Add expectation demonstrating that the class under test does not get passed the desired package_version values.

Author: mbaynton

spec/classes/puppet_agent_spec.rb

@@ -122,6 +122,7 @@ def global_facts(facts, os)
 
             it { is_expected.to compile.with_all_deps }
             it { expect { catalogue }.not_to raise_error }
+            it { is_expected.to contain_class('puppet-agent').with_package_version(version) }
           end
         end