Add serverspec test to nginx role

nginx/.kitchen.yml

@@ -12,13 +12,21 @@ provisioner:
   require_ansible_source: true
   install_source_rev: "stable-2.0.0.1"
   require_chef_for_busser: false
+  idempotency_test: true
 
 platforms:
   - name: debian-8
 
+verifier:
+  name: serverspec
+
 suites:
   - name: default
     provisioner:
       name: ansible_playbook
       playbook: ./tests/test.yml
-      idempotency_test: true
+    verifier:
+      patterns:
+      - nginx/tests/spec/nginx_spec.rb
+      bundler_path: '/usr/local/bin'
+      rspec_path: '/usr/local/bin'

nginx/tests/spec/nginx_spec.rb

@@ -0,0 +1,9 @@
+require 'net/http'
+require 'uri'
+
+require 'serverspec'
+set :backend, :exec
+
+describe port(80) do
+  it { should be_listening }
+end