Capybara/Selenium Fix for Rubymine Debugging w/ Ruby 2.3+

override_driver.rb

# This OverrideDriver class is used to override the +open_timeout+ property Selenium's default HTTP driver.
# This is necessary to support debugging in Rubymine because when the process is stopped on the breakpoint,
# any new threads are not scheduled.
# This is an issue in Ruby 2.3+ because the Net::HTTP#initialize method now defaults the open_timeout property
# to 60 (seconds), as opposed to 0 previously. A non-zero/nil value executes the connection in a new thread 
# (see +Net::HTTP#connect+).
# === Change Notes
#
# * Setting timeout directly does not work, the read_timeout period needs to remain at its current setting. 
#   A setting of 0 prevented pages from opening successfully. 
#
# == Related
# https://youtrack.jetbrains.com/issue/RUBY-18301 - RM issue identifying root cause.
# https://github.com/ruby/ruby/blob/v2_3_0/NEWS#L297 - Change to Net::HTTP#open_timeout default.
#
class OverrideDriver < Selenium::WebDriver::Remote::Http::Default
  def http
    client = super
    client.open_timeout = 0
    client
  end
end

rails_helper.rb

# Unrelated content excluded for brevity.

# Enables Capybara debugging for  Ruby 2.3 to fix 
Capybara.register_driver :selenium_config do |app|
  # @type [Selenium::WebDriver::Remote::Http::Default] client
  client = OverrideDriver.new
  # noinspection RubyArgCount
  Capybara::Selenium::Driver.new(app, {http_client: client})
end
# Changing javascript_driver is required as the default driver is overriden when js: true.
Capybara.javascript_driver = :selenium_config

Thank you for this!

For those using Watir:

browser = Watir::Browser.new(:chrome, http_client: OverrideDriver.new)