implement `refresh`

lib/capybara/driver/base.rb

@@ -10,6 +10,10 @@ class Capybara::Driver::Base
     raise NotImplementedError
   end
 
+  def refresh
+    raise NotImplementedError
+  end
+
   def find_xpath(query)
     raise NotImplementedError
   end

lib/capybara/rack_test/browser.rb

@@ -22,6 +22,11 @@ class Capybara::RackTest::Browser
     process_and_follow_redirects(:get, path, attributes)
   end
 
+  def refresh
+    reset_cache!
+    request(last_request.fullpath, last_request.env)
+  end
+
   def submit(method, path, attributes)
     path = request_path if not path or path.empty?
     process_and_follow_redirects(method, path, attributes, {'HTTP_REFERER' => current_url})

lib/capybara/rack_test/driver.rb

@@ -44,6 +44,10 @@ class Capybara::RackTest::Driver < Capybara::Driver::Base
     browser.visit(path, attributes)
   end
 
+  def refresh
+    browser.refresh
+  end
+
   def submit(method, path, attributes)
     browser.submit(method, path, attributes)
   end

lib/capybara/selenium/driver.rb

@@ -67,6 +67,13 @@ class Capybara::Selenium::Driver < Capybara::Driver::Base
     browser.navigate.to(path)
   end
 
+  def refresh
+    accept_modal(wait: 0.1) do
+      browser.navigate.refresh
+    end
+  rescue Capybara::ModalNotFound
+  end
+
   def go_back
     browser.navigate.back
   end

lib/capybara/session.rb

@@ -58,7 +58,7 @@ module Capybara
     ]
     SESSION_METHODS = [
       :body, :html, :source, :current_url, :current_host, :current_path,
-      :execute_script, :evaluate_script, :visit, :go_back, :go_forward,
+      :execute_script, :evaluate_script, :visit, :refresh, :go_back, :go_forward,
       :within, :within_element, :within_fieldset, :within_table, :within_frame, :switch_to_frame,
       :current_window, :windows, :open_new_window, :switch_to_window, :within_window, :window_opened_by,
       :save_page, :save_and_open_page, :save_screenshot,
@@ -269,6 +269,15 @@ module Capybara
       driver.visit(visit_uri.to_s)
     end
 
+    ##
+    #
+    # Refresh the page
+    #
+    def refresh
+      raise_server_error!
+      driver.refresh
+    end
+
     ##
     #
     # Move back a single entry in the browser's history.

lib/capybara/spec/session/refresh_spec.rb

@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+Capybara::SpecHelper.spec '#refresh' do
+  it "reload the page" do
+    @session.visit('/form')
+    expect(@session).to have_select('form_locale', selected: 'English')
+    @session.select('Swedish', from: 'form_locale')
+    expect(@session).to have_select('form_locale', selected: 'Swedish')
+    @session.refresh
+    expect(@session).to have_select('form_locale', selected: 'English')
+  end
+
+  it "raises any errors caught inside the server", requires: [:server] do
+    quietly { @session.visit("/error") }
+    expect do
+      @session.refresh
+    end.to raise_error(TestApp::TestAppError)
+  end
+
+  it "it reposts" do
+    @session.visit('/form')
+    @session.select('Sweden', from: 'form_region')
+    @session.click_button('awesome')
+    expect {
+      @session.refresh
+      sleep 2
+    }.to change{ extract_results(@session)['post_count'] }.by(1)
+  end
+end

lib/capybara/spec/test_app.rb

@@ -17,6 +17,7 @@ class TestApp < Sinatra::Base
   set :raise_errors, true
   set :show_exceptions, false
 
+  @@form_post_count = 0
   # Also check lib/capybara/spec/views/*.erb for pages not listed here
 
   get '/' do
@@ -147,7 +148,8 @@ class TestApp < Sinatra::Base
   end
 
   post '/form' do
-    '<pre id="results">' + params[:form].to_yaml + '</pre>'
+    @@form_post_count += 1
+    '<pre id="results">' + params[:form].merge({"post_count" => @@form_post_count}).to_yaml + '</pre>'
   end
 
   post '/upload_empty' do