RSpec shared context to allow testing of Active Job objects with GlobalID-compatible doubles.

global_id.rb

RSpec.shared_context 'Global ID', :global_id do
  def global_id_instance_double(doubled_class, stubs={})
    instance_double(doubled_class, stubs)
      .extend(GlobalID::Identification)
      .tap { |double|
        unless double.respond_to?(:id)
          allow(double).to receive(:id).and_return(double.object_id)
        end
      }
  end

  before do
    allow(GlobalID).to receive(:app).and_return('example') unless GlobalID.app
  end
end

Thanks for the Gist ! Works perfect to make those ActiveJob jobs works with RSpec doubles.

Saved in spec/support/global_id_context.rb, I added to that file (following https://www.relishapp.com/rspec/rspec-core/docs/example-groups/shared-context)

RSpec.configure do |rspec|
  rspec.include_context 'Global ID', include_shared: true
end

And call it from other tests with (using RSpec 3.5)

describe 'Foo' do 
  include_context 'Global ID'
  let(:collaborator_with_globalID) { global_id_instance_double(CollaboratorClass) } 
end