Merge #​2659 "Use Rails transactional tests"

spec/support/database_cleaner.rb

@@ -2,16 +2,7 @@
 
 RSpec.configure do |config|
   config.before(:suite) do
-    DatabaseCleaner.clean_with(:transaction)
+    DatabaseCleaner.clean_with(:truncation)
     Rails.application.load_seed
   end
-
-  config.before(:each) do
-    DatabaseCleaner.start
-  end
-
-  config.after(:each) do |example|
-    TransactionalCapybara::AjaxHelpers.wait_for_ajax(page) if example.metadata[:js]
-    DatabaseCleaner.clean
-  end
 end

spec/support/kneet_connections.rb

@@ -1,14 +0,0 @@
-# frozen_string_literal: true
-
-module ActiveRecord
-  class Base
-    mattr_accessor :shared_connection
-    @@shared_connection = nil
-
-    def self.connection
-      @@shared_connection || retrieve_connection
-    end
-  end
-end
-
-ActiveRecord::Base.shared_connection = ActiveRecord::Base.connection