....
Failures:

  1) hiera foss puppet 4 other_backends testing gsub and regex
     Failure/Error: expect('!ruby/sym json'.to_yaml.gsub(/---\s+/, '').gsub(/\!ruby\/sym\s/, ':')).to eq ":json\n"
     
       expected: ":json\n"
            got: "\":json\"\n"
     
       (compared using ==)
     
       Diff:
       @@ -1 +1 @@
       -:json
       +":json"
       
     # ./spec/classes/hiera_spec.rb:86:in `block (4 levels) in <top (required)>'

  2) hiera foss puppet 4 other_backends testing redis backend symbol
     Failure/Error: expect(redis[:redis]).to eq(':json')
     
       expected: ":json"
            got: nil
     
       (compared using ==)
     # ./spec/classes/hiera_spec.rb:95:in `block (4 levels) in <top (required)>'

Finished in 11.59 seconds (files took 3.69 seconds to load)
96 examples, 2 failures

Failed examples:

rspec ./spec/classes/hiera_spec.rb:85 # hiera foss puppet 4 other_backends testing gsub and regex
rspec ./spec/classes/hiera_spec.rb:93 # hiera foss puppet 4 other_backends testing redis backend symbol