diff --git a/spec/classes/munin_master_spec.rb b/spec/classes/munin_master_spec.rb
index a7c2069..b477416 100644
--- a/spec/classes/munin_master_spec.rb
+++ b/spec/classes/munin_master_spec.rb
@@ -1,109 +1,133 @@
 require 'spec_helper'
 
 describe 'munin::master' do
 
   [ :CentOS, :Debian, :RedHat, :Ubuntu ].each do |sc|
     context "Check for supported operatingsystem #{sc}" do
       include_context sc
       it { should compile }
       it { should contain_class('munin::master') }
       it {
         should contain_package('munin')
         should contain_file('/etc/munin/munin.conf')
         should contain_file('/etc/munin/munin-conf.d')
           .with_ensure('directory')
       }
     end
   end
 
   [ :SmartOS ].each do |sc|
     context "Check for supported operatingsystem #{sc}" do
       include_context sc
       it { should compile }
       it { should contain_class('munin::master') }
       it {
         should contain_package('munin')
         should contain_file('/opt/local/etc/munin/munin.conf')
         should contain_file('/opt/local/etc/munin/munin-conf.d')
           .with_ensure('directory')
       }
     end
   end
 
   context 'with default params' do
     it {
       should contain_file('/etc/munin/munin.conf')
         .with_content(/graph_strategy\s+cgi/)
         .with_content(/html_strategy\s+cgi/)
     }
   end
 
   context 'with html_strategy => cron' do
     let (:params) { { :html_strategy => 'cron' } }
     it {
       should contain_file('/etc/munin/munin.conf')
         .with_content(/html_strategy\s+cron/)
     }
   end
 
   context 'with graph_strategy => cron' do
     let (:params) { { :graph_strategy => 'cron' } }
     it {
       should contain_file('/etc/munin/munin.conf')
         .with_content(/graph_strategy\s+cron/)
     }
   end
 
   context 'with dbdir => /var/lib/munin' do
     let (:params) { { :dbdir => '/var/lib/munin' } }
     it {
       should contain_file('/etc/munin/munin.conf')
         .with_content(/dbdir\s+\/var\/lib\/munin/)
     }
   end
 
   context 'with htmldir => /var/www/munin' do
     let (:params) { { :htmldir => '/var/www/munin' } }
     it {
       should contain_file('/etc/munin/munin.conf')
         .with_content(/htmldir\s+\/var\/www\/munin/)
     }
   end
 
   context 'with logdir => /var/log/munin' do
     let (:params) { { :dbdir => '/var/log/munin' } }
     it {
       should contain_file('/etc/munin/munin.conf')
         .with_content(/dbdir\s+\/var\/log\/munin/)
     }
   end
 
   context 'with rudir => /var/run/munin' do
     let (:params) { { :dbdir => '/var/run/munin' } }
     it {
       should contain_file('/etc/munin/munin.conf')
         .with_content(/dbdir\s+\/var\/run\/munin/)
     }
   end
 
   context 'with tls => enabled' do
     let(:params) {
       {
         :tls => 'enabled',
         :tls_certificate => '/path/to/certificate.pem',
         :tls_private_key => '/path/to/key.pem',
         :tls_verify_certificate => 'yes',
       }
     }
 
     it { should compile }
     it {
       should contain_file('/etc/munin/munin.conf')
         .with_content(/tls = enabled/)
         .with_content(/tls_certificate = \/path\/to\/certificate\.pem/)
         .with_content(/tls_private_key = \/path\/to\/key\.pem/)
         .with_content(/tls_verify_certificate = yes/)
     }
   end
 
+  context 'with extra_config' do
+    token = '1b7febce-bb2d-4c18-b889-84c73538a900'
+    let(:params) do
+      { :extra_config => [ token ] }
+    end
+    it { should compile }
+    it do
+      should contain_file('/etc/munin/munin.conf')
+              .with_content(/#{token}/)
+    end
+  end
+
+  context 'with extra_config set to a string' do
+    token = '1b7febce-bb2d-4c18-b889-84c73538a900'
+    let(:params) do
+      { :extra_config => token }
+    end
+    it do
+      expect { should compile }
+        .to raise_error(Puppet::Error, /is not an Array/)
+    end
+
+  end
+
 end