[chef] Serverspec 2.0 release

[< >]

Most of you probably didn't know serverspec released a 2.0.0 today[1]. You 
also
might not have noticed but this likely breaks your test kitchen runs with
something like this,
 
   /tmp/busser/suites/serverspec/spec_helper.rb:4:in `<top (required)>':
uninitialized constant Serverspec::Helper::Exec (NameError)
       ...
 
From Serverspec,

   spec_helper.rb incompatible
   spec_helper.rb does not have backward compatibility. So you should
re-generate spec_helper.rb by serverspec-init and check it.

   Backend helper and DetectOS helper have been removed
   In version 1, you need to include SpecInfra::Helper::backend_type
SpecInfra::Helper::DetectOS to detect the os of target hosts like this.

   require 'serverspec'
   include SpecInfra::Helper::Ssh
   include SpecInfra::Helper::DetectOS
 
Test-Kitchen by default will install the latest version of serverspec.
Thankfully upgrading is pretty easy. You can do the whole serverspec-init if
you want but my helper looks like this,
 
   require 'serverspec'

   # Required by serverspec
   set :backend, :exec
 
[1] - http://rubygems.org/gems/serverspec/versions/2.0.0