determine_default_connection

# File actioncable/lib/action_cable/connection/test_case.rb, line 166
          def determine_default_connection(name)
            connection = determine_constant_from_test_name(name) do |constant|
              Class === constant && constant < ActionCable::Connection::Base
            end
            raise NonInferrableConnectionError.new(name) if connection.nil?
            connection
          end