fluke/devops-service/spec/shared_contexts/with_tester_connector.rb

def set_tester_connector(klass)
  define_method :tester_connector_class do
    klass
  end
  include_context 'with tester connector'
end

RSpec.shared_context 'with tester connector' do
  before(:all) do
    @connector = described_class.new(SpecSupport.db)
    @tester_connector = tester_connector_class.new
    @tester_connector.cleanup
  end
  after(:all){ @tester_connector.cleanup }
end

RSpec.shared_context 'cleanup after all', cleanup_after: :all do
  after(:all){ @tester_connector.cleanup }
end

RSpec.shared_context 'cleanup after each', cleanup_after: :each do
  after { @tester_connector.cleanup }
end