Write initial unit tests

spec/fixtures/Puppetfile

@@ -0,0 +1,20 @@
+mod 'puppetlabs/apache', :latest
+
+mod 'puppetlabs-apt'
+
+mod 'puppetlabs/stdlib', '4.11.0'
+
+mod 'vcsrepo',
+    git: 'https://github.com/puppetlabs/puppetlabs-vcsrepo.git',
+    tag: '1.3.2'
+
+mod 'concat',
+    git: 'https://github.com/puppetlabs/puppetlabs-concat.git',
+    branch: 'master'
+
+mod 'firewall',
+    git: 'https://github.com/puppetlabs/puppetlabs-firewall',
+    ref: '71c659faf38d5e0cf19cfc16bb690b4c450fbd2a'
+
+mod 'inifile',
+    git: 'https://github.com/puppetlabs/puppetlabs-inifile.git'

spec/puppetfile_fixtures_generator_spec.rb

@@ -5,8 +5,6 @@
     expect(PuppetfileFixturesGenerator::VERSION).not_to be nil
   end
 
-  it 'does something useful' do
-    pending('no code yet')
-    fail
+  describe '#create_fixtures' do
   end
 end

spec/spec_helper.rb

@@ -1,7 +1,20 @@
-$LOAD_PATH.unshift File.expand_path('../../lib', __FILE__)
-
 require 'coveralls'
-Coveralls.wear!
+require 'simplecov'
+SimpleCov.formatter = SimpleCov::Formatter::MultiFormatter.new(
+  [SimpleCov::Formatter::HTMLFormatter,
+   Coveralls::SimpleCov::Formatter]
+)
+SimpleCov.start do
+  add_filter 'spec'
+end
+
+$LOAD_PATH.unshift File.expand_path('../../lib', __FILE__)
 
 require 'pry'
 require 'puppetfile_fixtures_generator'
+
+RSpec.configure do |config|
+  config.expect_with :rspec do |c|
+    c.syntax = :expect
+  end
+end