[chef] Re: Mocking out a class in Chefspec

[Xabier de Zuazo < >]

On Wed, Nov 12, 2014 at 02:03:13PM -0800, 

 
 wrote:
> Hi, we're trying to mock out citadel in chefspec but aren't getting 
> anywhere.
> Here's what we have so in our spec file:
> 
> before do
>     require File.join(RSpec.configuration.cookbook_path, '/',
> 'citadel/libraries/default.rb')
>     allow_any_instance_of(Citadel).to
> receive(:[]).with('development/celery__result_db_username').and_return('fakeusername')
>     allow_any_instance_of(Citadel).to
> receive(:[]).with('development/celery__result_db_password').and_return('fakepassword')
>   end
> 
> This seems to import citadel, but then the mocks are never called.

That's because when you run ChefSpec::*Runner#converge all the chef libraries/
classes are loaded again and the Citadel mocks are overridden. I mean,
#chef_run reloads all the cookbook library directories.

I do not know a simple solution.

Maybe you could create a mockable Citadel subclass of your library class and
mock it.

Something like:

class MyLibraryClass
  class Citadel << ::Citadel
  end
end

describe MyLibraryClass do
  before do
    allow_any_instance_of(::MyLibraryClass::Citadel) ...
  end
end

This is assuming you're using a class. If you are calling Citadel from a 
Recipe,
you could try creating a Citadel subclass of the Recipe class:

class Chef::Recipe
  class Citadel << ::Citadel
  end
end

The same for providers.

I have not tried any of this but it might work.

-- 
Xabier de Zuazo

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