use rspec-puppet-facts for fluentd_install_spec

spec/classes/fluentd_install_spec.rb

@@ -1,38 +1,21 @@
 require 'spec_helper'
 
 describe 'fluentd::install', :type => :class do
+  on_supported_os.each do |os, facts|
+    context "on #{os}" do
+      let :facts do
+        facts
+      end
 
-  shared_examples 'when called with no parameters' do
+      describe 'when called with no parameters' do
-    it {
+        it {
-      should contain_package('fluentd').with({
+          should contain_package('fluentd').with({
-        'ensure'          => 'installed',
+            'ensure'          => 'installed',
-        'name'            => 'td-agent',
+            'name'            => 'td-agent',
-        'install_options' => []
+            'install_options' => []
-      })
+          })
-    }
+        }
+      end
+    end
   end
-
-  context 'when osfamily is Debian' do
-    let(:facts) {
-      {
-        :osfamily        => 'Debian',
-        :lsbdistid       => 'Ubuntu',
-        :operatingsystem => 'Ubuntu',
-        :lsbdistcodename => 'precise',
-        :architecture    => 'amd64',
-      }
-    }
-    include_examples 'when called with no parameters'
-  end
-
-  context 'when osfamily is RedHat' do
-    let(:facts) {
-      {
-        :osfamily => 'RedHat',
-      }
-    }
-
-    include_examples 'when called with no parameters'
-  end
-
 end