Trying out headless Firefox instead of PhantomJS

Gemfile

@@ -29,9 +29,10 @@ end
 
 group :test do
   gem "capybara"
+  gem "geckodriver-helper"
   gem "launchy"
-  gem "poltergeist"
   gem "rspec-rails"
+  gem "selenium-webdriver"
   gem "shoulda-matchers"
   gem "webmock"
 end

Gemfile.lock

@@ -44,6 +44,8 @@ GEM
       tzinfo (~> 1.1)
     addressable (2.5.2)
       public_suffix (>= 2.0.2, < 4.0)
+    archive-zip (0.11.0)
+      io-like (~> 0.3.0)
     arel (9.0.0)
     better_errors (2.5.0)
       coderay (>= 1.0.0)
@@ -59,7 +61,8 @@ GEM
       rack (>= 1.6.0)
       rack-test (>= 0.6.3)
       xpath (~> 3.1)
-    cliver (0.3.2)
+    childprocess (0.9.0)
+      ffi (~> 1.0, >= 1.0.11)
     coderay (1.1.2)
     concurrent-ruby (1.0.5)
     crack (0.4.3)
@@ -87,6 +90,8 @@ GEM
     faraday (0.12.2)
       multipart-post (>= 1.2, < 3)
     ffi (1.9.25)
+    geckodriver-helper (0.21.0)
+      archive-zip (~> 0.7)
     globalid (0.4.1)
       activesupport (>= 4.2.0)
     hashdiff (0.3.7)
@@ -102,6 +107,7 @@ GEM
     http_parser.rb (0.6.0)
     i18n (1.1.0)
       concurrent-ruby (~> 1.0)
+    io-like (0.3.0)
     jwt (1.5.6)
     launchy (2.4.3)
       addressable (~> 2.3)
@@ -139,10 +145,6 @@ GEM
       oauth2 (~> 1.1)
       omniauth (~> 1.2)
     pg (1.1.3)
-    poltergeist (1.18.1)
-      capybara (>= 2.1, < 4)
-      cliver (~> 0.3.1)
-      websocket-driver (>= 0.2.0)
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
@@ -171,8 +173,6 @@ GEM
       nokogiri (>= 1.6)
     rails-html-sanitizer (1.0.4)
       loofah (~> 2.2, >= 2.2.2)
-    rails-ujs (0.1.0)
-      railties (>= 3.1)
     railties (5.2.1)
       actionpack (= 5.2.1)
       activesupport (= 5.2.1)
@@ -201,6 +201,7 @@ GEM
       rspec-mocks (~> 3.8.0)
       rspec-support (~> 3.8.0)
     rspec-support (3.8.0)
+    rubyzip (1.2.2)
     safe_yaml (1.0.4)
     sass (3.5.7)
       sass-listen (~> 4.0.0)
@@ -215,6 +216,9 @@ GEM
       tilt (>= 1.1, < 3)
     sdoc (1.0.0)
       rdoc (>= 5.0)
+    selenium-webdriver (3.14.0)
+      childprocess (~> 0.5)
+      rubyzip (~> 1.2)
     shoulda-matchers (3.1.2)
       activesupport (>= 4.0.0)
     simple_form (4.0.1)
@@ -261,18 +265,18 @@ DEPENDENCIES
   delayed_job_active_record
   dotenv-rails
   dragonfly
+  geckodriver-helper
   http
   launchy
   omniauth-github
   pg
-  poltergeist
   pry
   puma
   rails (= 5.2.1)
-  rails-ujs
   rspec-rails
   sass-rails
   sdoc
+  selenium-webdriver
   shoulda-matchers
   simple_form
   uglifier

app/controllers/tags_controller.rb

@@ -4,6 +4,7 @@ class TagsController < ApplicationController
   def create
     image = @current_user.images.find(params[:image_id])
     tag = params[:tag]
+
     if !image.tags.include?(tag)
       image.tags << tag
       image.save

config/environments/test.rb

@@ -24,7 +24,7 @@ MyImages::Application.configure do
   config.action_dispatch.show_exceptions = false
 
   # Disable request forgery protection in test environment.
-  config.action_controller.allow_forgery_protection = false
+  config.action_controller.allow_forgery_protection = true
 
   # Tell Action Mailer not to deliver emails to the real world.
   # The :test delivery method accumulates sent emails in the

spec/features/user_manages_image_tags_spec.rb

@@ -18,7 +18,7 @@ feature "user manages image tags by visitng images show page" do
     end
   end
 
-  scenario "and can click the link to delete a tag" do
+  scenario "and can click the link to delete a tag", js: true do
     tags = ["one", "two"]
     user = User.create(uid: "123")
     Image.create(
@@ -37,7 +37,7 @@ feature "user manages image tags by visitng images show page" do
     expect(page).to_not have_content(tags.first)
   end
 
-  scenario "user can add a tag to the list of tags" do
+  scenario "user can add a tag to the list of tags", js: true do
     tags = ["one", "two"]
     user = User.create(uid: "123")
     new_tag = "new tag"

spec/rails_helper.rb

@@ -9,7 +9,6 @@ end
 require "rspec/rails"
 require "shoulda/matchers"
 require "capybara/rspec"
-require "capybara/poltergeist"
 
 Dir[Rails.root.join("spec", "support", "**", "*.rb")].each { |f| require f }
 
@@ -20,7 +19,14 @@ rescue ActiveRecord::PendingMigrationError => e
   exit 1
 end
 
-Capybara.javascript_driver = :poltergeist
+Capybara.register_driver :firefox_headless do |app|
+  options = ::Selenium::WebDriver::Firefox::Options.new
+  options.args << "--headless"
+
+  Capybara::Selenium::Driver.new(app, browser: :firefox, options: options)
+end
+
+Capybara.javascript_driver = :firefox_headless
 
 RSpec.configure do |config|
   config.fixture_path = "#{::Rails.root}/spec/fixtures"