diff --git a/spec/classes/fluentd_config_spec.rb b/spec/classes/fluentd_config_spec.rb
index aa4e1e3..cdbb578 100644
--- a/spec/classes/fluentd_config_spec.rb
+++ b/spec/classes/fluentd_config_spec.rb
@@ -1,46 +1,31 @@
 require 'spec_helper'
 
 describe 'fluentd::config', :type => :class do
-  shared_examples 'when called with no parameters' do
-    it {
-      should contain_file('/etc/td-agent/td-agent.conf').with({
-        'ensure' => 'file',
-        'owner'  => 'root',
-        'group'  => 'root',
-        'source' => 'puppet:///modules/fluentd/td-agent.conf',
-        'notify' => 'Class[Fluentd::Service]'
-      })
+  on_supported_os.each do |os, facts|
+    context "on #{os}" do
+      let :facts do
+        facts
+      end
 
-      should contain_file('/etc/td-agent/conf.d').with({
-        'ensure' => 'directory',
-        'owner'  => 'td-agent',
-        'group'  => 'td-agent',
-        'mode'   => '0750'
-      })
-    }
-  end
+      describe 'when called with no parameters' do
 
-  context 'when osfamily is Debian' do
-    let(:facts) {
-      {
-        :osfamily        => 'Debian',
-        :lsbdistid       => 'Ubuntu',
-        :operatingsystem => 'Ubuntu',
-        :lsbdistcodename => 'precise',
-        :architecture    => 'amd64',
-      }
-    }
+        it {
+          should contain_file('/etc/td-agent/td-agent.conf').with({
+            'ensure' => 'file',
+            'owner'  => 'root',
+            'group'  => 'root',
+            'source' => 'puppet:///modules/fluentd/td-agent.conf',
+            'notify' => 'Class[Fluentd::Service]'
+          })
 
-    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'
+          should contain_file('/etc/td-agent/conf.d').with({
+            'ensure' => 'directory',
+            'owner'  => 'td-agent',
+            'group'  => 'td-agent',
+            'mode'   => '0750'
+          })
+        }
+      end
+    end
   end
 end