diff --git a/spec/classes/varnish_spec.rb b/spec/classes/varnish_spec.rb
index 861995c..b4a86a1 100644
--- a/spec/classes/varnish_spec.rb
+++ b/spec/classes/varnish_spec.rb
@@ -1,137 +1,137 @@
 require 'spec_helper'
 
 describe 'varnish', type: :class do
   ['3.0', '4.0', '4.1', '5.0', '5.1', '5.2', '6.0', '6.0lts', '6.1'].each do |version|
     on_supported_os.each do |os, facts|
       context "Varnish #{version} on #{os}" do
         let(:facts) do
           facts.merge(path: '/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin:/snap/bin:/opt/puppetlabs/bin')
         end
 
         let(:params) do
           {
             varnish_version: version,
           }
         end
 
         should_fail = 0
         case version
         when '3.0'
           if facts[:operatingsystem] == 'Ubuntu' && Gem::Version.new(facts[:operatingsystemmajrelease]) >= Gem::Version.new('16.04')
             it { is_expected.to raise_error(Puppet::Error, %r{Varnish 3 from Packagecloud is not supported after Ubuntu 14.04 \(Trusty\)}) }
             should_fail = 1
           end
         when '5.0'
           if facts[:osfamily] == 'RedHat'
             case facts[:operatingsystemmajrelease]
             when '6'
               it { is_expected.to raise_error(Puppet::Error, %r{Varnish 5.0 from Packagecloud is not supported on RHEL\/CentOS 6}) }
               should_fail = 1
             when '7'
               # rubocop:disable LineLength
               it { is_expected.to raise_error(Puppet::Error, %r{Varnish 5.0 on RHEL\/CentOS 7 has a known packaging bug in the varnish_reload_vcl script, please use 5.1 instead. If the bug has been fixed, please submit a pull request to remove this message.}) }
               # rubocop:enable LineLength
               should_fail = 1
             end
           elsif facts[:osfamily] == 'Debian'
             case facts[:lsbdistcodename]
             when 'wheezy'
               it { is_expected.to raise_error(Puppet::Error, %r{Varnish 5.0 from Packagecloud is not supported on Debian 7 \(Wheezy\)}) }
               should_fail = 1
             when 'trusty'
               # rubocop:disable LineLength
               it { is_expected.to raise_error(Puppet::Error, %r{Varnish 5.0 has a known packaging bug in the reload-vcl script, please use 5.1 instead. If the bug has been fixed, please submit a pull request to remove this message.}) }
               # rubocop:enable LineLength
               should_fail = 1
             end
           end
-        when /6/
+        when %r{6}
           if facts[:osfamily] == 'RedHat'
             if facts[:operatingsystemmajrelease] == '6'
               it { is_expected.to raise_error(Puppet::Error, %r{Varnish 6.0 and above from Packagecloud is not supported on RHEL\/CentOS 6}) }
               should_fail = 1
             end
           elsif facts[:osfamily] == 'Debian'
             if facts[:operatingsystem] == 'Debian' && facts[:lsbdistcodename] != 'stretch'
               it { is_expected.to raise_error(Puppet::Error, %r{Varnish 6.0 and above is only supported on Debian 9 \(Stretch\)}) }
               should_fail = 1
             end
 
             if facts[:operatingsystem] == 'Ubuntu' && Gem::Version.new(facts[:operatingsystemmajrelease]) < Gem::Version.new('16.04')
               it { is_expected.to raise_error(Puppet::Error, %r{Varnish 6.0 and above is only supported on Ubuntu 16.04 \(Xenial\) and newer}) }
               should_fail = 1
             end
           end
         end
 
         if should_fail == 0
           it { is_expected.to compile.with_all_deps }
 
           if (facts[:osfamily] == 'RedHat' && facts[:operatingsystemmajrelease] == '7' && version != '3.0') ||
              (facts[:osfamily] == 'Debian' && (facts[:lsbdistcodename] == 'jessie' || facts[:lsbdistcodename] == 'xenial'))
             it { is_expected.to contain_file('/etc/systemd/system/varnish.service') }
             it { is_expected.to contain_exec('varnish_systemctl_daemon_reload') }
           end
 
           case facts[:osfamily]
           when 'RedHat'
 
             if facts[:operatingsystemmajrelease] == '6' && version != '3.0'
               it { is_expected.to contain_selinux__module('varnishpol') }
             end
 
             it { is_expected.to contain_file('/etc/sysconfig/varnish') }
             it { is_expected.to contain_yumrepo('varnish-cache') }
             it { is_expected.to contain_yumrepo('varnish-cache-source') }
           when 'Debian'
             it { is_expected.to contain_file('/etc/default/varnish') }
             it { is_expected.to contain_package('apt-transport-https') }
             it { is_expected.to contain_apt__source('varnish-cache') }
           end
 
         end
       end
     end
   end
 
   context 'supported operating systems' do
     let(:facts) do
       {
         osfamily: 'RedHat',
         operatingsystem: 'CentOS',
         operatingsystemmajrelease: '7',
         path: '/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin:/snap/bin:/opt/puppetlabs/bin',
         lsbdistrelease: nil,
       }
     end
 
     it { is_expected.to contain_class('varnish::params') }
     it { is_expected.to contain_class('varnish::repo').that_comes_before('Class[varnish::install]') }
     it { is_expected.to contain_class('varnish::install').that_comes_before('Class[varnish::secret]') }
     it { is_expected.to contain_class('varnish::secret').that_comes_before('Class[varnish::config]') }
     it { is_expected.to contain_class('varnish::config').that_notifies('Class[varnish::service]') }
     it { is_expected.to contain_class('varnish::config').that_comes_before('Class[varnish::service]') }
     it { is_expected.to contain_class('varnish::service') }
 
     it { is_expected.to contain_file('/etc/varnish/secret') }
     it { is_expected.to contain_exec('Generate Varnish secret file') }
     it { is_expected.to contain_package('varnish') }
     it { is_expected.to contain_service('varnish') }
     it { is_expected.to contain_exec('vcl_reload') }
   end
 
   context 'unsupported operating systems' do
     describe 'varnish class fail on unsupported OS' do
       let(:facts) do
         {
           osfamily: 'Darwin',
           operatingsystem: 'Darwin',
           path: '/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin:/snap/bin:/opt/puppetlabs/bin',
           lsbdistrelease: nil,
         }
       end
 
       it { is_expected.to raise_error(Puppet::Error, %r{Darwin not supported}) }
     end
   end
 end