Enable frozen string in apps/services/**/*.rb

For directories application_settings --> labels.

Partially addresses #47424.

6 files changed, 12 insertions, 0 deletions

diff --git a/app/services/labels/base_service.rb b/app/services/labels/base_service.rb
index 91d72a57b4e..ead7f2ea607 100644
--- a/app/services/labels/base_service.rb
+++ b/app/services/labels/base_service.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Labels
   class BaseService < ::BaseService
     COLOR_NAME_TO_HEX = {
diff --git a/app/services/labels/create_service.rb b/app/services/labels/create_service.rb
index 6c399c92377..fe34be41ac1 100644
--- a/app/services/labels/create_service.rb
+++ b/app/services/labels/create_service.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Labels
   class CreateService < Labels::BaseService
     def initialize(params = {})
diff --git a/app/services/labels/find_or_create_service.rb b/app/services/labels/find_or_create_service.rb
index a72da3c637f..e4486764a4d 100644
--- a/app/services/labels/find_or_create_service.rb
+++ b/app/services/labels/find_or_create_service.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Labels
   class FindOrCreateService
     def initialize(current_user, parent, params = {})
diff --git a/app/services/labels/promote_service.rb b/app/services/labels/promote_service.rb
index 74a85e5c9f0..c0463052821 100644
--- a/app/services/labels/promote_service.rb
+++ b/app/services/labels/promote_service.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Labels
   class PromoteService < BaseService
     BATCH_SIZE = 1000
diff --git a/app/services/labels/transfer_service.rb b/app/services/labels/transfer_service.rb
index 9b7486cf53b..1bd8d9fc325 100644
--- a/app/services/labels/transfer_service.rb
+++ b/app/services/labels/transfer_service.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Labels::TransferService class
 #
 # User for recreate the missing group labels at project level
diff --git a/app/services/labels/update_service.rb b/app/services/labels/update_service.rb
index 28dcabf9541..c3a720a1c66 100644
--- a/app/services/labels/update_service.rb
+++ b/app/services/labels/update_service.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Labels
   class UpdateService < Labels::BaseService
     def initialize(params = {})