Setup DatabaseCleaner

spec/rails_helper.rb

@@ -9,6 +9,7 @@
 # that will avoid rails generators crashing because migrations haven't been run yet
 # return unless Rails.env.test?
 require "rspec/rails"
+require "database_cleaner"
 
 # Add additional requires below this line. Rails is not loaded until this point!
 
@@ -49,6 +50,20 @@
   # You can uncomment this line to turn off ActiveRecord support entirely.
   # config.use_active_record = false
 
+  # Setup Database cleaner to avoid state leaks between tests
+  config.before(:suite) do
+    DatabaseCleaner.clean_with :truncation, except: [:ar_internal_metadata]
+  end
+
+  config.before do
+    DatabaseCleaner.strategy = :transaction
+    DatabaseCleaner.start
+  end
+
+  config.append_after do
+    DatabaseCleaner.clean
+  end
+
   # Feature-specific config
   config.include Capybara::DSL, type: :feature
   config.include Capybara::RSpecMatchers, type: :feature