Add spec test for rabbitmq template

Closes #232

Signed-off-by: Mike Fiedler <miketheman@gmail.com>

spec/integrations/rabbitmq_spec.rb

@@ -0,0 +1,65 @@
+describe 'datadog::rabbitmq' do
+  expected_yaml = <<-EOF
+    init_config:
+
+    instances:
+      - rabbitmq_api_url: http://localhost:15672/api/
+        rabbitmq_user: guest
+        rabbitmq_pass: guest
+        tags:
+          - optional_tag1
+          - optional_tag2
+        nodes:
+          - rabbit@localhost
+          - rabbit2@domain
+        nodes_regexes:
+          - bla.*
+        queues:
+          - queue1
+          - queue2
+        queues_regexes:
+          - thisqueue-.*
+          - another_\\d+queue
+        vhosts:
+          - vhost1
+          - vhost2
+  EOF
+
+  cached(:chef_run) do
+    ChefSpec::SoloRunner.new(step_into: ['datadog_monitor']) do |node|
+      node.automatic['languages'] = { 'python' => { 'version' => '2.7.2' } }
+      node.set['datadog'] = {
+        api_key: 'someapikey',
+        rabbitmq: {
+          instances: [
+            {
+              api_url: 'http://localhost:15672/api/',
+              user: 'guest',
+              pass: 'guest',
+              tags: ['optional_tag1', 'optional_tag2'],
+              nodes: ['rabbit@localhost', 'rabbit2@domain'],
+              nodes_regexes: ['bla.*'],
+              queues: ['queue1', 'queue2'],
+              queues_regexes: ['thisqueue-.*', 'another_\\d+queue'],
+              vhosts: ['vhost1', 'vhost2']
+            }
+          ]
+        }
+      }
+    end.converge(described_recipe)
+  end
+
+  subject { chef_run }
+
+  it_behaves_like 'datadog-agent'
+
+  it { is_expected.to include_recipe('datadog::dd-agent') }
+
+  it { is_expected.to add_datadog_monitor('rabbitmq') }
+
+  it 'renders expected YAML config file' do
+    expect(chef_run).to render_file('/etc/dd-agent/conf.d/rabbitmq.yaml').with_content { |content|
+      expect(YAML.load(content).to_json).to be_json_eql(YAML.load(expected_yaml).to_json)
+    }
+  end
+end

templates/default/rabbitmq.yaml.erb

@@ -1,3 +1,5 @@
+# Generated by Chef, local modifications will be overwritten
+
 instances:
   # for every instance a 'rabbitmq_api_url' must be provided, pointing to the api
   # url of the RabbitMQ Managment Plugin (http://www.rabbitmq.com/management.html)