feat: try serverspec

DESCRIPTION
    Used local runner to perform the following tasks on my Arch Linux
    dev machine

    1. Check if apache is installed on arch
    2. Check if httpd service is enabled and running
    3. Check if port 80 is listening

COMMENTS
    Limited capabilities but seems to have support for basic testing
    on mulitple environments: local, SSH and Docker API  using multiple
    configuration management tools like Puppet and Ansible.

REFERENCES

[0]: https://serverspec.org/tutorial.html
[1]: https://serverspec.org/resource_types.html

sandbox/serverspec/getting-started/.rspec

@@ -0,0 +1,2 @@
+--color
+--format documentation

sandbox/serverspec/getting-started/Gemfile

@@ -0,0 +1 @@
+gem 'serverspec'

sandbox/serverspec/getting-started/Rakefile

@@ -0,0 +1,27 @@
+require 'rake'
+require 'rspec/core/rake_task'
+
+task :spec    => 'spec:all'
+task :default => :spec
+
+namespace :spec do
+  targets = []
+  Dir.glob('./spec/*').each do |dir|
+    next unless File.directory?(dir)
+    target = File.basename(dir)
+    target = "_#{target}" if target == "default"
+    targets << target
+  end
+
+  task :all     => targets
+  task :default => :all
+
+  targets.each do |target|
+    original_target = target == "_default" ? target[1..-1] : target
+    desc "Run serverspec tests to #{original_target}"
+    RSpec::Core::RakeTask.new(target.to_sym) do |t|
+      ENV['TARGET_HOST'] = original_target
+      t.pattern = "spec/#{original_target}/*_spec.rb"
+    end
+  end
+end

sandbox/serverspec/getting-started/spec/localhost/sample_spec.rb

@@ -0,0 +1,37 @@
+require 'spec_helper'
+
+describe package('apache'), if: os[:family] == 'arch' do
+  it { should be_installed }
+end
+
+describe service('httpd'), if: os[:family] == 'arch' do
+  it { should be_enabled }
+  it { should be_running }
+end
+
+describe package('httpd'), if: os[:family] == 'redhat' do
+  it { should be_installed }
+end
+
+describe package('apache2'), if: os[:family] == 'ubuntu' do
+  it { should be_installed }
+end
+
+describe service('httpd'), if: os[:family] == 'redhat' do
+  it { should be_enabled }
+  it { should be_running }
+end
+
+describe service('apache2'), if: os[:family] == 'ubuntu' do
+  it { should be_enabled }
+  it { should be_running }
+end
+
+describe service('org.apache.httpd'), if: os[:family] == 'darwin' do
+  it { should be_enabled }
+  it { should be_running }
+end
+
+describe port(80) do
+  it { should be_listening }
+end

sandbox/serverspec/getting-started/spec/spec_helper.rb

@@ -0,0 +1,4 @@
+require 'serverspec'
+
+set :backend, :exec
+