Enable frozen string in lib/api and lib/backup

Partially addresses #47424.

Had to make changes to spec files because
stubbing methods on frozen objects is a mess
in RSpec and leads to failures:

https://github.com/rspec/rspec-mocks/issues/1190

11 files changed, 22 insertions, 0 deletions

diff --git a/lib/backup/artifacts.rb b/lib/backup/artifacts.rb
index 45a935ab352..33658ae225f 100644
--- a/lib/backup/artifacts.rb
+++ b/lib/backup/artifacts.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'backup/files'
 
 module Backup
diff --git a/lib/backup/builds.rb b/lib/backup/builds.rb
index adf85ca4719..5e795a449de 100644
--- a/lib/backup/builds.rb
+++ b/lib/backup/builds.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'backup/files'
 
 module Backup
diff --git a/lib/backup/database.rb b/lib/backup/database.rb
index 086ca5986bd..e6bf3d1856f 100644
--- a/lib/backup/database.rb
+++ b/lib/backup/database.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'yaml'
 
 module Backup
diff --git a/lib/backup/files.rb b/lib/backup/files.rb
index e287aa1e392..0032ae8f84b 100644
--- a/lib/backup/files.rb
+++ b/lib/backup/files.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'open3'
 require_relative 'helper'
 
diff --git a/lib/backup/helper.rb b/lib/backup/helper.rb
index 54b9ce10b4d..22f00aef569 100644
--- a/lib/backup/helper.rb
+++ b/lib/backup/helper.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Backup
   module Helper
     def access_denied_error(path)
diff --git a/lib/backup/lfs.rb b/lib/backup/lfs.rb
index 185ff8ae6bd..0dfe56e214f 100644
--- a/lib/backup/lfs.rb
+++ b/lib/backup/lfs.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'backup/files'
 
 module Backup
diff --git a/lib/backup/manager.rb b/lib/backup/manager.rb
index a3641505196..5d4a7efc456 100644
--- a/lib/backup/manager.rb
+++ b/lib/backup/manager.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Backup
   class Manager
     ARCHIVES_TO_BACKUP = %w[uploads builds artifacts pages lfs registry].freeze
diff --git a/lib/backup/pages.rb b/lib/backup/pages.rb
index 542e35a7c7c..a4be728df08 100644
--- a/lib/backup/pages.rb
+++ b/lib/backup/pages.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'backup/files'
 
 module Backup
diff --git a/lib/backup/registry.rb b/lib/backup/registry.rb
index 35821805797..d16ed2facf1 100644
--- a/lib/backup/registry.rb
+++ b/lib/backup/registry.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'backup/files'
 
 module Backup
diff --git a/lib/backup/repository.rb b/lib/backup/repository.rb
index 906ed498026..c8a5377bfa0 100644
--- a/lib/backup/repository.rb
+++ b/lib/backup/repository.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'yaml'
 
 module Backup
diff --git a/lib/backup/uploads.rb b/lib/backup/uploads.rb
index 49b117a7ee3..9577df2634a 100644
--- a/lib/backup/uploads.rb
+++ b/lib/backup/uploads.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'backup/files'
 
 module Backup