You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: session_adapter_test.rb
    path of file: ./repos/iruby/test/iruby
    
    the code of the file until where you have to start completion: module IRubyTest
  class SessionAdapterTest <
    
    def test_select_adapter_class_with_cztop
      assert_rr do
        stub(IRuby::SessionAdapter::CztopAdapter).available? { true }
        stub(IRuby::SessionAdapter::FfirzmqAdapter).available? { false }

        cls = IRuby::SessionAdapter.select_adapter_class
        assert_equal IRuby::SessionAdapter::CztopAdapter, cls
      end
    end