determine_default_channel

# File actioncable/lib/action_cable/channel/test_case.rb, line 227
          def determine_default_channel(name)
            channel = determine_constant_from_test_name(name) do |constant|
              Class === constant && constant < ActionCable::Channel::Base
            end
            raise NonInferrableChannelError.new(name) if channel.nil?
            channel
          end