloud do
+  gem 'kitchen-digitalocean'
+  gem 'kitchen-ec2'
+end
+
+group :development do
+  gem 'ruby_gntp'
+  gem 'growl'
+  gem 'rb-fsevent'
+  gem 'guard', '~> 2.4'
+  gem 'guard-kitchen'
+  gem 'guard-foodcritic'
+  gem 'guard-rspec'
+  gem 'guard-rubocop'
+  gem 'rake'
+end

Rakefile

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+require 'rspec/core/rake_task'
+require 'rubocop/rake_task'
+require 'foodcritic'
+require 'kitchen'
+
+# Style tests. Rubocop and Foodcritic
+namespace :style do
+  desc 'Run Ruby style checks'
+  Rubocop::RakeTask.new(:ruby)
+
+  desc 'Run Chef style checks'
+  FoodCritic::Rake::LintTask.new(:chef) do |t|
+    t.options = {
+      :fail_tags => ['any'],
+      :tags => ['~FC005']
+    }
+  end
+end
+
+desc 'Run all style checks'
+task :style => ['style:chef', 'style:ruby']
+
+# Rspec and ChefSpec
+desc 'Run ChefSpec examples'
+RSpec::Core::RakeTask.new(:spec)
+
+# Integration tests. Kitchen.ci
+namespace :integration do
+  desc 'Run Test Kitchen with Vagrant'
+  task :vagrant do
+    Kitchen.logger = Kitchen.default_file_logger
+    Kitchen::Config.new.instances.each do |instance|
+      instance.test(:always)
+    end
+  end
+
+  desc 'Run Test Kitchen with cloud plugins'
+  task :cloud do
+    run_kitchen = true
+    if ENV['TRAVIS'] == 'true' && ENV['TRAVIS_PULL_REQUEST'] != 'false'
+      run_kitchen = false
+    end
+
+    if run_kitchen
+      Kitchen.logger = Kitchen.default_file_logger
+      @loader = Kitchen::Loader::YAML.new(:project_config => './.kitchen.cloud.yml')
+      config = Kitchen::Config.new(:loader => @loader)
+      config.instances.each do |instance|
+        instance.test(:always)
+      end
+    end
+  end
+end
+
+desc 'Run all tests on Travis'
+task :travis => ['style', 'spec', 'integration:cloud']
+
+# Default
+task :default => ['style', 'spec', 'integration:vagrant']