spec/integration/data_binding.rb fails when run in isolation

~/w/puppet (master ↩☡-) bundle exec rspec spec/integration/data_binding.rb

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

FF

Failures:

  1) Data binding looks up data from hiera

     Failure/Error: expect(resource[:calling_module]).to eq("testing")

       expected: "testing"

            got: ""

       (compared using ==)

     # ./spec/integration/data_binding.rb:39:in `block (2 levels) in <top (required)>'

  2) Data binding works with the puppet backend configured, although it can't use it for lookup

     Failure/Error: catalog = compile_to_catalog("include testing::binding")

     Puppet::PreformattedError:

       Evaluation Error: Error while evaluating a Function Call, Could not find data item variable in any Hiera data file and no default supplied at /var/folders/2q/qhdc5tpx4knd4pjr1hdskmjc0000gn/T/rspecrun20151020-60612-1833ym7/puppetdir20151020-60612-1shfljv/testing/manifests/binding.pp:2:37 on node foonode