diff --git a/.travis.yml b/.travis.yml
index a5fec1a71..430d7fbb2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,13 @@ cache: bundler
 env:
   - DB=postgresql
 bundler_args: --without development staging production
+before_install:
+  - "wget -N http://chromedriver.storage.googleapis.com/2.40/chromedriver_linux64.zip -P ~/"
+  - "unzip ~/chromedriver_linux64.zip -d ~/"
+  - "rm ~/chromedriver_linux64.zip"
+  - "sudo mv -f ~/chromedriver /usr/local/share/"
+  - "sudo chmod +x /usr/local/share/chromedriver"
+  - "sudo ln -s /usr/local/share/chromedriver /usr/local/bin/chromedriver"
 before_script:
   - "cp config/application-example.yml config/application.yml"
   - "cp config/database-travis.yml config/database.yml"
@@ -19,3 +26,4 @@ services:
   - postgresql
 addons:
   postgresql: "9.4"
+  chrome: stable
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 838ff6ea4..ecefbb279 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+12.07.2018
+* Implemented JavaScript testing framework to catch web UI problems [#900](https://github.com/internetee/registry/issues/900)
+
 10.07.2018
 * Nameserver bulk change returns list of affected doamins [#835](https://github.com/internetee/registry/issues/835)
 
diff --git a/Gemfile b/Gemfile
index 7682cdc4e..e1c3858ba 100644
--- a/Gemfile
+++ b/Gemfile
@@ -104,14 +104,13 @@ gem 'active_model-errors_details' # Backport from Rails 5, https://github.com/ra
 group :development do
   # deploy
   gem 'mina', '0.3.1' # for fast deployment
-  gem 'puma'
 end
 
 group :development, :test do
   gem 'factory_bot_rails'
   gem 'capybara'
   gem 'rspec-rails', '~> 3.6'
-  gem 'poltergeist'
+  gem 'selenium-webdriver'
 
   # debug
   gem 'pry', '0.10.1'
@@ -121,6 +120,7 @@ group :development, :test do
   gem 'sdoc',          '0.4.1'  # bundle exec rake doc:rails generates the API under doc/api.
   gem 'railroady',     '1.3.0'  # to generate database diagrams
   gem 'autodoc'
+  gem 'puma'
 end
 
 group :staging do
diff --git a/Gemfile.lock b/Gemfile.lock
index 9a88e782b..9d9f99da9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -99,8 +99,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.5.1)
-      public_suffix (~> 2.0, >= 2.0.2)
+    addressable (2.5.2)
+      public_suffix (>= 2.0.2, < 4.0)
     airbrake (6.0.0)
       airbrake-ruby (~> 2.0)
     airbrake-ruby (2.0.0)
@@ -134,8 +134,9 @@ GEM
       rack (>= 1.0.0)
       rack-test (>= 0.5.4)
       xpath (~> 2.0)
+    childprocess (0.9.0)
+      ffi (~> 1.0, >= 1.0.11)
     chronic (0.10.2)
-    cliver (0.3.2)
     coderay (1.1.0)
     coercible (1.0.0)
       descendants_tracker (~> 0.0.1)
@@ -180,6 +181,7 @@ GEM
     factory_bot_rails (4.8.2)
       factory_bot (~> 4.8.2)
       railties (>= 3.0.0)
+    ffi (1.9.25)
     figaro (1.1.1)
       thor (~> 0.14)
     globalid (0.4.1)
@@ -204,7 +206,7 @@ GEM
       haml (>= 4.0.6, < 5.0)
       html2haml (>= 1.0.1)
       railties (>= 4.0.1)
-    hashdiff (0.3.4)
+    hashdiff (0.3.7)
     hashie (3.5.5)
     hashie-forbidden_attributes (0.1.1)
       hashie (>= 3.0)
@@ -276,17 +278,13 @@ GEM
     orm_adapter (0.5.0)
     pdfkit (0.6.2)
     pg (0.19.0)
-    poltergeist (1.14.0)
-      capybara (~> 2.1)
-      cliver (~> 0.3.1)
-      websocket-driver (>= 0.2.0)
     polyamorous (1.3.1)
       activerecord (>= 3.0)
     pry (0.10.1)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    public_suffix (2.0.5)
+    public_suffix (3.0.2)
     puma (3.8.2)
     que (0.10.0)
     que-web (0.4.0)
@@ -368,6 +366,7 @@ GEM
     rspec-support (3.6.0)
     ruby_parser (3.8.4)
       sexp_processor (~> 4.1)
+    rubyzip (1.2.1)
     safe_yaml (1.0.4)
     sass (3.4.23)
     sass-rails (5.0.6)
@@ -390,6 +389,9 @@ GEM
     select2-rails (3.5.9.3)
       thor (~> 0.14)
     selectize-rails (0.12.1)
+    selenium-webdriver (3.13.0)
+      childprocess (~> 0.5)
+      rubyzip (~> 1.2)
     sexp_processor (4.8.0)
     simplecov (0.15.1)
       docile (~> 1.1.0)
@@ -436,13 +438,10 @@ GEM
     wasabi (3.5.0)
       httpi (~> 2.0)
       nokogiri (>= 1.4.2)
-    webmock (3.0.1)
+    webmock (3.4.2)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff
-    websocket-driver (0.6.5)
-      websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.2)
     whenever (0.9.4)
       chronic (>= 0.6.3)
     xpath (2.0.0)
@@ -491,7 +490,6 @@ DEPENDENCIES
   paper_trail!
   pdfkit (= 0.6.2)
   pg (= 0.19.0)
-  poltergeist
   pry (= 0.10.1)
   puma
   que (= 0.10.0)
@@ -507,6 +505,7 @@ DEPENDENCIES
   sdoc (= 0.4.1)
   select2-rails (= 3.5.9.3)
   selectize-rails (= 0.12.1)
+  selenium-webdriver
   simplecov
   simpleidn (= 0.0.7)
   uglifier
diff --git a/spec/features/registrar/sign_in/mobile_id_spec.rb b/spec/features/registrar/sign_in/mobile_id_spec.rb
deleted file mode 100644
index 35c0cc18e..000000000
--- a/spec/features/registrar/sign_in/mobile_id_spec.rb
+++ /dev/null
@@ -1,20 +0,0 @@
-require 'rails_helper'
-
-RSpec.feature 'Mobile ID login', db: true do
-  given!(:api_user) { create(:api_user, identity_code: 1234) }
-
-  background do
-    digidoc_client = instance_double(Digidoc::Client, authenticate: OpenStruct.new(user_id_code: 1234), session_code: 1234)
-    allow(Digidoc::Client).to receive(:new).and_return(digidoc_client)
-  end
-
-  scenario 'login with phone number' do
-    visit new_registrar_user_session_url
-    click_on 'login-with-mobile-id-btn'
-
-    fill_in 'user[phone]', with: '1234'
-    click_button 'Login'
-
-    expect(page).to have_text('Confirmation sms was sent to your phone. Verification code is')
-  end
-end
diff --git a/spec/rails_helper.rb b/spec/rails_helper.rb
index c6110a8c2..aead0dfa5 100644
--- a/spec/rails_helper.rb
+++ b/spec/rails_helper.rb
@@ -2,7 +2,6 @@ ENV['RAILS_ENV'] ||= 'test'
 require 'spec_helper'
 require File.expand_path('../../config/environment', __FILE__)
 require 'rspec/rails'
-require 'capybara/poltergeist'
 require 'paper_trail/frameworks/rspec'
 require 'money-rails/test_helpers'
 require 'support/requests/session_helpers'
diff --git a/spec/support/capybara.rb b/spec/support/capybara.rb
index 7ef5009c6..5434f1a84 100644
--- a/spec/support/capybara.rb
+++ b/spec/support/capybara.rb
@@ -4,5 +4,3 @@ RSpec.configure do |config|
   config.include CapybaraViewMacros, type: :view
   config.include CapybaraViewMacros, type: :presenter
 end
-
-Capybara.javascript_driver = :poltergeist
diff --git a/test/application_system_test_case.rb b/test/application_system_test_case.rb
new file mode 100644
index 000000000..6c06ef937
--- /dev/null
+++ b/test/application_system_test_case.rb
@@ -0,0 +1,42 @@
+require 'test_helper'
+
+require 'database_cleaner'
+require 'selenium/webdriver'
+
+class ApplicationSystemTestCase < ActionDispatch::IntegrationTest; end
+
+class JavaScriptApplicationSystemTestCase < ApplicationSystemTestCase
+  self.use_transactional_fixtures = false
+  DatabaseCleaner.strategy = :truncation
+
+  Capybara.register_driver(:chrome) do |_app|
+    options = ::Selenium::WebDriver::Chrome::Options.new
+
+    options.add_argument('--headless')
+    options.add_argument('--no-sandbox')
+    options.add_argument('--disable-dev-shm-usage')
+    options.add_argument('--window-size=1400,1400')
+
+    Capybara::Selenium::Driver.new(Rails.application, browser: :chrome, options: options)
+  end
+
+  Capybara.register_server(:silent_puma) do |app, port, _host|
+    require 'rack/handler/puma'
+    Rack::Handler::Puma.run(app, Port: port, Threads: '0:2', Silent: true)
+  end
+
+  def setup
+    DatabaseCleaner.start
+
+    super
+
+    Capybara.current_driver = :chrome
+    Capybara.server = :silent_puma
+  end
+
+  def teardown
+    super
+
+    DatabaseCleaner.clean
+  end
+end
diff --git a/test/system/registrar/sign_in_test.rb b/test/system/registrar/sign_in_test.rb
new file mode 100644
index 000000000..9af5522f9
--- /dev/null
+++ b/test/system/registrar/sign_in_test.rb
@@ -0,0 +1,35 @@
+require 'test_helper'
+
+class RegistrarAreaSignInTest < JavaScriptApplicationSystemTestCase
+  def setup
+    super
+    WebMock.allow_net_connect!
+
+    @user = users(:api_bestnames)
+    @user.identity_code = '1234'
+    @user.save
+  end
+
+  def test_mobile_id_sign_in_page
+    mock_client = Minitest::Mock.new
+    mock_client.expect(:authenticate,
+                       OpenStruct.new(user_id_code: '1234', challenge_id: '1234'),
+                       [{ phone: "+3721234",
+                         message_to_display: "Authenticating",
+                         service_name: "Testimine" }])
+    mock_client.expect(:session_code, 1234)
+
+    Digidoc::Client.stub(:new, mock_client) do
+      visit registrar_login_path
+
+      click_on 'login-with-mobile-id-btn'
+
+      fill_in 'user[phone]', with: '1234'
+      click_button 'Login'
+
+      flash_message = page.find('div.bg-success')
+      assert_equal('Confirmation sms was sent to your phone. Verification code is 1234.',
+                   flash_message.text)
+    end
+  end
+end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index a55776fd2..500861f75 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -13,6 +13,8 @@ require 'capybara/minitest'
 require 'webmock/minitest'
 require 'support/rails5_assetions' # Remove once upgraded to Rails 5
 
+require 'application_system_test_case'
+
 Setting.address_processing = false
 Setting.registry_country_code = 'US'
 
@@ -38,4 +40,4 @@ class ActionDispatch::IntegrationTest
     Capybara.reset_sessions!
     Capybara.use_default_driver
   end
-end
\ No newline at end of file
+end