context_spec.rb fails when run in isolation

$ bundle exec rspec spec/unit/pops/lookup/context_spec.rb

Run options: exclude {:broken=>true, :benchmark=>true}

.................F...

Failures:

  1) Puppet::Pops::Lookup::Context an instance with cached_file_data and multiple compilations will invalidate cache if file changes

     Failure/Error: expect(logs).to eql(["{parsed => a: value a\n}", "{parsed => b: value b\n}"])

       expected: ["{parsed => a: value a\n}", "{parsed => b: value b\n}"]

            got: ["{parsed => a: value a\n}", "{parsed => a: value a\n}"]

       (compared using eql?)

       Diff:

       @@ -1,3 +1,3 @@

        {parsed => a: value a\n}

       -{parsed => b: value b\n}

       +{parsed => a: value a\n}

     # ./spec/unit/pops/lookup/context_spec.rb:228:in `block (5 levels) in <module:Lookup>'