Use system specs instead of feature specs

We get rid of database cleaner, and JavaScript tests are faster because
between tests we now rollback transactions instead of truncating the
database.

Gemfile

@@ -82,7 +82,6 @@ group :test do
   gem "capybara", "~> 3.29.0"
   gem "capybara-webmock", "~> 0.5.3"
   gem "coveralls", "~> 0.8.22", require: false
-  gem "database_cleaner", "~> 1.7.0"
   gem "email_spec", "~> 2.2.0"
   gem "rspec-rails", "~> 3.8"
   gem "selenium-webdriver", "~> 3.141"
@@ -94,6 +93,7 @@ group :development do
   gem "capistrano-rails", "~> 1.4.0", require: false
   gem "capistrano3-delayed-job", "~> 1.7.3"
   gem "capistrano3-puma", "~> 4.0.0"
+  gem "database_cleaner", "~> 1.7.0"
   gem "erb_lint", require: false
   gem "github_changelog_generator", "~> 1.15.0"
   gem "mdl", "~> 0.5.0", require: false

db/dev_seeds.rb

@@ -1,5 +1,7 @@
+unless Rails.env.test?
   require "database_cleaner"
   DatabaseCleaner.clean_with :truncation
+end
 @logger = Logger.new(STDOUT)
 @logger.formatter = proc do |_severity, _datetime, _progname, msg|
                       msg unless @avoid_log

spec/lib/tasks/sitemap_spec.rb

@@ -1,6 +1,6 @@
 require "rails_helper"
 
-describe "rake sitemap:create", type: :feature do
+describe "rake sitemap:create", type: :system do
   let(:file) { Rails.root.join("public", "sitemap.xml") }
 
   before do

spec/rails_helper.rb

@@ -26,10 +26,6 @@ RSpec.configure do |config|
   end
 end
 
-Capybara.register_driver :chrome do |app|
-  Capybara::Selenium::Driver.new(app, browser: :chrome)
-end
-
 Capybara.register_driver :headless_chrome do |app|
   capabilities = Selenium::WebDriver::Remote::Capabilities.chrome(
     "goog:chromeOptions" => {
@@ -44,8 +40,6 @@ Capybara.register_driver :headless_chrome do |app|
   )
 end
 
-Capybara.javascript_driver = :headless_chrome
-
 Capybara.exact = true
 
 OmniAuth.config.test_mode = true

spec/spec_helper.rb

@@ -1,5 +1,4 @@
 require "factory_bot_rails"
-require "database_cleaner"
 require "email_spec"
 require "devise"
 require "knapsack_pro"
@@ -9,7 +8,7 @@ Dir["./spec/support/**/*.rb"].sort.each { |f| require f }
 Dir["./spec/shared/**/*.rb"].sort.each  { |f| require f }
 
 RSpec.configure do |config|
-  config.use_transactional_fixtures = false
+  config.use_transactional_fixtures = true
 
   config.filter_run :focus
   config.run_all_when_everything_filtered = true
@@ -21,29 +20,7 @@ RSpec.configure do |config|
   config.include(CommonActions)
   config.include(ActiveSupport::Testing::TimeHelpers)
 
-  config.before(:suite) do
-    DatabaseCleaner.clean_with :truncation
-  end
-
-  config.before(:suite) do
-    if config.use_transactional_fixtures?
-      raise(<<-MSG)
-        Delete line `config.use_transactional_fixtures = true` from rails_helper.rb
-        (or set it to false) to prevent uncommitted transactions being used in
-        JavaScript-dependent specs.
-
-        During testing, the app-under-test that the browser driver connects to
-        uses a different database connection to the database connection used by
-        the spec. The app's database connection would not be able to access
-        uncommitted transaction data setup over the spec's database connection.
-      MSG
-    end
-
-    DatabaseCleaner.clean_with(:truncation)
-  end
-
   config.before do |example|
-    DatabaseCleaner.strategy = :transaction
     I18n.locale = :en
     Globalize.locale = nil
     Globalize.set_fallbacks_to_all_available_locales
@@ -51,20 +28,7 @@ RSpec.configure do |config|
     Setting["feature.user.skip_verification"] = nil
   end
 
-  config.before(:each, type: :feature) do
+  config.before(:each, type: :system) do
-    # :rack_test driver's Rack app under test shares database connection
-    # with the specs, so continue to use transaction strategy for speed.
-    driver_shares_db_connection_with_specs = Capybara.current_driver == :rack_test
-
-    unless driver_shares_db_connection_with_specs
-      # Driver is probably for an external browser with an app
-      # under test that does *not* share a database connection with the
-      # specs, so use truncation strategy.
-      DatabaseCleaner.strategy = :truncation
-    end
-  end
-
-  config.before(:each, type: :feature) do
     Capybara::Webmock.start
   end
 
@@ -76,20 +40,20 @@ RSpec.configure do |config|
     page.driver.reset!
   end
 
-  config.before do
+  config.before(:each, type: :system) do |example|
-    DatabaseCleaner.start
+    driven_by :rack_test
   end
 
-  config.append_after do
+  config.before(:each, type: :system, js: true) do
-    DatabaseCleaner.clean
+    driven_by :headless_chrome
   end
 
-  config.before(:each, type: :feature) do
+  config.before(:each, type: :system) do
     Bullet.start_request
     allow(InvisibleCaptcha).to receive(:timestamp_threshold).and_return(0)
   end
 
-  config.after(:each, type: :feature) do
+  config.after(:each, type: :system) do
     Bullet.perform_out_of_channel_notifications if Bullet.notification?
     Bullet.end_request
   end