reproducing rspec-hiera-puppet example

gistfile1.txt

>>> ./modules/example/spec/classes/example_spec.rb

describe "example" do
  let(:hiera_data) { { :foo_message => "bar" } }

  it { should contain_notify("foo").with_message("bar") }
end

>>> ./modules/example/spec/manifests/site.pp #this just exists because rspec-puppet appears to insist on it?)

>>> ./modules/example/spec/spec_helper.rb

dir = File.expand_path(File.dirname(__FILE__))
$LOAD_PATH.unshift File.join(dir, 'lib')

require 'rspec-puppet'
require 'rspec-hiera-puppet'

specdir = File.expand_path(File.dirname(File.dirname(__FILE__)))

RSpec.configure do |rspec_cfg|
  Puppet::Util::Log.level = :debug
  Puppet::Util::Log.newdestination(:console)
  rspec_cfg.before :each do |x|
    rspec_cfg.module_path  = File.join(specdir, '..', '..', 'modules')
    rspec_cfg.manifest_dir = File.join(specdir, 'spec', 'manifests')
  end
end

>>> ./modules/example/manifests/init.pp

class example {
  notify { 'foo': message => hiera('foo_message') }
}

----------------------------


➜  example rspec -r $PWD/spec/spec_helper.rb

*** Mocha deprecation warning: Change `require 'mocha'` to `require 'mocha/setup'`.


*** Mocha deprecation warning: Test::Unit or MiniTest must be loaded *before* Mocha.


*** Mocha deprecation warning: If you're integrating with a test library other than Test::Unit or MiniTest, you should use `require 'mocha/api'` instead of `require 'mocha'`.

Warning: Could not retrieve fact ipaddress
Debug: importing '/home/sroegner/Code/puppet/testing/modules/example/spec/manifests/site.pp' in environment production
Debug: importing '/home/sroegner/Code/puppet/testing/modules/example/manifests/init.pp' in environment production
Debug: Automatically imported example from example into production
SELF:   Scope(Class[Example]) key: foo_message, default: 
Debug: hiera(): Hiera YAML backend starting
Debug: hiera(): Looking up foo_message in YAML backend
Debug: hiera(): Looking for data source common
Debug: hiera(): Cannot find datafile /var/lib/hiera/common.yaml, skipping
Error: Could not find data item foo_message in any Hiera data file and no default supplied at /home/sroegner/Code/puppet/testing/modules/example/manifests/init.pp:2 on node xsr
F

Failures:

  1) example 
     Failure/Error: it { should contain_notify("foo").with_message("bar") }
     Puppet::Error:
       Could not find data item foo_message in any Hiera data file and no default supplied at /home/sroegner/Code/puppet/testing/modules/example/manifests/init.pp:2 on node xsr
     # ./spec/classes/example_spec.rb:4:in `block (2 levels) in <top (required)>'

Finished in 0.10883 seconds
1 example, 1 failure

Failed examples:

rspec ./spec/classes/example_spec.rb:4 # example 

I'd be interested in knowing the same