paralellize tests 🚀

.gitignore

@@ -10,6 +10,7 @@
 
 # Ignore the default SQLite database.
 /db/*.sqlite3
+/db/*.sqlite3-*
 /db/*.sqlite3-journal
 
 # Ignore all logfiles and tempfiles.

.travis.yml

@@ -11,6 +11,7 @@ env:
     - AIRTIME_DB_ADAPTER=postgresql
     - AIRTIME_DB_NAME=airtime_test
     - AIRTIME_DB_USERNAME=postgres
+    - PARALLEL_WORKERS=1
 
 sudo: false
 

app/services/file_store/structure.rb

@@ -7,7 +7,14 @@ class Structure
     class << self
 
       def home
-        Rails.application.secrets.archive_home
+        home = Rails.application.secrets.archive_home
+        # rubocop:disable Style/GlobalVars
+        if Rails.env.test? && $TEST_WORKER
+          File.join(home, $TEST_WORKER.to_s)
+        # rubocop:enable Style/GlobalVars
+        else
+          home
+        end
       end
 
     end

app/services/import/recording/finder.rb

@@ -13,8 +13,11 @@ def imported
       end
 
       def import_directories
-        Rails.application.secrets.import_directories ||
-          raise('IMPORT_DIRECTORIES not set!')
+        if Rails.env.test? && $TEST_WORKER # rubocop:disable Style/GlobalVars
+          parallelized_import_directories
+        else
+          config_import_directories
+        end
       end
 
       private
@@ -27,6 +30,17 @@ def glob_recordings(pattern)
         end.flatten
       end
 
+      def config_import_directories
+        Rails.application.secrets.import_directories ||
+          raise('IMPORT_DIRECTORIES not set!')
+      end
+
+      def parallelized_import_directories
+        config_import_directories.map do |dir|
+          ::File.join(dir, $TEST_WORKER.to_s) # rubocop:disable Style/GlobalVars
+        end
+      end
+
     end
 
   end

test/controllers/status_controller_test.rb

@@ -3,8 +3,8 @@
 class StatusControllerTest < ActionController::TestCase
 
   setup do
-    FileUtils.mkdir_p(Rails.application.secrets.archive_home)
-    FileUtils.touch(File.join(Rails.application.secrets.archive_home, 'dummy_content.data'))
+    FileUtils.mkdir_p(FileStore::Structure.home)
+    FileUtils.touch(File.join(FileStore::Structure.home, 'dummy_content.data'))
   end
 
   test 'GET show returns json' do

test/models/status_test.rb

@@ -25,8 +25,8 @@ class StatusTest < ActiveSupport::TestCase
   end
 
   test 'file_system is true if directory has content' do
-    FileUtils.mkdir_p(Rails.application.secrets.archive_home)
-    FileUtils.touch(File.join(Rails.application.secrets.archive_home, 'dummy_content.data'))
+    FileUtils.mkdir_p(FileStore::Structure.home)
+    FileUtils.touch(File.join(FileStore::Structure.home, 'dummy_content.data'))
     assert_equal true, Status.new.file_system
   end
 

test/support/airtime_helper.rb

@@ -3,6 +3,16 @@ module AirtimeHelper
 
   included do
     setup :setup_airtime
+    parallelize_setup { |worker| create_airtime_db(worker) }
+  end
+
+  module ClassMethods
+    def create_airtime_db(worker)
+      Airtime::Base.establish_connection(
+        adapter: :sqlite3,
+        database: "db/airtime_test_#{worker}.sqlite3"
+      )
+    end
   end
 
   private

test/test_helper.rb

@@ -26,12 +26,18 @@
 
 class ActiveSupport::TestCase
 
+  parallelize(workers: :number_of_processors)
+
   # Setup all fixtures in test/fixtures/*.yml for all tests in alphabetical order.
   fixtures :all
 
   # Add more helper methods to be used by all tests here...
   include CustomAssertions
 
+  parallelize_setup do |worker|
+    $TEST_WORKER = worker # use global variable for process based parallelization
+  end
+
   def encode_token(token)
     ActionController::HttpAuthentication::Token.encode_credentials(token)
   end