Initialize ': rack-test requires a rack application, but none have been given (ArgumentError)

Question

I keep getting this error when switching from Selenium to PhantomJs/Poltergeist. Does anyone know what I'm doing wrong? If I turn off the driver for selenium, the script works fine. Whenever I comment default_driver = :seleniumand replace with javascript_driver = :poltergeist, I come across this error.

initialize': rack-test requires a rack application, but none was given (ArgumentError)

This is all in a ruby ​​file, without rails.

require 'rubygems'
require 'capybara'
require 'capybara/dsl'
require "open-uri"
# require "date"
# require 'active_support/core_ext/integer/inflections'
require 'capybara/poltergeist'
# require 'selenium-webdriver'
require 'pry'
require 'phantomjs'
# require 'database_cleaner'

Capybara.run_server = false
Capybara.javascript_driver = :poltergeist
# Capybara.default_driver = :selenium
Capybara.app_host = 'https://www.sameplsite.com'


module MyCapybaraTest
  class Test
    include Capybara::DSL

    def login_site
        visit('https://www.sameplsite.com')
        # binding.pry
        click_link('Log in')
        fill_in('email', :with => '[e-mail]')
        fill_in('password', :with => 'passwordpassword')
        check('checkbox_remember')
        click_button('Log in')
    end

    def click_right_game
        click_link('Create Contest')
        all('.boxed')[1].click
        check('Free practice')
        click_link('Create 1 Head-to-Head')
        save_and_open_page
    end

    def output_game_link
        url = URI.parse(current_url)
        puts url
    end

  end
end


t = MyCapybaraTest::Test.new
t.login_fanduel
t.click_right_game
t.output_game_link

Answer 1

Capybara.javascript_driver = :poltergeistdoes not switch the driver. If you want to switch the driver, use instead Capybara.current_driver. It says:Capybara.current_driver = :poltergeist