capybara

spec_helper.rb

require 'capybara/rspec'
require 'capybara/mechanize'

Capybara.configure do |c|
  c.app = 'avoid "mechanize requires a rack application" error'
  c.default_driver = :mechanize
  c.app_host = 'http://www.bing.com'
  # if you use proxy set the following
  # Capybara.current_session.driver.browser.agent.set_proxy('proxy.host', 'proxy.port')
end

RSpec.configure do |c|
  c.include Capybara::DSL
end

visit_top_page_spec.rb

require 'spec_helper'

describe 'top page' do
  before do
    visit '/'
  end

  it 'shows gundam' do
    find_field('sb_form_q').set('ガンダム')
    click_button('sb_form_go')
    expect(page).to have_content 'gundam'
  end
end