gem resource :chef symbol isn't valid on Windows

[kpersohn]

Description

On Windows platforms, :chef does not resolve to the correct gem_binary location causing InSpec to fail to find gems installed to Chef Omnibus embedded Ruby.

InSpec and Platform Version

1.19.1
Windows 7 x64

Replication Case

  describe gem('chef-vault', :chef) do
    it { should be_installed }
  end

fails; however this works:

  describe gem('chef-vault', 'C:\opscode\chef\embedded\bin\gem.cmd') do
    it { should be_installed }
  end

Possible Solutions

Perhaps https://github.com/chef/inspec/blob/master/lib/resources/gem.rb#L26 just needs .cmd appended?

@nvwls Thoughts?

[adamleff]

@kpersohn thanks for submitting this issue! I've put forth #1650 to fix this.