List all the declared packages in chef

I'm working on a infrastructure where some servers don't have access to the internet, so I have to push the packages to the local repo before declaring them to be installed on Chef.

However we've been on a situation where Chef failed to install a package since the package wasn't there on some boxes and it has been successful on some other boxes.

What I want to do is to run a Ruby/RSpec test before applying Chef config on the nodes to make sure the packages declared on the recipes do actually exist on the repo.

In order to do that I need to be able to list all the packages exists in the our recipes.

My question is: Is there anyway to list all the declared packages in Chef? I had a quick look at Chef::Platform and ChefSpec but unfortunately couldn't find anything useful to my problem.

Do you have any idea where is the best place to look at?

Solution

If you use ChefSpec you can find all the packages by calling chef_run.find_resources(:package) inside some test. See the source code. Like this:

require 'chefspec'

describe 'example::default' do
  let(:chef_run) { ChefSpec::Runner.new.converge(described_recipe) }

  it 'does something' do
    chef_run.find_resources(:package)...
  end
end