Testing if a module or class is faster when only using one method. requires gem 'benchmark-ips' from https://github.com/evanphx/benchmark-ips

speed_test_two_fer.rb

require 'benchmark/ips'

# test for modules
module TwoFer
  # Takes name or no name and returns statement
  def self.two_fer(name = 'you')
    "One for #{name}, one for me."
  end
end

class TwoFerC
  def self.two_fer(name = 'you')
    "One for #{name}, one for me."
  end
end

Benchmark.ips do |x|
  x.config(time: 5, warmup: 2)
  x.report('Module:        ') { TwoFer.two_fer('TestName') }
  x.report('Class:         ') { TwoFerC.two_fer('TestName') }
  x.report('Module No Name:') { TwoFer.two_fer }
  x.report('Class No Name:') { TwoFerC.two_fer }
end