debug_rails_rspec_capybara_test.rb

# frozen_string_literal: true

require "bundler/inline"

gemfile(true) do
  source "https://rubygems.org"

  git_source(:github) { |repo| "https://github.com/#{repo}.git" }

  gem "rails", "~> 6.1.4"
  gem "debug"
  gem "puma"
  gem "capybara"
  gem "webdrivers"
  gem "rspec-rails"
end

## Test rails controller

require "rails"
require "action_controller/railtie"

class TestApp < Rails::Application
  config.root = __dir__
  config.hosts << "example.org"
  secrets.secret_key_base = "secret_key_base"

  config.logger = Logger.new($stdout)
  Rails.logger  = config.logger

  routes.draw do
    get "/" => "test#index"
    get "/something" => "test#something"
  end
end

class TestController < ActionController::Base
  include Rails.application.routes.url_helpers

  def index
    render plain: "Hello Home"
  end

  def something
    render plain: "Hello Something"
  end
end


## Test spec - RSpec + capybara 

require "rspec/rails"
require "rspec/autorun"

RSpec.configure do |config|
  config.use_transactional_fixtures = true
  config.use_active_record = false
  config.render_views
end

require "capybara"
require "debug"

Capybara.register_driver :selenium do |app|
  Capybara::Selenium::Driver.new(app, browser: :chrome)
end
Capybara.server_host = "0.0.0.0"
Capybara.server_port = 3002
Capybara.server = :puma
Capybara.javascript_driver = :selenium

RSpec.describe "BugTest", type: :system do
  it "visit /" do
    visit "/"

    expect(page).to have_content("Hello Home")
  end

  it "visit /something" do
    visit "/something"

    expect(page).to have_content("Hello Something")
  end
end

But unfortunately you cannot call debugger in the test case and istruct Capybara to do stuff (visit '/test') from there :( - works with pry.