Added RSpec support file to initialize database into clean state before running suite.

Gemfile

@@ -173,6 +173,10 @@ group :development, :test do
   # record and replay TCP/HTTP transactions
   gem 'tcr'
   gem 'vcr'
+
+  # database cleanup when transactions are not possible
+  # and DB initialization before running RSpec suite
+  gem 'database_cleaner'
 end
 
 # Want to extend Zammad with additional gems?

Gemfile.lock

@@ -113,6 +113,7 @@ GEM
     crass (1.0.4)
     daemons (1.2.5)
     dalli (2.7.6)
+    database_cleaner (1.7.0)
     debug_inspector (0.0.3)
     delayed_job (4.1.3)
       activesupport (>= 3.0, < 5.2)
@@ -511,6 +512,7 @@ DEPENDENCIES
   coveralls
   daemons
   dalli
+  database_cleaner
   delayed_job_active_record
   diffy
   doorkeeper

db/seeds/settings.rb

@@ -2694,7 +2694,7 @@ Setting.create_if_not_exists(
   area: 'Models::Base',
   description: 'Defines the searchable models.',
   options: {},
-  state: [],
+  state: Models.searchable.map(&:to_s),
   preferences: {
     authentication: true,
   },

spec/support/reset_system_before_suite.rb

@@ -0,0 +1,8 @@
+RSpec.configure do |config|
+  config.before(:suite) do
+    DatabaseCleaner.clean_with(:truncation)
+    Rails.application.load_seed
+    Cache.clear
+    Setting.reload
+  end
+end