gistfile1.txt

# Before https://github.com/rails/rails/commit/4fd144dd4bb0e1ede5a4857c178138088353a3d1 on May 13

Calculating -------------------------------------
    Integration Test        58 i/100ms
     Functional Test        87 i/100ms
-------------------------------------------------
    Integration Test      605.9 (±9.7%) i/s -       3016 in   5.030043s
     Functional Test      877.5 (±11.4%) i/s -       4350 in   5.030839s

# with Turbolinks before/after filter

 Calculating -------------------------------------
    Integration Test        62 i/100ms
     Functional Test        89 i/100ms
-------------------------------------------------
    Integration Test      637.5 (±8.3%) i/s -       3224 in   5.097314s
     Functional Test      886.5 (±5.5%) i/s -       4450 in   5.036131s

# without Turbolinks before/after filters

Calculating -------------------------------------
    Integration Test        71 i/100ms
     Functional Test        90 i/100ms
-------------------------------------------------
    Integration Test      733.7 (±7.5%) i/s -       3692 in   5.063477s
     Functional Test      920.6 (±5.6%) i/s -       4590 in   5.003042s

user_flow_test.rb

require 'test_helper'
require 'benchmark/ips'

class UserFlowTest < ActionDispatch::IntegrationTest
  def test_index
    get "http://www.example.com/users"
    assert_equal 200, response.status
  end
end

class UserFlowTest2 < ActionController::TestCase
  tests UsersController

  def test_index
    get :index
    assert_equal 200, response.status
  end
end

Benchmark.ips(5) do |bm|
  bm.report 'Integration Test' do
    Minitest.run_one_method(UserFlowTest, 'test_index')
  end

  bm.report 'Functional Test' do
    Minitest.run_one_method(UserFlowTest2, 'test_index')
  end
end

users_controller.rb

class UsersController < ApplicationController
  before_action :set_user, only: [:show, :edit, :update, :destroy]

  # GET /users
  # GET /users.json
  def index
    render plain: 'ok'
  end
end