Mocking validate_cmd in Puppet

gistfile1.rb

require 'spec_helper'

describe 'sudo::sudoers', :type => :define do
  let(:title) { 'world.domination' }

  if (Puppet.version >= '3.5.0')
    context "validating content with puppet #{Puppet.version}" do
      let(:params) { { :users => ['joe'] } }
      let(:facts) {{ :puppetversion => Puppet.version }}

      it {
        should contain_file('/etc/sudoers.d/world_domination').with_validate_cmd('/usr/sbin/visudo -c -f %')
      }
    end
  else
    context "validating content with puppet #{Puppet.version}" do
      let(:params) { { :users => ['joe'] } }
      let(:facts) {{ :puppetversion => Puppet.version }}

      it { 
        allow(Puppet::Util::Execution).to receive(:execute).with("/usr/sbin/visudo -c -f %").
          and_return 1
        should contain_file('/etc/sudoers.d/world_domination').with_validate_cmd(nil) 
      }
    end
  end
end