Make ObjectStoreSettings use more explicit and add specs

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

config/initializers/1_settings.rb

 require_relative '../settings'
+require_relative '../object_store_settings'
 # Default settings
 Settings['ldap'] ||= Settingslogic.new({})
@@ -170,8 +171,6 @@ Settings.gitlab_ci['url']                 ||= Settings.__send__(:build_gitlab_ci
 Settings['incoming_email'] ||= Settingslogic.new({})
 Settings.incoming_email['enabled'] = false if Settings.incoming_email['enabled'].nil?
-
-
 #
 # Build Artifacts
 #
@@ -181,8 +180,7 @@ Settings.artifacts['storage_path'] = Settings.absolute(Settings.artifacts.values
 # Settings.artifact['path'] is deprecated, use `storage_path` instead
 Settings.artifacts['path']         = Settings.artifacts['storage_path']
 Settings.artifacts['max_size'] ||= 100 # in megabytes
-ObjectStoreSettings.new(Settings.artifacts['object_store'])
-
+Settings.artifacts['object_store'] = ObjectStoreSettings.parse(Settings.artifacts['object_store'])
 #
 # Registry
@@ -221,7 +219,7 @@ Settings.pages.admin['certificate'] ||= ''
 Settings['lfs'] ||= Settingslogic.new({})
 Settings.lfs['enabled']      = true if Settings.lfs['enabled'].nil?
 Settings.lfs['storage_path'] = Settings.absolute(Settings.lfs['storage_path'] || File.join(Settings.shared['path'], "lfs-objects"))
-ObjectStoreSettings.new(Settings.lfs['object_store'])
+Settings.lfs['object_store'] = ObjectStoreSettings.parse(Settings.lfs['object_store'])
 #
 # Uploads
@@ -229,7 +227,8 @@ ObjectStoreSettings.new(Settings.lfs['object_store'])
 Settings['uploads'] ||= Settingslogic.new({})
 Settings.uploads['storage_path'] = Settings.absolute(Settings.uploads['storage_path'] || 'public')
 Settings.uploads['base_dir'] = Settings.uploads['base_dir'] || 'uploads/-/system'
-ObjectStoreSettings.new(Settings.uploads['object_store'])
+Settings.uploads['object_store'] = ObjectStoreSettings.parse(Settings.uploads['object_store'])
+Settings.uploads['object_store']['remote_directory'] ||= 'uploads'
 #
 # Mattermost

config/object_store_settings.rb

 # Set default values for object_store settings
 class ObjectStoreSettings
-  def initialize(object_store)
+  def self.parse(object_store)
     object_store ||= Settingslogic.new({})
     object_store['enabled'] = false if object_store['enabled'].nil?
     object_store['remote_directory'] ||= nil
     object_store['direct_upload'] = false if object_store['direct_upload'].nil?
     object_store['background_upload'] = true if object_store['background_upload'].nil?
     object_store['proxy_download'] = false if object_store['proxy_download'].nil?
+
     # Convert upload connection settings to use string keys, to make Fog happy
     object_store['connection']&.deep_stringify_keys!
+    object_store
   end
 end

spec/config/object_store_settings_spec.rb

+require 'spec_helper'
+require Rails.root.join('config', 'object_store_settings.rb')
+
+describe ObjectStoreSettings do
+  describe '.parse' do
+    it 'should set correct default values' do
+      settings = described_class.parse(nil)
+
+      expect(settings['enabled']).to be false
+      expect(settings['direct_upload']).to be false
+      expect(settings['background_upload']).to be true
+      expect(settings['remote_directory']).to be nil
+    end
+
+    it 'respects original values' do
+      original_settings = Settingslogic.new({
+        'enabled' => true,
+        'remote_directory' => 'artifacts'
+      })
+
+      settings = described_class.parse(original_settings)
+
+      expect(settings['enabled']).to be true
+      expect(settings['direct_upload']).to be false
+      expect(settings['background_upload']).to be true
+      expect(settings['remote_directory']).to eq 'artifacts'
+    end
+  end
+end