added test for correct dependency loading

spec/unit/s3_source_deps_spec.rb

@@ -0,0 +1,21 @@
+require File.expand_path('../../spec_helper', __FILE__)
+
+describe 'Check Dependencies' do
+ before(:each) do
+ end
+ it 'should not load fog by default' do
+ begin
+ Fog::Storage::AWS.new()
+ rescue Exception => e
+ expect(e).to be_a_kind_of(NameError)
+ end
+ end
+
+ it 'lazy loads fog' do
+ begin
+ Chef::Knife::S3Source.fetch('test')
+ rescue Exception => e
+ expect(e).to be_a_kind_of(ArgumentError)
+ end
+ end
+end