Gemfile

source "https://rubygems.org"

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

gem "rails", github: "rails/rails", branch: "main"
gem "capybara"
gem "selenium-webdriver"
gem "selenium"
gem "pry"
gem "rack", "2.2.4"
gem "puma", "~> 5.0"

Gemfile.lock

GIT
  remote: https://github.com/rails/rails.git
  revision: 655278edeb82ec5f081313abf9c9f59c8be76b22
  branch: main
  specs:
    actioncable (7.1.0.alpha)
      actionpack (= 7.1.0.alpha)
      activesupport (= 7.1.0.alpha)
      nio4r (~> 2.0)
      websocket-driver (>= 0.6.1)
      zeitwerk (~> 2.6)
    actionmailbox (7.1.0.alpha)
      actionpack (= 7.1.0.alpha)
      activejob (= 7.1.0.alpha)
      activerecord (= 7.1.0.alpha)
      activestorage (= 7.1.0.alpha)
      activesupport (= 7.1.0.alpha)
      mail (>= 2.7.1)
      net-imap
      net-pop
      net-smtp
    actionmailer (7.1.0.alpha)
      actionpack (= 7.1.0.alpha)
      actionview (= 7.1.0.alpha)
      activejob (= 7.1.0.alpha)
      activesupport (= 7.1.0.alpha)
      mail (~> 2.5, >= 2.5.4)
      net-imap
      net-pop
      net-smtp
      rails-dom-testing (~> 2.0)
    actionpack (7.1.0.alpha)
      actionview (= 7.1.0.alpha)
      activesupport (= 7.1.0.alpha)
      nokogiri (>= 1.8.5)
      rack (>= 2.2.4)
      rack-session (>= 1.0.1)
      rack-test (>= 0.6.3)
      rails-dom-testing (~> 2.0)
      rails-html-sanitizer (~> 1.6)
    actiontext (7.1.0.alpha)
      actionpack (= 7.1.0.alpha)
      activerecord (= 7.1.0.alpha)
      activestorage (= 7.1.0.alpha)
      activesupport (= 7.1.0.alpha)
      globalid (>= 0.6.0)
      nokogiri (>= 1.8.5)
    actionview (7.1.0.alpha)
      activesupport (= 7.1.0.alpha)
      builder (~> 3.1)
      erubi (~> 1.11)
      rails-dom-testing (~> 2.0)
      rails-html-sanitizer (~> 1.6)
    activejob (7.1.0.alpha)
      activesupport (= 7.1.0.alpha)
      globalid (>= 0.3.6)
    activemodel (7.1.0.alpha)
      activesupport (= 7.1.0.alpha)
    activerecord (7.1.0.alpha)
      activemodel (= 7.1.0.alpha)
      activesupport (= 7.1.0.alpha)
    activestorage (7.1.0.alpha)
      actionpack (= 7.1.0.alpha)
      activejob (= 7.1.0.alpha)
      activerecord (= 7.1.0.alpha)
      activesupport (= 7.1.0.alpha)
      marcel (~> 1.0)
    activesupport (7.1.0.alpha)
      concurrent-ruby (~> 1.0, >= 1.0.2)
      connection_pool (>= 2.2.5)
      i18n (>= 1.6, < 2)
      minitest (>= 5.1)
      tzinfo (~> 2.0)
    rails (7.1.0.alpha)
      actioncable (= 7.1.0.alpha)
      actionmailbox (= 7.1.0.alpha)
      actionmailer (= 7.1.0.alpha)
      actionpack (= 7.1.0.alpha)
      actiontext (= 7.1.0.alpha)
      actionview (= 7.1.0.alpha)
      activejob (= 7.1.0.alpha)
      activemodel (= 7.1.0.alpha)
      activerecord (= 7.1.0.alpha)
      activestorage (= 7.1.0.alpha)
      activesupport (= 7.1.0.alpha)
      bundler (>= 1.15.0)
      railties (= 7.1.0.alpha)
    railties (7.1.0.alpha)
      actionpack (= 7.1.0.alpha)
      activesupport (= 7.1.0.alpha)
      irb
      rackup (>= 1.0.0)
      rake (>= 12.2)
      thor (~> 1.0, >= 1.2.2)
      zeitwerk (~> 2.6)

GEM
  remote: https://rubygems.org/
  specs:
    addressable (2.8.4)
      public_suffix (>= 2.0.2, < 6.0)
    builder (3.2.4)
    capybara (3.39.1)
      addressable
      matrix
      mini_mime (>= 0.1.3)
      nokogiri (~> 1.8)
      rack (>= 1.6.0)
      rack-test (>= 0.6.3)
      regexp_parser (>= 1.5, < 3.0)
      xpath (~> 3.2)
    coderay (1.1.3)
    concurrent-ruby (1.2.2)
    connection_pool (2.4.1)
    crass (1.0.6)
    date (3.3.3)
    erubi (1.12.0)
    globalid (1.1.0)
      activesupport (>= 5.0)
    i18n (1.14.1)
      concurrent-ruby (~> 1.0)
    io-console (0.6.0)
    irb (1.7.0)
      reline (>= 0.3.0)
    jar_wrapper (0.1.8)
      zip
    loofah (2.21.3)
      crass (~> 1.0.2)
      nokogiri (>= 1.12.0)
    mail (2.8.1)
      mini_mime (>= 0.1.1)
      net-imap
      net-pop
      net-smtp
    marcel (1.0.2)
    matrix (0.4.2)
    method_source (1.0.0)
    mini_mime (1.1.2)
    minitest (5.18.0)
    net-imap (0.3.4)
      date
      net-protocol
    net-pop (0.1.2)
      net-protocol
    net-protocol (0.2.1)
      timeout
    net-smtp (0.3.3)
      net-protocol
    nio4r (2.5.9)
    nokogiri (1.15.2-x86_64-linux)
      racc (~> 1.4)
    pry (0.14.2)
      coderay (~> 1.1)
      method_source (~> 1.0)
    public_suffix (5.0.1)
    puma (5.6.5)
      nio4r (~> 2.0)
    racc (1.6.2)
    rack (2.2.4)
    rack-session (1.0.1)
      rack (< 3)
    rack-test (2.1.0)
      rack (>= 1.3)
    rackup (1.0.0)
      rack (< 3)
      webrick
    rails-dom-testing (2.0.3)
      activesupport (>= 4.2.0)
      nokogiri (>= 1.6)
    rails-html-sanitizer (1.6.0)
      loofah (~> 2.21)
      nokogiri (~> 1.14)
    rake (13.0.6)
    regexp_parser (2.8.0)
    reline (0.3.5)
      io-console (~> 0.5)
    rexml (3.2.5)
    rubyzip (2.3.2)
    selenium (0.2.11)
      jar_wrapper
    selenium-webdriver (4.9.1)
      rexml (~> 3.2, >= 3.2.5)
      rubyzip (>= 1.2.2, < 3.0)
      websocket (~> 1.0)
    thor (1.2.2)
    timeout (0.3.2)
    tzinfo (2.0.6)
      concurrent-ruby (~> 1.0)
    webrick (1.8.1)
    websocket (1.2.9)
    websocket-driver (0.7.5)
      websocket-extensions (>= 0.1.0)
    websocket-extensions (0.1.5)
    xpath (3.2.0)
      nokogiri (~> 1.8)
    zeitwerk (2.6.8)
    zip (2.0.2)

PLATFORMS
  x86_64-linux

DEPENDENCIES
  capybara
  pry
  puma (~> 5.0)
  rack (= 2.2.4)
  rails!
  selenium
  selenium-webdriver

BUNDLED WITH
   2.3.7

turbo_rails_reload_repro.rb

# frozen_string_literal: true

require "rails/all"
require "minitest/autorun"
require "capybara"
require "pry"

class TestApp < Rails::Application
  config.root = __dir__
  config.hosts << "example.org"
  secrets.secret_key_base = "secret_key_base"
  config.consider_all_requests_local = true
  config.logger = Logger.new($stdout)
  Rails.logger  = config.logger


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

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

  def index
    render inline: <<-EOF
<!DOCTYPE html>
<html>
  <head>
    <title>TestApp</title>
    <meta name="viewport" content="width=device-width,initial-scale=1">
    <%= javascript_tag type: :module do %>
        import "https://cdn.skypack.dev/@hotwired/turbo@#{params[:turbo_version]}"
    <% end %>
  </head>
      <turbo-frame id="unique-id" src="/page?turbo_version=#{params[:turbo_version]}">
         Loading...
      </turbo-frame>
  <body>
  </body>
</html>
    EOF
  end

  def other_page
    raise StandardError.new
    render inline: <<-EOF
<!DOCTYPE html>
<html>
  <head>
    <title>TestApp</title>
    <meta name="viewport" content="width=device-width,initial-scale=1">
    <%= javascript_tag type: :module do %>
    import "https://cdn.skypack.dev/@hotwired/turbo@#{params[:turbo_version]}"
    <% end %>
  </head>
      <turbo-frame id="unique-id">
         Loaded
      </turbo-frame>
  <body>
  </body>
</html>
    EOF
  end
end


Capybara.server = :webrick


class BugTest < ActionDispatch::SystemTestCase
  driven_by :selenium, using: :chrome, screen_size: [1400, 1400]
  def take_failed_screenshot; end

  def test_old_version
    visit "/?turbo_version=7.2.5"
    assert_text "StandardError in TestController#other_page"
    assert_text "Extracted source"
  end

  def test_new_version
    visit "/?turbo_version=7.3.0"
    assert_text "StandardError in TestController#other_page"
    assert_text "Extracted source"
  end
end