Merge pull request #421 from Filipovici-Andrei/master

(maint) correct test when java is not installed

spec/unit/facter/java_version_spec.rb

@@ -63,6 +63,7 @@ describe 'java_version' do
 
       it do
         allow(Facter::Util::Resolution).to receive(:exec) # Catch all other calls
+        allow(Facter::Util::Resolution).to receive(:which).and_return(nil)
         expect(Facter.value(:java_version)).to be_nil
       end
     end