require 'rails_helper'
RSpec.describe "Homepages", type: :request do
  describe "GET / without login" , js: true do
    before(:all) do
      Capybara.javascript_driver = :webkit
       Employee.create(username: "username", password: "12345", password_confirmation: "12345")
    end
    it "works!" do
      visit root_path
      fill_in "loginname", with: "username"
      fill_in "password", with: "12345"
      click_button('sign_in')
    end
  end
end

1.1) Failure/Error:
        def initialize(template, original_exception)
          super(original_exception.message)
          @template, @original_exception = template, original_exception
          @sub_templates = nil
          set_backtrace(original_exception.backtrace)
        end

      ArgumentError:
        wrong number of arguments (1 for 2)

     #/.rvm/gems/ruby-2.1.1/gems/actionview-4.2.7/lib/action_view/template/error.rb:64:in `initialize'
     # /.rvm/gems/ruby-2.1.1/gems/capybara-2.10.1/lib/capybara/session.rb:128:in `exception'
     # /.rvm/gems/ruby-2.1.1/gems/capybara-2.10.1/lib/capybara/session.rb:128:in `raise'
     # /.rvm/gems/ruby-2.1.1/gems/capybara-2.10.1/lib/capybara/session.rb:128:in `rescue in raise_server_error!'
     # /.rvm/gems/ruby-2.1.1/gems/capybara-2.10.1/lib/capybara/session.rb:125:in `raise_server_error!'
     # /.rvm/gems/ruby-2.1.1/gems/capybara-2.10.1/lib/capybara/session.rb:113:in `reset!'
     # /.rvm/gems/ruby-2.1.1/gems/capybara-2.10.1/lib/capybara.rb:334:in `block in reset_sessions!'
     # /.rvm/gems/ruby-2.1.1/gems/capybara-2.10.1/lib/capybara.rb:334:in `reverse_each'
     # /.rvm/gems/ruby-2.1.1/gems/capybara-2.10.1/lib/capybara.rb:334:in `reset_sessions!'
     # /.rvm/gems/ruby-2.1.1/gems/capybara-2.10.1/lib/capybara/rspec.rb:21:in `block (2 levels) in <top (required)>'
     # ------------------
     # --- Caused by: ---
     # Capybara::CapybaraError:
     #   Your application server raised an error - It has been raised in your test code because Capybara.raise_server_errors == true
     # /.rvm/gems/ruby-2.1.1/gems/capybara-2.10.1/lib/capybara/session.rb:126:in `raise_server_error!'