Merge branch 'frozen_string_lib_2' into 'master'

Add frozen_string_literal to lib part 2

See merge request gitlab-org/gitlab-ce!32094

201 files changed, 401 insertions, 3 deletions

diff --git a/lib/gitlab/profiler.rb b/lib/gitlab/profiler.rb
index ec7671f9a8b..425c30d67fe 100644
--- a/lib/gitlab/profiler.rb
+++ b/lib/gitlab/profiler.rb
@@ -97,7 +97,7 @@ module Gitlab
           attr_reader :load_times_by_model, :private_token
 
           def debug(message, *)
-            message.gsub!(private_token, FILTERED_STRING) if private_token
+            message = message.gsub(private_token, FILTERED_STRING) if private_token
 
             _, type, time = *message.match(/(\w+) Load \(([0-9.]+)ms\)/)
 
diff --git a/lib/gitlab/quick_actions/substitution_definition.rb b/lib/gitlab/quick_actions/substitution_definition.rb
index 2f78ea05cf0..0fda056a4fe 100644
--- a/lib/gitlab/quick_actions/substitution_definition.rb
+++ b/lib/gitlab/quick_actions/substitution_definition.rb
@@ -17,8 +17,9 @@ module Gitlab
         return unless content
 
         all_names.each do |a_name|
-          content.gsub!(%r{/#{a_name} ?(.*)$}i, execute_block(action_block, context, '\1'))
+          content = content.gsub(%r{/#{a_name} ?(.*)$}i, execute_block(action_block, context, '\1'))
         end
+
         content
       end
     end
diff --git a/spec/lib/gitlab/legacy_github_import/release_formatter_spec.rb b/spec/lib/gitlab/legacy_github_import/release_formatter_spec.rb
index 534cf219520..2cf4b367c0b 100644
--- a/spec/lib/gitlab/legacy_github_import/release_formatter_spec.rb
+++ b/spec/lib/gitlab/legacy_github_import/release_formatter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::LegacyGithubImport::ReleaseFormatter do
diff --git a/spec/lib/gitlab/legacy_github_import/user_formatter_spec.rb b/spec/lib/gitlab/legacy_github_import/user_formatter_spec.rb
index 3cd096eb0ad..919847fe061 100644
--- a/spec/lib/gitlab/legacy_github_import/user_formatter_spec.rb
+++ b/spec/lib/gitlab/legacy_github_import/user_formatter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::LegacyGithubImport::UserFormatter do
diff --git a/spec/lib/gitlab/legacy_github_import/wiki_formatter_spec.rb b/spec/lib/gitlab/legacy_github_import/wiki_formatter_spec.rb
index 7519707293c..639fb9d80eb 100644
--- a/spec/lib/gitlab/legacy_github_import/wiki_formatter_spec.rb
+++ b/spec/lib/gitlab/legacy_github_import/wiki_formatter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::LegacyGithubImport::WikiFormatter do
diff --git a/spec/lib/gitlab/loop_helpers_spec.rb b/spec/lib/gitlab/loop_helpers_spec.rb
index e17a0342d64..7e59b41d5b9 100644
--- a/spec/lib/gitlab/loop_helpers_spec.rb
+++ b/spec/lib/gitlab/loop_helpers_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::LoopHelpers do
diff --git a/spec/lib/gitlab/manifest_import/manifest_spec.rb b/spec/lib/gitlab/manifest_import/manifest_spec.rb
index ded93e23c08..c1135f710ea 100644
--- a/spec/lib/gitlab/manifest_import/manifest_spec.rb
+++ b/spec/lib/gitlab/manifest_import/manifest_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::ManifestImport::Manifest do
diff --git a/spec/lib/gitlab/manifest_import/project_creator_spec.rb b/spec/lib/gitlab/manifest_import/project_creator_spec.rb
index a7487972f51..a8cfcfb41d3 100644
--- a/spec/lib/gitlab/manifest_import/project_creator_spec.rb
+++ b/spec/lib/gitlab/manifest_import/project_creator_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::ManifestImport::ProjectCreator do
diff --git a/spec/lib/gitlab/markup_helper_spec.rb b/spec/lib/gitlab/markup_helper_spec.rb
index 09e518ff989..b93538cae5a 100644
--- a/spec/lib/gitlab/markup_helper_spec.rb
+++ b/spec/lib/gitlab/markup_helper_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::MarkupHelper do
diff --git a/spec/lib/gitlab/metrics/background_transaction_spec.rb b/spec/lib/gitlab/metrics/background_transaction_spec.rb
index 17445fe6de5..d87d2c839ad 100644
--- a/spec/lib/gitlab/metrics/background_transaction_spec.rb
+++ b/spec/lib/gitlab/metrics/background_transaction_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::BackgroundTransaction do
diff --git a/spec/lib/gitlab/metrics/delta_spec.rb b/spec/lib/gitlab/metrics/delta_spec.rb
index 718387cdee1..9bb011dc8fc 100644
--- a/spec/lib/gitlab/metrics/delta_spec.rb
+++ b/spec/lib/gitlab/metrics/delta_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::Delta do
diff --git a/spec/lib/gitlab/metrics/instrumentation_spec.rb b/spec/lib/gitlab/metrics/instrumentation_spec.rb
index 977bc250049..0e2f274f157 100644
--- a/spec/lib/gitlab/metrics/instrumentation_spec.rb
+++ b/spec/lib/gitlab/metrics/instrumentation_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::Instrumentation do
diff --git a/spec/lib/gitlab/metrics/method_call_spec.rb b/spec/lib/gitlab/metrics/method_call_spec.rb
index d9379cfe674..3b5e04e2df5 100644
--- a/spec/lib/gitlab/metrics/method_call_spec.rb
+++ b/spec/lib/gitlab/metrics/method_call_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::MethodCall do
diff --git a/spec/lib/gitlab/metrics/methods_spec.rb b/spec/lib/gitlab/metrics/methods_spec.rb
index 9d41ed2442b..bca94deb1d8 100644
--- a/spec/lib/gitlab/metrics/methods_spec.rb
+++ b/spec/lib/gitlab/metrics/methods_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::Methods do
diff --git a/spec/lib/gitlab/metrics/metric_spec.rb b/spec/lib/gitlab/metrics/metric_spec.rb
index d240b8a01fd..611b59231ba 100644
--- a/spec/lib/gitlab/metrics/metric_spec.rb
+++ b/spec/lib/gitlab/metrics/metric_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::Metric do
diff --git a/spec/lib/gitlab/metrics/prometheus_spec.rb b/spec/lib/gitlab/metrics/prometheus_spec.rb
index 3d4dd5fdf01..b37624982e2 100644
--- a/spec/lib/gitlab/metrics/prometheus_spec.rb
+++ b/spec/lib/gitlab/metrics/prometheus_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::Prometheus, :prometheus do
diff --git a/spec/lib/gitlab/metrics/rack_middleware_spec.rb b/spec/lib/gitlab/metrics/rack_middleware_spec.rb
index b84387204ee..1c1681cc5ab 100644
--- a/spec/lib/gitlab/metrics/rack_middleware_spec.rb
+++ b/spec/lib/gitlab/metrics/rack_middleware_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::RackMiddleware do
diff --git a/spec/lib/gitlab/metrics/requests_rack_middleware_spec.rb b/spec/lib/gitlab/metrics/requests_rack_middleware_spec.rb
index ebe66948a91..c29db3a93ec 100644
--- a/spec/lib/gitlab/metrics/requests_rack_middleware_spec.rb
+++ b/spec/lib/gitlab/metrics/requests_rack_middleware_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::RequestsRackMiddleware do
diff --git a/spec/lib/gitlab/metrics/samplers/influx_sampler_spec.rb b/spec/lib/gitlab/metrics/samplers/influx_sampler_spec.rb
index 2923048f742..2d4b27a6ac1 100644
--- a/spec/lib/gitlab/metrics/samplers/influx_sampler_spec.rb
+++ b/spec/lib/gitlab/metrics/samplers/influx_sampler_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::Samplers::InfluxSampler do
diff --git a/spec/lib/gitlab/metrics/samplers/ruby_sampler_spec.rb b/spec/lib/gitlab/metrics/samplers/ruby_sampler_spec.rb
index 5005a5d9ebc..8c4071a7ed1 100644
--- a/spec/lib/gitlab/metrics/samplers/ruby_sampler_spec.rb
+++ b/spec/lib/gitlab/metrics/samplers/ruby_sampler_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::Samplers::RubySampler do
diff --git a/spec/lib/gitlab/metrics/samplers/unicorn_sampler_spec.rb b/spec/lib/gitlab/metrics/samplers/unicorn_sampler_spec.rb
index 4b697b2ba0f..cdfd95e3885 100644
--- a/spec/lib/gitlab/metrics/samplers/unicorn_sampler_spec.rb
+++ b/spec/lib/gitlab/metrics/samplers/unicorn_sampler_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::Samplers::UnicornSampler do
diff --git a/spec/lib/gitlab/metrics/sidekiq_metrics_exporter_spec.rb b/spec/lib/gitlab/metrics/sidekiq_metrics_exporter_spec.rb
index 61eb059a731..9eea3eb79dc 100644
--- a/spec/lib/gitlab/metrics/sidekiq_metrics_exporter_spec.rb
+++ b/spec/lib/gitlab/metrics/sidekiq_metrics_exporter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::SidekiqMetricsExporter do
diff --git a/spec/lib/gitlab/metrics/sidekiq_middleware_spec.rb b/spec/lib/gitlab/metrics/sidekiq_middleware_spec.rb
index ae1d8b47fe9..bb95d5ab2ad 100644
--- a/spec/lib/gitlab/metrics/sidekiq_middleware_spec.rb
+++ b/spec/lib/gitlab/metrics/sidekiq_middleware_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::SidekiqMiddleware do
diff --git a/spec/lib/gitlab/metrics/subscribers/action_view_spec.rb b/spec/lib/gitlab/metrics/subscribers/action_view_spec.rb
index 9f3af1acef7..25c0e7b695a 100644
--- a/spec/lib/gitlab/metrics/subscribers/action_view_spec.rb
+++ b/spec/lib/gitlab/metrics/subscribers/action_view_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::Subscribers::ActionView do
diff --git a/spec/lib/gitlab/metrics/subscribers/active_record_spec.rb b/spec/lib/gitlab/metrics/subscribers/active_record_spec.rb
index ee6d6fc961f..1624cea8bda 100644
--- a/spec/lib/gitlab/metrics/subscribers/active_record_spec.rb
+++ b/spec/lib/gitlab/metrics/subscribers/active_record_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::Subscribers::ActiveRecord do
diff --git a/spec/lib/gitlab/metrics/subscribers/rails_cache_spec.rb b/spec/lib/gitlab/metrics/subscribers/rails_cache_spec.rb
index e04056b3450..ab0d89b2683 100644
--- a/spec/lib/gitlab/metrics/subscribers/rails_cache_spec.rb
+++ b/spec/lib/gitlab/metrics/subscribers/rails_cache_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::Subscribers::RailsCache do
diff --git a/spec/lib/gitlab/metrics/system_spec.rb b/spec/lib/gitlab/metrics/system_spec.rb
index 3b434a02f63..6d2764a06f2 100644
--- a/spec/lib/gitlab/metrics/system_spec.rb
+++ b/spec/lib/gitlab/metrics/system_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::System do
diff --git a/spec/lib/gitlab/metrics/web_transaction_spec.rb b/spec/lib/gitlab/metrics/web_transaction_spec.rb
index 0b3b23e930f..2b35f07cc0d 100644
--- a/spec/lib/gitlab/metrics/web_transaction_spec.rb
+++ b/spec/lib/gitlab/metrics/web_transaction_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics::WebTransaction do
diff --git a/spec/lib/gitlab/metrics_spec.rb b/spec/lib/gitlab/metrics_spec.rb
index 03c185ddc07..f0ba12c1cd0 100644
--- a/spec/lib/gitlab/metrics_spec.rb
+++ b/spec/lib/gitlab/metrics_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Metrics do
diff --git a/spec/lib/gitlab/middleware/basic_health_check_spec.rb b/spec/lib/gitlab/middleware/basic_health_check_spec.rb
index 86bdc479b66..07fda691ac8 100644
--- a/spec/lib/gitlab/middleware/basic_health_check_spec.rb
+++ b/spec/lib/gitlab/middleware/basic_health_check_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Middleware::BasicHealthCheck do
diff --git a/spec/lib/gitlab/middleware/multipart_spec.rb b/spec/lib/gitlab/middleware/multipart_spec.rb
index 3f6ada6832a..33797817578 100644
--- a/spec/lib/gitlab/middleware/multipart_spec.rb
+++ b/spec/lib/gitlab/middleware/multipart_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 require 'tempfile'
diff --git a/spec/lib/gitlab/middleware/rails_queue_duration_spec.rb b/spec/lib/gitlab/middleware/rails_queue_duration_spec.rb
index 14f2c3cb86f..31359abdce3 100644
--- a/spec/lib/gitlab/middleware/rails_queue_duration_spec.rb
+++ b/spec/lib/gitlab/middleware/rails_queue_duration_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Middleware::RailsQueueDuration do
diff --git a/spec/lib/gitlab/middleware/read_only_spec.rb b/spec/lib/gitlab/middleware/read_only_spec.rb
index 24d49a049b6..d2c8f4ab0bd 100644
--- a/spec/lib/gitlab/middleware/read_only_spec.rb
+++ b/spec/lib/gitlab/middleware/read_only_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Middleware::ReadOnly do
diff --git a/spec/lib/gitlab/middleware/release_env_spec.rb b/spec/lib/gitlab/middleware/release_env_spec.rb
index 5e3aa877409..3ca40f4ebd0 100644
--- a/spec/lib/gitlab/middleware/release_env_spec.rb
+++ b/spec/lib/gitlab/middleware/release_env_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Middleware::ReleaseEnv do
diff --git a/spec/lib/gitlab/multi_collection_paginator_spec.rb b/spec/lib/gitlab/multi_collection_paginator_spec.rb
index 28cd704b05a..f2049884b83 100644
--- a/spec/lib/gitlab/multi_collection_paginator_spec.rb
+++ b/spec/lib/gitlab/multi_collection_paginator_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::MultiCollectionPaginator do
diff --git a/spec/lib/gitlab/object_hierarchy_spec.rb b/spec/lib/gitlab/object_hierarchy_spec.rb
index bfd456cdd7e..b16eccbcb2c 100644
--- a/spec/lib/gitlab/object_hierarchy_spec.rb
+++ b/spec/lib/gitlab/object_hierarchy_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::ObjectHierarchy do
diff --git a/spec/lib/gitlab/octokit/middleware_spec.rb b/spec/lib/gitlab/octokit/middleware_spec.rb
index 43f6d13f7ba..8aa6d17ac9e 100644
--- a/spec/lib/gitlab/octokit/middleware_spec.rb
+++ b/spec/lib/gitlab/octokit/middleware_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Octokit::Middleware do
diff --git a/spec/lib/gitlab/omniauth_initializer_spec.rb b/spec/lib/gitlab/omniauth_initializer_spec.rb
index ef5c93e5c6b..99684bb2ab2 100644
--- a/spec/lib/gitlab/omniauth_initializer_spec.rb
+++ b/spec/lib/gitlab/omniauth_initializer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::OmniauthInitializer do
diff --git a/spec/lib/gitlab/optimistic_locking_spec.rb b/spec/lib/gitlab/optimistic_locking_spec.rb
index 6fdf61ee0a7..9dfcb775dfa 100644
--- a/spec/lib/gitlab/optimistic_locking_spec.rb
+++ b/spec/lib/gitlab/optimistic_locking_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::OptimisticLocking do
diff --git a/spec/lib/gitlab/other_markup_spec.rb b/spec/lib/gitlab/other_markup_spec.rb
index e26f39e193e..b5cf5b0999d 100644
--- a/spec/lib/gitlab/other_markup_spec.rb
+++ b/spec/lib/gitlab/other_markup_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::OtherMarkup do
diff --git a/spec/lib/gitlab/otp_key_rotator_spec.rb b/spec/lib/gitlab/otp_key_rotator_spec.rb
index 6e6e9ce29ac..f5a567d5ea0 100644
--- a/spec/lib/gitlab/otp_key_rotator_spec.rb
+++ b/spec/lib/gitlab/otp_key_rotator_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::OtpKeyRotator do
diff --git a/spec/lib/gitlab/pages_client_spec.rb b/spec/lib/gitlab/pages_client_spec.rb
index da6d26f4aee..84381843221 100644
--- a/spec/lib/gitlab/pages_client_spec.rb
+++ b/spec/lib/gitlab/pages_client_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::PagesClient do
diff --git a/spec/lib/gitlab/path_regex_spec.rb b/spec/lib/gitlab/path_regex_spec.rb
index 84b2e2dc823..7dcdad7ff92 100644
--- a/spec/lib/gitlab/path_regex_spec.rb
+++ b/spec/lib/gitlab/path_regex_spec.rb
@@ -1,4 +1,6 @@
 # coding: utf-8
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::PathRegex do
diff --git a/spec/lib/gitlab/performance_bar_spec.rb b/spec/lib/gitlab/performance_bar_spec.rb
index 71c109db1f1..8d8ac2aebbe 100644
--- a/spec/lib/gitlab/performance_bar_spec.rb
+++ b/spec/lib/gitlab/performance_bar_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::PerformanceBar do
diff --git a/spec/lib/gitlab/phabricator_import/importer_spec.rb b/spec/lib/gitlab/phabricator_import/importer_spec.rb
index bf14010a187..99a6e4dad6b 100644
--- a/spec/lib/gitlab/phabricator_import/importer_spec.rb
+++ b/spec/lib/gitlab/phabricator_import/importer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::PhabricatorImport::Importer do
diff --git a/spec/lib/gitlab/phabricator_import/user_finder_spec.rb b/spec/lib/gitlab/phabricator_import/user_finder_spec.rb
index 096321cda5f..918ff28c8f5 100644
--- a/spec/lib/gitlab/phabricator_import/user_finder_spec.rb
+++ b/spec/lib/gitlab/phabricator_import/user_finder_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::PhabricatorImport::UserFinder, :clean_gitlab_redis_cache do
diff --git a/spec/lib/gitlab/phabricator_import/worker_state_spec.rb b/spec/lib/gitlab/phabricator_import/worker_state_spec.rb
index a44947445c9..b6f2524a9d0 100644
--- a/spec/lib/gitlab/phabricator_import/worker_state_spec.rb
+++ b/spec/lib/gitlab/phabricator_import/worker_state_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::PhabricatorImport::WorkerState, :clean_gitlab_redis_shared_state do
diff --git a/spec/lib/gitlab/plugin_spec.rb b/spec/lib/gitlab/plugin_spec.rb
index 33dd4f79130..a8ddd774f3f 100644
--- a/spec/lib/gitlab/plugin_spec.rb
+++ b/spec/lib/gitlab/plugin_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Plugin do
diff --git a/spec/lib/gitlab/polling_interval_spec.rb b/spec/lib/gitlab/polling_interval_spec.rb
index eb8e618156b..979164269bd 100644
--- a/spec/lib/gitlab/polling_interval_spec.rb
+++ b/spec/lib/gitlab/polling_interval_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::PollingInterval do
diff --git a/spec/lib/gitlab/popen/runner_spec.rb b/spec/lib/gitlab/popen/runner_spec.rb
index 2e2cb4ca28f..de19106eaee 100644
--- a/spec/lib/gitlab/popen/runner_spec.rb
+++ b/spec/lib/gitlab/popen/runner_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Popen::Runner do
diff --git a/spec/lib/gitlab/popen_spec.rb b/spec/lib/gitlab/popen_spec.rb
index c1b84e9f077..29afd9df74e 100644
--- a/spec/lib/gitlab/popen_spec.rb
+++ b/spec/lib/gitlab/popen_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Popen do
diff --git a/spec/lib/gitlab/profiler_spec.rb b/spec/lib/gitlab/profiler_spec.rb
index 5af52db7a1f..a19392f4bcb 100644
--- a/spec/lib/gitlab/profiler_spec.rb
+++ b/spec/lib/gitlab/profiler_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Profiler do
diff --git a/spec/lib/gitlab/project_authorizations_spec.rb b/spec/lib/gitlab/project_authorizations_spec.rb
index 75e2d5e1319..82ccb42f8a6 100644
--- a/spec/lib/gitlab/project_authorizations_spec.rb
+++ b/spec/lib/gitlab/project_authorizations_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::ProjectAuthorizations do
diff --git a/spec/lib/gitlab/project_search_results_spec.rb b/spec/lib/gitlab/project_search_results_spec.rb
index c7462500c82..0dbfcf96124 100644
--- a/spec/lib/gitlab/project_search_results_spec.rb
+++ b/spec/lib/gitlab/project_search_results_spec.rb
@@ -1,4 +1,6 @@
 # coding: utf-8
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::ProjectSearchResults do
diff --git a/spec/lib/gitlab/project_template_spec.rb b/spec/lib/gitlab/project_template_spec.rb
index c7c82d07508..83acd979a80 100644
--- a/spec/lib/gitlab/project_template_spec.rb
+++ b/spec/lib/gitlab/project_template_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::ProjectTemplate do
diff --git a/spec/lib/gitlab/project_transfer_spec.rb b/spec/lib/gitlab/project_transfer_spec.rb
index 0b9b1f537b5..d54817ea02b 100644
--- a/spec/lib/gitlab/project_transfer_spec.rb
+++ b/spec/lib/gitlab/project_transfer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::ProjectTransfer do
diff --git a/spec/lib/gitlab/prometheus/additional_metrics_parser_spec.rb b/spec/lib/gitlab/prometheus/additional_metrics_parser_spec.rb
index 1a108003bc2..3f97a69b5eb 100644
--- a/spec/lib/gitlab/prometheus/additional_metrics_parser_spec.rb
+++ b/spec/lib/gitlab/prometheus/additional_metrics_parser_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Prometheus::AdditionalMetricsParser do
diff --git a/spec/lib/gitlab/prometheus/queries/additional_metrics_deployment_query_spec.rb b/spec/lib/gitlab/prometheus/queries/additional_metrics_deployment_query_spec.rb
index c7169717fc1..4bdc57c8c04 100644
--- a/spec/lib/gitlab/prometheus/queries/additional_metrics_deployment_query_spec.rb
+++ b/spec/lib/gitlab/prometheus/queries/additional_metrics_deployment_query_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Prometheus::Queries::AdditionalMetricsDeploymentQuery do
diff --git a/spec/lib/gitlab/prometheus/queries/additional_metrics_environment_query_spec.rb b/spec/lib/gitlab/prometheus/queries/additional_metrics_environment_query_spec.rb
index a6589f0c0a3..35dbdd55cfa 100644
--- a/spec/lib/gitlab/prometheus/queries/additional_metrics_environment_query_spec.rb
+++ b/spec/lib/gitlab/prometheus/queries/additional_metrics_environment_query_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Prometheus::Queries::AdditionalMetricsEnvironmentQuery do
diff --git a/spec/lib/gitlab/prometheus/queries/deployment_query_spec.rb b/spec/lib/gitlab/prometheus/queries/deployment_query_spec.rb
index ffe3ad85baa..0ad2de218fe 100644
--- a/spec/lib/gitlab/prometheus/queries/deployment_query_spec.rb
+++ b/spec/lib/gitlab/prometheus/queries/deployment_query_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Prometheus::Queries::DeploymentQuery do
diff --git a/spec/lib/gitlab/prometheus/queries/matched_metric_query_spec.rb b/spec/lib/gitlab/prometheus/queries/matched_metric_query_spec.rb
index 936447b8474..35034d814bf 100644
--- a/spec/lib/gitlab/prometheus/queries/matched_metric_query_spec.rb
+++ b/spec/lib/gitlab/prometheus/queries/matched_metric_query_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Prometheus::Queries::MatchedMetricQuery do
diff --git a/spec/lib/gitlab/prometheus_client_spec.rb b/spec/lib/gitlab/prometheus_client_spec.rb
index 0a4e8dbced5..86a1c14ed3f 100644
--- a/spec/lib/gitlab/prometheus_client_spec.rb
+++ b/spec/lib/gitlab/prometheus_client_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::PrometheusClient do
diff --git a/spec/lib/gitlab/query_limiting/active_support_subscriber_spec.rb b/spec/lib/gitlab/query_limiting/active_support_subscriber_spec.rb
index f8faeffb935..2db6d2fb60f 100644
--- a/spec/lib/gitlab/query_limiting/active_support_subscriber_spec.rb
+++ b/spec/lib/gitlab/query_limiting/active_support_subscriber_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::QueryLimiting::ActiveSupportSubscriber do
diff --git a/spec/lib/gitlab/query_limiting/middleware_spec.rb b/spec/lib/gitlab/query_limiting/middleware_spec.rb
index a04bcdecb4b..fb1c30118c2 100644
--- a/spec/lib/gitlab/query_limiting/middleware_spec.rb
+++ b/spec/lib/gitlab/query_limiting/middleware_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::QueryLimiting::Middleware do
diff --git a/spec/lib/gitlab/query_limiting/transaction_spec.rb b/spec/lib/gitlab/query_limiting/transaction_spec.rb
index b72b8574174..39d5a575efc 100644
--- a/spec/lib/gitlab/query_limiting/transaction_spec.rb
+++ b/spec/lib/gitlab/query_limiting/transaction_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::QueryLimiting::Transaction do
diff --git a/spec/lib/gitlab/query_limiting_spec.rb b/spec/lib/gitlab/query_limiting_spec.rb
index 42877b1e2dd..f0d0340cd6e 100644
--- a/spec/lib/gitlab/query_limiting_spec.rb
+++ b/spec/lib/gitlab/query_limiting_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::QueryLimiting do
diff --git a/spec/lib/gitlab/quick_actions/command_definition_spec.rb b/spec/lib/gitlab/quick_actions/command_definition_spec.rb
index 21f2c87a755..45b710adf07 100644
--- a/spec/lib/gitlab/quick_actions/command_definition_spec.rb
+++ b/spec/lib/gitlab/quick_actions/command_definition_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::QuickActions::CommandDefinition do
diff --git a/spec/lib/gitlab/quick_actions/dsl_spec.rb b/spec/lib/gitlab/quick_actions/dsl_spec.rb
index 78b9b3804c3..c98c36622f5 100644
--- a/spec/lib/gitlab/quick_actions/dsl_spec.rb
+++ b/spec/lib/gitlab/quick_actions/dsl_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::QuickActions::Dsl do
diff --git a/spec/lib/gitlab/quick_actions/extractor_spec.rb b/spec/lib/gitlab/quick_actions/extractor_spec.rb
index 873bb359d6e..f1acb5b7049 100644
--- a/spec/lib/gitlab/quick_actions/extractor_spec.rb
+++ b/spec/lib/gitlab/quick_actions/extractor_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::QuickActions::Extractor do
diff --git a/spec/lib/gitlab/quick_actions/spend_time_and_date_separator_spec.rb b/spec/lib/gitlab/quick_actions/spend_time_and_date_separator_spec.rb
index 8b58f0b3725..fd149cd1114 100644
--- a/spec/lib/gitlab/quick_actions/spend_time_and_date_separator_spec.rb
+++ b/spec/lib/gitlab/quick_actions/spend_time_and_date_separator_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::QuickActions::SpendTimeAndDateSeparator do
diff --git a/spec/lib/gitlab/quick_actions/substitution_definition_spec.rb b/spec/lib/gitlab/quick_actions/substitution_definition_spec.rb
index 1bb8bc51c96..e4f25bc35a9 100644
--- a/spec/lib/gitlab/quick_actions/substitution_definition_spec.rb
+++ b/spec/lib/gitlab/quick_actions/substitution_definition_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::QuickActions::SubstitutionDefinition do
diff --git a/spec/lib/gitlab/redis/cache_spec.rb b/spec/lib/gitlab/redis/cache_spec.rb
index 5a4f17cfcf6..0718998f981 100644
--- a/spec/lib/gitlab/redis/cache_spec.rb
+++ b/spec/lib/gitlab/redis/cache_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Redis::Cache do
diff --git a/spec/lib/gitlab/redis/queues_spec.rb b/spec/lib/gitlab/redis/queues_spec.rb
index 01ca25635a9..93207b6f469 100644
--- a/spec/lib/gitlab/redis/queues_spec.rb
+++ b/spec/lib/gitlab/redis/queues_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Redis::Queues do
diff --git a/spec/lib/gitlab/redis/shared_state_spec.rb b/spec/lib/gitlab/redis/shared_state_spec.rb
index 24b73745dc5..aa61fd99eb5 100644
--- a/spec/lib/gitlab/redis/shared_state_spec.rb
+++ b/spec/lib/gitlab/redis/shared_state_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Redis::SharedState do
diff --git a/spec/lib/gitlab/redis/wrapper_spec.rb b/spec/lib/gitlab/redis/wrapper_spec.rb
index 0c22a0d62cc..e4cc42130db 100644
--- a/spec/lib/gitlab/redis/wrapper_spec.rb
+++ b/spec/lib/gitlab/redis/wrapper_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Redis::Wrapper do
diff --git a/spec/lib/gitlab/reference_counter_spec.rb b/spec/lib/gitlab/reference_counter_spec.rb
index b2344d1870a..f9361d08faf 100644
--- a/spec/lib/gitlab/reference_counter_spec.rb
+++ b/spec/lib/gitlab/reference_counter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::ReferenceCounter do
diff --git a/spec/lib/gitlab/regex_spec.rb b/spec/lib/gitlab/regex_spec.rb
index ba295386a55..e19210d8fbf 100644
--- a/spec/lib/gitlab/regex_spec.rb
+++ b/spec/lib/gitlab/regex_spec.rb
@@ -1,4 +1,6 @@
 # coding: utf-8
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Regex do
diff --git a/spec/lib/gitlab/repo_path_spec.rb b/spec/lib/gitlab/repo_path_spec.rb
index 8fbda929064..cffd7cc89e7 100644
--- a/spec/lib/gitlab/repo_path_spec.rb
+++ b/spec/lib/gitlab/repo_path_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe ::Gitlab::RepoPath do
diff --git a/spec/lib/gitlab/repository_cache_adapter_spec.rb b/spec/lib/gitlab/repository_cache_adapter_spec.rb
index 04fc24b6205..fd1338b55a6 100644
--- a/spec/lib/gitlab/repository_cache_adapter_spec.rb
+++ b/spec/lib/gitlab/repository_cache_adapter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::RepositoryCacheAdapter do
diff --git a/spec/lib/gitlab/repository_cache_spec.rb b/spec/lib/gitlab/repository_cache_spec.rb
index 741ee12633f..6a684595eb8 100644
--- a/spec/lib/gitlab/repository_cache_spec.rb
+++ b/spec/lib/gitlab/repository_cache_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::RepositoryCache do
diff --git a/spec/lib/gitlab/repository_set_cache_spec.rb b/spec/lib/gitlab/repository_set_cache_spec.rb
index 9695e13d842..87e51f801e5 100644
--- a/spec/lib/gitlab/repository_set_cache_spec.rb
+++ b/spec/lib/gitlab/repository_set_cache_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::RepositorySetCache, :clean_gitlab_redis_cache do
diff --git a/spec/lib/gitlab/request_context_spec.rb b/spec/lib/gitlab/request_context_spec.rb
index 23e45aff1c5..a744f48da1f 100644
--- a/spec/lib/gitlab/request_context_spec.rb
+++ b/spec/lib/gitlab/request_context_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::RequestContext do
diff --git a/spec/lib/gitlab/request_forgery_protection_spec.rb b/spec/lib/gitlab/request_forgery_protection_spec.rb
index 305de613866..b7a3dc16eff 100644
--- a/spec/lib/gitlab/request_forgery_protection_spec.rb
+++ b/spec/lib/gitlab/request_forgery_protection_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::RequestForgeryProtection, :allow_forgery_protection do
diff --git a/spec/lib/gitlab/request_profiler/profile_spec.rb b/spec/lib/gitlab/request_profiler/profile_spec.rb
index b37ee558e1a..a75f3c66156 100644
--- a/spec/lib/gitlab/request_profiler/profile_spec.rb
+++ b/spec/lib/gitlab/request_profiler/profile_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 
 describe Gitlab::RequestProfiler::Profile do
diff --git a/spec/lib/gitlab/request_profiler_spec.rb b/spec/lib/gitlab/request_profiler_spec.rb
index 498c045b6cd..f157189a72d 100644
--- a/spec/lib/gitlab/request_profiler_spec.rb
+++ b/spec/lib/gitlab/request_profiler_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::RequestProfiler do
diff --git a/spec/lib/gitlab/route_map_spec.rb b/spec/lib/gitlab/route_map_spec.rb
index a39c774429e..d5e70b91fb4 100644
--- a/spec/lib/gitlab/route_map_spec.rb
+++ b/spec/lib/gitlab/route_map_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::RouteMap do
diff --git a/spec/lib/gitlab/routing_spec.rb b/spec/lib/gitlab/routing_spec.rb
index 01d5acfc15b..965564cb83b 100644
--- a/spec/lib/gitlab/routing_spec.rb
+++ b/spec/lib/gitlab/routing_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Routing do
diff --git a/spec/lib/gitlab/sanitizers/exif_spec.rb b/spec/lib/gitlab/sanitizers/exif_spec.rb
index bd5f330c7a1..22c5f27dc6d 100644
--- a/spec/lib/gitlab/sanitizers/exif_spec.rb
+++ b/spec/lib/gitlab/sanitizers/exif_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Sanitizers::Exif do
diff --git a/spec/lib/gitlab/sanitizers/svg_spec.rb b/spec/lib/gitlab/sanitizers/svg_spec.rb
index df46a874528..a8c7495376d 100644
--- a/spec/lib/gitlab/sanitizers/svg_spec.rb
+++ b/spec/lib/gitlab/sanitizers/svg_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Sanitizers::SVG do
diff --git a/spec/lib/gitlab/search/found_blob_spec.rb b/spec/lib/gitlab/search/found_blob_spec.rb
index da263bc7523..3496fb29836 100644
--- a/spec/lib/gitlab/search/found_blob_spec.rb
+++ b/spec/lib/gitlab/search/found_blob_spec.rb
@@ -1,4 +1,5 @@
 # coding: utf-8
+# frozen_string_literal: true
 
 require 'spec_helper'
 
@@ -108,7 +109,7 @@ describe Gitlab::Search::FoundBlob do
       end
 
       context 'with ISO-8859-1' do
-        let(:search_result) { "master:encoding/iso8859.txt\x001\x00\xC4\xFC\nmaster:encoding/iso8859.txt\x002\x00\nmaster:encoding/iso8859.txt\x003\x00foo\n".force_encoding(Encoding::ASCII_8BIT) }
+        let(:search_result) { (+"master:encoding/iso8859.txt\x001\x00\xC4\xFC\nmaster:encoding/iso8859.txt\x002\x00\nmaster:encoding/iso8859.txt\x003\x00foo\n").force_encoding(Encoding::ASCII_8BIT) }
 
         it 'returns results as UTF-8' do
           expect(subject.filename).to eq('encoding/iso8859.txt')
diff --git a/spec/lib/gitlab/search/query_spec.rb b/spec/lib/gitlab/search/query_spec.rb
index 2d00428fffa..112e9a59f04 100644
--- a/spec/lib/gitlab/search/query_spec.rb
+++ b/spec/lib/gitlab/search/query_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Search::Query do
diff --git a/spec/lib/gitlab/search_results_spec.rb b/spec/lib/gitlab/search_results_spec.rb
index c287da19343..5621c686b8a 100644
--- a/spec/lib/gitlab/search_results_spec.rb
+++ b/spec/lib/gitlab/search_results_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SearchResults do
diff --git a/spec/lib/gitlab/sentry_spec.rb b/spec/lib/gitlab/sentry_spec.rb
index a48cc0d128a..9c4f3b8f42e 100644
--- a/spec/lib/gitlab/sentry_spec.rb
+++ b/spec/lib/gitlab/sentry_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Sentry do
diff --git a/spec/lib/gitlab/serializer/ci/variables_spec.rb b/spec/lib/gitlab/serializer/ci/variables_spec.rb
index 1d1fd5b0763..900508420c9 100644
--- a/spec/lib/gitlab/serializer/ci/variables_spec.rb
+++ b/spec/lib/gitlab/serializer/ci/variables_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 
 describe Gitlab::Serializer::Ci::Variables do
diff --git a/spec/lib/gitlab/serializer/pagination_spec.rb b/spec/lib/gitlab/serializer/pagination_spec.rb
index c54be78f050..1e7f441f258 100644
--- a/spec/lib/gitlab/serializer/pagination_spec.rb
+++ b/spec/lib/gitlab/serializer/pagination_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Serializer::Pagination do
diff --git a/spec/lib/gitlab/shard_health_cache_spec.rb b/spec/lib/gitlab/shard_health_cache_spec.rb
index e1a69261939..f747849b5e9 100644
--- a/spec/lib/gitlab/shard_health_cache_spec.rb
+++ b/spec/lib/gitlab/shard_health_cache_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::ShardHealthCache, :clean_gitlab_redis_cache do
diff --git a/spec/lib/gitlab/shell_spec.rb b/spec/lib/gitlab/shell_spec.rb
index bce2e754176..0ba16b93ee7 100644
--- a/spec/lib/gitlab/shell_spec.rb
+++ b/spec/lib/gitlab/shell_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'stringio'
 
diff --git a/spec/lib/gitlab/sherlock/collection_spec.rb b/spec/lib/gitlab/sherlock/collection_spec.rb
index 873ed14f804..bdc89c3d3cf 100644
--- a/spec/lib/gitlab/sherlock/collection_spec.rb
+++ b/spec/lib/gitlab/sherlock/collection_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Sherlock::Collection do
diff --git a/spec/lib/gitlab/sherlock/file_sample_spec.rb b/spec/lib/gitlab/sherlock/file_sample_spec.rb
index 394421504e0..b09ba5c62dc 100644
--- a/spec/lib/gitlab/sherlock/file_sample_spec.rb
+++ b/spec/lib/gitlab/sherlock/file_sample_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Sherlock::FileSample do
diff --git a/spec/lib/gitlab/sherlock/line_profiler_spec.rb b/spec/lib/gitlab/sherlock/line_profiler_spec.rb
index f2f8040fa0b..c1997606839 100644
--- a/spec/lib/gitlab/sherlock/line_profiler_spec.rb
+++ b/spec/lib/gitlab/sherlock/line_profiler_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Sherlock::LineProfiler do
diff --git a/spec/lib/gitlab/sherlock/line_sample_spec.rb b/spec/lib/gitlab/sherlock/line_sample_spec.rb
index 5f02f6a3213..b68e8cc0266 100644
--- a/spec/lib/gitlab/sherlock/line_sample_spec.rb
+++ b/spec/lib/gitlab/sherlock/line_sample_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Sherlock::LineSample do
diff --git a/spec/lib/gitlab/sherlock/location_spec.rb b/spec/lib/gitlab/sherlock/location_spec.rb
index b295a624b35..7b40c84c2d1 100644
--- a/spec/lib/gitlab/sherlock/location_spec.rb
+++ b/spec/lib/gitlab/sherlock/location_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Sherlock::Location do
diff --git a/spec/lib/gitlab/sherlock/middleware_spec.rb b/spec/lib/gitlab/sherlock/middleware_spec.rb
index 2016023df06..8d6e362f622 100644
--- a/spec/lib/gitlab/sherlock/middleware_spec.rb
+++ b/spec/lib/gitlab/sherlock/middleware_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Sherlock::Middleware do
diff --git a/spec/lib/gitlab/sherlock/query_spec.rb b/spec/lib/gitlab/sherlock/query_spec.rb
index 426071c7f92..13c7e6f8f8b 100644
--- a/spec/lib/gitlab/sherlock/query_spec.rb
+++ b/spec/lib/gitlab/sherlock/query_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Sherlock::Query do
diff --git a/spec/lib/gitlab/sherlock/transaction_spec.rb b/spec/lib/gitlab/sherlock/transaction_spec.rb
index 4a14dfbec56..2245c3ee8e2 100644
--- a/spec/lib/gitlab/sherlock/transaction_spec.rb
+++ b/spec/lib/gitlab/sherlock/transaction_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Sherlock::Transaction do
diff --git a/spec/lib/gitlab/sidekiq_config_spec.rb b/spec/lib/gitlab/sidekiq_config_spec.rb
index 0c66d764851..1e8ccb447b1 100644
--- a/spec/lib/gitlab/sidekiq_config_spec.rb
+++ b/spec/lib/gitlab/sidekiq_config_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Gitlab::SidekiqConfig do
diff --git a/spec/lib/gitlab/sidekiq_logging/json_formatter_spec.rb b/spec/lib/gitlab/sidekiq_logging/json_formatter_spec.rb
index fed9aeba30c..a2cb38ec5b1 100644
--- a/spec/lib/gitlab/sidekiq_logging/json_formatter_spec.rb
+++ b/spec/lib/gitlab/sidekiq_logging/json_formatter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SidekiqLogging::JSONFormatter do
diff --git a/spec/lib/gitlab/sidekiq_logging/structured_logger_spec.rb b/spec/lib/gitlab/sidekiq_logging/structured_logger_spec.rb
index c09db4af8d8..1b89c094a6b 100644
--- a/spec/lib/gitlab/sidekiq_logging/structured_logger_spec.rb
+++ b/spec/lib/gitlab/sidekiq_logging/structured_logger_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SidekiqLogging::StructuredLogger do
diff --git a/spec/lib/gitlab/sidekiq_middleware/memory_killer_spec.rb b/spec/lib/gitlab/sidekiq_middleware/memory_killer_spec.rb
index 1de9a644610..bf3bc8e1add 100644
--- a/spec/lib/gitlab/sidekiq_middleware/memory_killer_spec.rb
+++ b/spec/lib/gitlab/sidekiq_middleware/memory_killer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SidekiqMiddleware::MemoryKiller do
diff --git a/spec/lib/gitlab/sidekiq_signals_spec.rb b/spec/lib/gitlab/sidekiq_signals_spec.rb
index 77ecd1840d2..10f1bad32cd 100644
--- a/spec/lib/gitlab/sidekiq_signals_spec.rb
+++ b/spec/lib/gitlab/sidekiq_signals_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SidekiqSignals do
diff --git a/spec/lib/gitlab/sidekiq_status/client_middleware_spec.rb b/spec/lib/gitlab/sidekiq_status/client_middleware_spec.rb
index 37d9e1d3e6b..1ca8cea66fc 100644
--- a/spec/lib/gitlab/sidekiq_status/client_middleware_spec.rb
+++ b/spec/lib/gitlab/sidekiq_status/client_middleware_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SidekiqStatus::ClientMiddleware do
diff --git a/spec/lib/gitlab/sidekiq_status/server_middleware_spec.rb b/spec/lib/gitlab/sidekiq_status/server_middleware_spec.rb
index 04e09d3dec8..40bcb49d1d3 100644
--- a/spec/lib/gitlab/sidekiq_status/server_middleware_spec.rb
+++ b/spec/lib/gitlab/sidekiq_status/server_middleware_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SidekiqStatus::ServerMiddleware do
diff --git a/spec/lib/gitlab/sidekiq_status_spec.rb b/spec/lib/gitlab/sidekiq_status_spec.rb
index 884f27b212c..7b5c75b2f3b 100644
--- a/spec/lib/gitlab/sidekiq_status_spec.rb
+++ b/spec/lib/gitlab/sidekiq_status_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SidekiqStatus do
diff --git a/spec/lib/gitlab/sidekiq_versioning/manager_spec.rb b/spec/lib/gitlab/sidekiq_versioning/manager_spec.rb
index 7debf70a16f..2aa7d1fd6d8 100644
--- a/spec/lib/gitlab/sidekiq_versioning/manager_spec.rb
+++ b/spec/lib/gitlab/sidekiq_versioning/manager_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SidekiqVersioning::Manager do
diff --git a/spec/lib/gitlab/sidekiq_versioning_spec.rb b/spec/lib/gitlab/sidekiq_versioning_spec.rb
index fa6d42e730d..dade5961775 100644
--- a/spec/lib/gitlab/sidekiq_versioning_spec.rb
+++ b/spec/lib/gitlab/sidekiq_versioning_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SidekiqVersioning, :sidekiq, :redis do
diff --git a/spec/lib/gitlab/slash_commands/command_spec.rb b/spec/lib/gitlab/slash_commands/command_spec.rb
index eceacac58af..c4ea8cbf2b1 100644
--- a/spec/lib/gitlab/slash_commands/command_spec.rb
+++ b/spec/lib/gitlab/slash_commands/command_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SlashCommands::Command do
diff --git a/spec/lib/gitlab/slash_commands/deploy_spec.rb b/spec/lib/gitlab/slash_commands/deploy_spec.rb
index 25f3e8a0409..93a724d8e12 100644
--- a/spec/lib/gitlab/slash_commands/deploy_spec.rb
+++ b/spec/lib/gitlab/slash_commands/deploy_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SlashCommands::Deploy do
diff --git a/spec/lib/gitlab/slash_commands/issue_move_spec.rb b/spec/lib/gitlab/slash_commands/issue_move_spec.rb
index 9a990e1fad7..962ac3668bc 100644
--- a/spec/lib/gitlab/slash_commands/issue_move_spec.rb
+++ b/spec/lib/gitlab/slash_commands/issue_move_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SlashCommands::IssueMove, service: true do
diff --git a/spec/lib/gitlab/slash_commands/issue_new_spec.rb b/spec/lib/gitlab/slash_commands/issue_new_spec.rb
index 59de11766d8..90f0518a63e 100644
--- a/spec/lib/gitlab/slash_commands/issue_new_spec.rb
+++ b/spec/lib/gitlab/slash_commands/issue_new_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SlashCommands::IssueNew do
diff --git a/spec/lib/gitlab/slash_commands/issue_search_spec.rb b/spec/lib/gitlab/slash_commands/issue_search_spec.rb
index 47787307990..b766a9a1361 100644
--- a/spec/lib/gitlab/slash_commands/issue_search_spec.rb
+++ b/spec/lib/gitlab/slash_commands/issue_search_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SlashCommands::IssueSearch do
diff --git a/spec/lib/gitlab/slash_commands/issue_show_spec.rb b/spec/lib/gitlab/slash_commands/issue_show_spec.rb
index 5c4ba2736ba..e53f79dcd86 100644
--- a/spec/lib/gitlab/slash_commands/issue_show_spec.rb
+++ b/spec/lib/gitlab/slash_commands/issue_show_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SlashCommands::IssueShow do
diff --git a/spec/lib/gitlab/slash_commands/presenters/access_spec.rb b/spec/lib/gitlab/slash_commands/presenters/access_spec.rb
index ef3d217f7be..286fec892e6 100644
--- a/spec/lib/gitlab/slash_commands/presenters/access_spec.rb
+++ b/spec/lib/gitlab/slash_commands/presenters/access_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SlashCommands::Presenters::Access do
diff --git a/spec/lib/gitlab/slash_commands/presenters/deploy_spec.rb b/spec/lib/gitlab/slash_commands/presenters/deploy_spec.rb
index d16d122c64e..9c2e9ab982f 100644
--- a/spec/lib/gitlab/slash_commands/presenters/deploy_spec.rb
+++ b/spec/lib/gitlab/slash_commands/presenters/deploy_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SlashCommands::Presenters::Deploy do
diff --git a/spec/lib/gitlab/slash_commands/presenters/issue_move_spec.rb b/spec/lib/gitlab/slash_commands/presenters/issue_move_spec.rb
index 58c341a284e..56b64d32192 100644
--- a/spec/lib/gitlab/slash_commands/presenters/issue_move_spec.rb
+++ b/spec/lib/gitlab/slash_commands/presenters/issue_move_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SlashCommands::Presenters::IssueMove do
diff --git a/spec/lib/gitlab/slash_commands/presenters/issue_new_spec.rb b/spec/lib/gitlab/slash_commands/presenters/issue_new_spec.rb
index 76e4bad88fd..f926783fbea 100644
--- a/spec/lib/gitlab/slash_commands/presenters/issue_new_spec.rb
+++ b/spec/lib/gitlab/slash_commands/presenters/issue_new_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SlashCommands::Presenters::IssueNew do
diff --git a/spec/lib/gitlab/slash_commands/presenters/issue_search_spec.rb b/spec/lib/gitlab/slash_commands/presenters/issue_search_spec.rb
index 5a7ec0685fe..e1c011133c4 100644
--- a/spec/lib/gitlab/slash_commands/presenters/issue_search_spec.rb
+++ b/spec/lib/gitlab/slash_commands/presenters/issue_search_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SlashCommands::Presenters::IssueSearch do
diff --git a/spec/lib/gitlab/slash_commands/presenters/issue_show_spec.rb b/spec/lib/gitlab/slash_commands/presenters/issue_show_spec.rb
index 8f607d7a9c9..56d6bf1c788 100644
--- a/spec/lib/gitlab/slash_commands/presenters/issue_show_spec.rb
+++ b/spec/lib/gitlab/slash_commands/presenters/issue_show_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SlashCommands::Presenters::IssueShow do
diff --git a/spec/lib/gitlab/snippet_search_results_spec.rb b/spec/lib/gitlab/snippet_search_results_spec.rb
index 35df38f052b..89d290aaa81 100644
--- a/spec/lib/gitlab/snippet_search_results_spec.rb
+++ b/spec/lib/gitlab/snippet_search_results_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SnippetSearchResults do
diff --git a/spec/lib/gitlab/sql/cte_spec.rb b/spec/lib/gitlab/sql/cte_spec.rb
index 5d2164491b5..e6194924f5a 100644
--- a/spec/lib/gitlab/sql/cte_spec.rb
+++ b/spec/lib/gitlab/sql/cte_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SQL::CTE do
diff --git a/spec/lib/gitlab/sql/glob_spec.rb b/spec/lib/gitlab/sql/glob_spec.rb
index 3147b52dcc5..83eed309ecc 100644
--- a/spec/lib/gitlab/sql/glob_spec.rb
+++ b/spec/lib/gitlab/sql/glob_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SQL::Glob do
diff --git a/spec/lib/gitlab/sql/pattern_spec.rb b/spec/lib/gitlab/sql/pattern_spec.rb
index 98838712eae..31944d51b3c 100644
--- a/spec/lib/gitlab/sql/pattern_spec.rb
+++ b/spec/lib/gitlab/sql/pattern_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SQL::Pattern do
diff --git a/spec/lib/gitlab/sql/recursive_cte_spec.rb b/spec/lib/gitlab/sql/recursive_cte_spec.rb
index 407a4d8a247..20e36c224b0 100644
--- a/spec/lib/gitlab/sql/recursive_cte_spec.rb
+++ b/spec/lib/gitlab/sql/recursive_cte_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SQL::RecursiveCTE do
diff --git a/spec/lib/gitlab/sql/union_spec.rb b/spec/lib/gitlab/sql/union_spec.rb
index fe6422c32b6..f8f6da19fa5 100644
--- a/spec/lib/gitlab/sql/union_spec.rb
+++ b/spec/lib/gitlab/sql/union_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SQL::Union do
diff --git a/spec/lib/gitlab/ssh_public_key_spec.rb b/spec/lib/gitlab/ssh_public_key_spec.rb
index a6ea07e8b6d..f8becb0c796 100644
--- a/spec/lib/gitlab/ssh_public_key_spec.rb
+++ b/spec/lib/gitlab/ssh_public_key_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::SSHPublicKey, lib: true do
diff --git a/spec/lib/gitlab/string_placeholder_replacer_spec.rb b/spec/lib/gitlab/string_placeholder_replacer_spec.rb
index 7a03ea4154c..0295bf1265f 100644
--- a/spec/lib/gitlab/string_placeholder_replacer_spec.rb
+++ b/spec/lib/gitlab/string_placeholder_replacer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::StringPlaceholderReplacer do
diff --git a/spec/lib/gitlab/string_range_marker_spec.rb b/spec/lib/gitlab/string_range_marker_spec.rb
index 6bc02459dbd..7ed43db3d10 100644
--- a/spec/lib/gitlab/string_range_marker_spec.rb
+++ b/spec/lib/gitlab/string_range_marker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::StringRangeMarker do
diff --git a/spec/lib/gitlab/string_regex_marker_spec.rb b/spec/lib/gitlab/string_regex_marker_spec.rb
index 37b1298b962..2b19edbe7f9 100644
--- a/spec/lib/gitlab/string_regex_marker_spec.rb
+++ b/spec/lib/gitlab/string_regex_marker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::StringRegexMarker do
diff --git a/spec/lib/gitlab/tcp_checker_spec.rb b/spec/lib/gitlab/tcp_checker_spec.rb
index 4acf0334496..49f04f269ae 100644
--- a/spec/lib/gitlab/tcp_checker_spec.rb
+++ b/spec/lib/gitlab/tcp_checker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::TcpChecker do
diff --git a/spec/lib/gitlab/template/finders/global_template_finder_spec.rb b/spec/lib/gitlab/template/finders/global_template_finder_spec.rb
index c7f58fbd2a5..082ffa855b7 100644
--- a/spec/lib/gitlab/template/finders/global_template_finder_spec.rb
+++ b/spec/lib/gitlab/template/finders/global_template_finder_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Template::Finders::GlobalTemplateFinder do
diff --git a/spec/lib/gitlab/template/finders/repo_template_finders_spec.rb b/spec/lib/gitlab/template/finders/repo_template_finders_spec.rb
index e329d55d837..c8f2a37c5d6 100644
--- a/spec/lib/gitlab/template/finders/repo_template_finders_spec.rb
+++ b/spec/lib/gitlab/template/finders/repo_template_finders_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Template::Finders::RepoTemplateFinder do
diff --git a/spec/lib/gitlab/template/gitignore_template_spec.rb b/spec/lib/gitlab/template/gitignore_template_spec.rb
index 97797f42aaa..e8f632889ad 100644
--- a/spec/lib/gitlab/template/gitignore_template_spec.rb
+++ b/spec/lib/gitlab/template/gitignore_template_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Template::GitignoreTemplate do
diff --git a/spec/lib/gitlab/template/gitlab_ci_yml_template_spec.rb b/spec/lib/gitlab/template/gitlab_ci_yml_template_spec.rb
index 5f0a7e925ca..52e100768a7 100644
--- a/spec/lib/gitlab/template/gitlab_ci_yml_template_spec.rb
+++ b/spec/lib/gitlab/template/gitlab_ci_yml_template_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Template::GitlabCiYmlTemplate do
diff --git a/spec/lib/gitlab/template/issue_template_spec.rb b/spec/lib/gitlab/template/issue_template_spec.rb
index 7098499f996..54e46d3a9ec 100644
--- a/spec/lib/gitlab/template/issue_template_spec.rb
+++ b/spec/lib/gitlab/template/issue_template_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Template::IssueTemplate do
diff --git a/spec/lib/gitlab/template/merge_request_template_spec.rb b/spec/lib/gitlab/template/merge_request_template_spec.rb
index bd7ff64aa8a..bbc184d4dfc 100644
--- a/spec/lib/gitlab/template/merge_request_template_spec.rb
+++ b/spec/lib/gitlab/template/merge_request_template_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Template::MergeRequestTemplate do
diff --git a/spec/lib/gitlab/themes_spec.rb b/spec/lib/gitlab/themes_spec.rb
index a8213988f70..e0278eb9c7f 100644
--- a/spec/lib/gitlab/themes_spec.rb
+++ b/spec/lib/gitlab/themes_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Themes, lib: true do
diff --git a/spec/lib/gitlab/tree_summary_spec.rb b/spec/lib/gitlab/tree_summary_spec.rb
index e22f898dc4c..e15463ed0eb 100644
--- a/spec/lib/gitlab/tree_summary_spec.rb
+++ b/spec/lib/gitlab/tree_summary_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::TreeSummary do
diff --git a/spec/lib/gitlab/untrusted_regexp/ruby_syntax_spec.rb b/spec/lib/gitlab/untrusted_regexp/ruby_syntax_spec.rb
index f1882e03581..68402e64012 100644
--- a/spec/lib/gitlab/untrusted_regexp/ruby_syntax_spec.rb
+++ b/spec/lib/gitlab/untrusted_regexp/ruby_syntax_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 require 'support/shared_examples/malicious_regexp_shared_examples'
 require 'support/helpers/stub_feature_flags'
diff --git a/spec/lib/gitlab/untrusted_regexp_spec.rb b/spec/lib/gitlab/untrusted_regexp_spec.rb
index 9d483f13a5e..4cc21e94a83 100644
--- a/spec/lib/gitlab/untrusted_regexp_spec.rb
+++ b/spec/lib/gitlab/untrusted_regexp_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 require 'support/shared_examples/malicious_regexp_shared_examples'
 
diff --git a/spec/lib/gitlab/uploads_transfer_spec.rb b/spec/lib/gitlab/uploads_transfer_spec.rb
index 4275e7b015b..16560fc8f12 100644
--- a/spec/lib/gitlab/uploads_transfer_spec.rb
+++ b/spec/lib/gitlab/uploads_transfer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::UploadsTransfer do
diff --git a/spec/lib/gitlab/url_blocker_spec.rb b/spec/lib/gitlab/url_blocker_spec.rb
index 45d9022abeb..df8a1f82f81 100644
--- a/spec/lib/gitlab/url_blocker_spec.rb
+++ b/spec/lib/gitlab/url_blocker_spec.rb
@@ -1,4 +1,6 @@
 # coding: utf-8
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::UrlBlocker do
diff --git a/spec/lib/gitlab/url_builder_spec.rb b/spec/lib/gitlab/url_builder_spec.rb
index bbcb92608d8..08d3c638f9e 100644
--- a/spec/lib/gitlab/url_builder_spec.rb
+++ b/spec/lib/gitlab/url_builder_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::UrlBuilder do
diff --git a/spec/lib/gitlab/url_sanitizer_spec.rb b/spec/lib/gitlab/url_sanitizer_spec.rb
index 7242255d535..b39609c594b 100644
--- a/spec/lib/gitlab/url_sanitizer_spec.rb
+++ b/spec/lib/gitlab/url_sanitizer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::UrlSanitizer do
diff --git a/spec/lib/gitlab/user_access_spec.rb b/spec/lib/gitlab/user_access_spec.rb
index 9da06bb40f4..c25bd14fcba 100644
--- a/spec/lib/gitlab/user_access_spec.rb
+++ b/spec/lib/gitlab/user_access_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::UserAccess do
diff --git a/spec/lib/gitlab/utils/deep_size_spec.rb b/spec/lib/gitlab/utils/deep_size_spec.rb
index 1e619a15980..47dfc04f46f 100644
--- a/spec/lib/gitlab/utils/deep_size_spec.rb
+++ b/spec/lib/gitlab/utils/deep_size_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Utils::DeepSize do
diff --git a/spec/lib/gitlab/utils/merge_hash_spec.rb b/spec/lib/gitlab/utils/merge_hash_spec.rb
index 4fa7bb31301..72620e549a9 100644
--- a/spec/lib/gitlab/utils/merge_hash_spec.rb
+++ b/spec/lib/gitlab/utils/merge_hash_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 describe Gitlab::Utils::MergeHash do
   describe '.crush' do
diff --git a/spec/lib/gitlab/utils/override_spec.rb b/spec/lib/gitlab/utils/override_spec.rb
index 9e7c97f8095..5855c4374a9 100644
--- a/spec/lib/gitlab/utils/override_spec.rb
+++ b/spec/lib/gitlab/utils/override_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 
 describe Gitlab::Utils::Override do
diff --git a/spec/lib/gitlab/utils/sanitize_node_link_spec.rb b/spec/lib/gitlab/utils/sanitize_node_link_spec.rb
index 064c2707d06..80b0935a7ed 100644
--- a/spec/lib/gitlab/utils/sanitize_node_link_spec.rb
+++ b/spec/lib/gitlab/utils/sanitize_node_link_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Utils::SanitizeNodeLink do
diff --git a/spec/lib/gitlab/utils/strong_memoize_spec.rb b/spec/lib/gitlab/utils/strong_memoize_spec.rb
index 473f8100771..26baaf873a8 100644
--- a/spec/lib/gitlab/utils/strong_memoize_spec.rb
+++ b/spec/lib/gitlab/utils/strong_memoize_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Utils::StrongMemoize do
diff --git a/spec/lib/gitlab/utils_spec.rb b/spec/lib/gitlab/utils_spec.rb
index 0c20b3aa4c8..890918d4a7c 100644
--- a/spec/lib/gitlab/utils_spec.rb
+++ b/spec/lib/gitlab/utils_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Utils do
diff --git a/spec/lib/gitlab/verify/job_artifacts_spec.rb b/spec/lib/gitlab/verify/job_artifacts_spec.rb
index 6e916a56564..b50ec1528d4 100644
--- a/spec/lib/gitlab/verify/job_artifacts_spec.rb
+++ b/spec/lib/gitlab/verify/job_artifacts_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Verify::JobArtifacts do
diff --git a/spec/lib/gitlab/verify/lfs_objects_spec.rb b/spec/lib/gitlab/verify/lfs_objects_spec.rb
index 2feaedd6f14..c27c9b6efa1 100644
--- a/spec/lib/gitlab/verify/lfs_objects_spec.rb
+++ b/spec/lib/gitlab/verify/lfs_objects_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Verify::LfsObjects do
diff --git a/spec/lib/gitlab/verify/uploads_spec.rb b/spec/lib/gitlab/verify/uploads_spec.rb
index 38c30fab1ba..a3d3f5d46f3 100644
--- a/spec/lib/gitlab/verify/uploads_spec.rb
+++ b/spec/lib/gitlab/verify/uploads_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Verify::Uploads do
diff --git a/spec/lib/gitlab/version_info_spec.rb b/spec/lib/gitlab/version_info_spec.rb
index 30035c79e58..8c14b187410 100644
--- a/spec/lib/gitlab/version_info_spec.rb
+++ b/spec/lib/gitlab/version_info_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe 'Gitlab::VersionInfo' do
diff --git a/spec/lib/gitlab/view/presenter/base_spec.rb b/spec/lib/gitlab/view/presenter/base_spec.rb
index 02c2fd47197..e196ab23482 100644
--- a/spec/lib/gitlab/view/presenter/base_spec.rb
+++ b/spec/lib/gitlab/view/presenter/base_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::View::Presenter::Base do
diff --git a/spec/lib/gitlab/view/presenter/delegated_spec.rb b/spec/lib/gitlab/view/presenter/delegated_spec.rb
index 940a2ce6ebd..0a21cd1358e 100644
--- a/spec/lib/gitlab/view/presenter/delegated_spec.rb
+++ b/spec/lib/gitlab/view/presenter/delegated_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::View::Presenter::Delegated do
diff --git a/spec/lib/gitlab/view/presenter/factory_spec.rb b/spec/lib/gitlab/view/presenter/factory_spec.rb
index 6120bafb2e3..515a1b0a8e4 100644
--- a/spec/lib/gitlab/view/presenter/factory_spec.rb
+++ b/spec/lib/gitlab/view/presenter/factory_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::View::Presenter::Factory do
diff --git a/spec/lib/gitlab/view/presenter/simple_spec.rb b/spec/lib/gitlab/view/presenter/simple_spec.rb
index 1795ed2405b..70e2b170a36 100644
--- a/spec/lib/gitlab/view/presenter/simple_spec.rb
+++ b/spec/lib/gitlab/view/presenter/simple_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::View::Presenter::Simple do
diff --git a/spec/lib/gitlab/visibility_level_spec.rb b/spec/lib/gitlab/visibility_level_spec.rb
index 0a170a157fe..75dc7d8e6d1 100644
--- a/spec/lib/gitlab/visibility_level_spec.rb
+++ b/spec/lib/gitlab/visibility_level_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::VisibilityLevel do
diff --git a/spec/lib/gitlab/wiki_file_finder_spec.rb b/spec/lib/gitlab/wiki_file_finder_spec.rb
index 025d1203dc5..fdd95d5e6e6 100644
--- a/spec/lib/gitlab/wiki_file_finder_spec.rb
+++ b/spec/lib/gitlab/wiki_file_finder_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::WikiFileFinder do
diff --git a/spec/lib/gitlab/workhorse_spec.rb b/spec/lib/gitlab/workhorse_spec.rb
index 451e18ed91b..5c5ff46112f 100644
--- a/spec/lib/gitlab/workhorse_spec.rb
+++ b/spec/lib/gitlab/workhorse_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Workhorse do
diff --git a/spec/lib/gitlab_spec.rb b/spec/lib/gitlab_spec.rb
index c293f58c9cb..cbc5649fc09 100644
--- a/spec/lib/gitlab_spec.rb
+++ b/spec/lib/gitlab_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 
 require_dependency 'gitlab'
diff --git a/spec/lib/google_api/auth_spec.rb b/spec/lib/google_api/auth_spec.rb
index 87a3f43274f..a25004ac385 100644
--- a/spec/lib/google_api/auth_spec.rb
+++ b/spec/lib/google_api/auth_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe GoogleApi::Auth do
diff --git a/spec/lib/google_api/cloud_platform/client_spec.rb b/spec/lib/google_api/cloud_platform/client_spec.rb
index 1fefc947636..c24998d32f8 100644
--- a/spec/lib/google_api/cloud_platform/client_spec.rb
+++ b/spec/lib/google_api/cloud_platform/client_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe GoogleApi::CloudPlatform::Client do
diff --git a/spec/lib/json_web_token/rsa_token_spec.rb b/spec/lib/json_web_token/rsa_token_spec.rb
index a3c54651e80..a127c787e28 100644
--- a/spec/lib/json_web_token/rsa_token_spec.rb
+++ b/spec/lib/json_web_token/rsa_token_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe JSONWebToken::RSAToken do
   let(:rsa_key) do
     OpenSSL::PKey::RSA.new <<-eos.strip_heredoc
diff --git a/spec/lib/json_web_token/token_spec.rb b/spec/lib/json_web_token/token_spec.rb
index d7e7560d962..916d11ce0ed 100644
--- a/spec/lib/json_web_token/token_spec.rb
+++ b/spec/lib/json_web_token/token_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe JSONWebToken::Token do
   let(:token) { described_class.new }
 
diff --git a/spec/lib/mattermost/client_spec.rb b/spec/lib/mattermost/client_spec.rb
index dc11a414717..5fe35eb5f93 100644
--- a/spec/lib/mattermost/client_spec.rb
+++ b/spec/lib/mattermost/client_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Mattermost::Client do
diff --git a/spec/lib/mattermost/command_spec.rb b/spec/lib/mattermost/command_spec.rb
index 7c194749dfb..f8c451a1522 100644
--- a/spec/lib/mattermost/command_spec.rb
+++ b/spec/lib/mattermost/command_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Mattermost::Command do
diff --git a/spec/lib/mattermost/session_spec.rb b/spec/lib/mattermost/session_spec.rb
index 346455067a7..ea12bd76c8d 100644
--- a/spec/lib/mattermost/session_spec.rb
+++ b/spec/lib/mattermost/session_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Mattermost::Session, type: :request do
diff --git a/spec/lib/mattermost/team_spec.rb b/spec/lib/mattermost/team_spec.rb
index 030aa5d06a8..2823dab67c9 100644
--- a/spec/lib/mattermost/team_spec.rb
+++ b/spec/lib/mattermost/team_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Mattermost::Team do
diff --git a/spec/lib/microsoft_teams/activity_spec.rb b/spec/lib/microsoft_teams/activity_spec.rb
index 7890ae2e7b0..3fad2437f3e 100644
--- a/spec/lib/microsoft_teams/activity_spec.rb
+++ b/spec/lib/microsoft_teams/activity_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe MicrosoftTeams::Activity do
diff --git a/spec/lib/microsoft_teams/notifier_spec.rb b/spec/lib/microsoft_teams/notifier_spec.rb
index 2aaa7c24ad8..64ab8d85807 100644
--- a/spec/lib/microsoft_teams/notifier_spec.rb
+++ b/spec/lib/microsoft_teams/notifier_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe MicrosoftTeams::Notifier do
diff --git a/spec/lib/milestone_array_spec.rb b/spec/lib/milestone_array_spec.rb
index df91677b925..375cb87dde6 100644
--- a/spec/lib/milestone_array_spec.rb
+++ b/spec/lib/milestone_array_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe MilestoneArray do
diff --git a/spec/lib/object_storage/direct_upload_spec.rb b/spec/lib/object_storage/direct_upload_spec.rb
index 8ccbd90ddb8..fae0c636bdc 100644
--- a/spec/lib/object_storage/direct_upload_spec.rb
+++ b/spec/lib/object_storage/direct_upload_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe ObjectStorage::DirectUpload do
diff --git a/spec/lib/omni_auth/strategies/jwt_spec.rb b/spec/lib/omni_auth/strategies/jwt_spec.rb
index c1eaf0bb0bf..bdf3ea6be98 100644
--- a/spec/lib/omni_auth/strategies/jwt_spec.rb
+++ b/spec/lib/omni_auth/strategies/jwt_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe OmniAuth::Strategies::Jwt do
diff --git a/spec/lib/rspec_flaky/config_spec.rb b/spec/lib/rspec_flaky/config_spec.rb
index 4a71b1feebd..13b2219267b 100644
--- a/spec/lib/rspec_flaky/config_spec.rb
+++ b/spec/lib/rspec_flaky/config_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe RspecFlaky::Config, :aggregate_failures do
diff --git a/spec/lib/rspec_flaky/example_spec.rb b/spec/lib/rspec_flaky/example_spec.rb
index 5b4fd5ddf3e..4679dd818db 100644
--- a/spec/lib/rspec_flaky/example_spec.rb
+++ b/spec/lib/rspec_flaky/example_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe RspecFlaky::Example do
diff --git a/spec/lib/rspec_flaky/flaky_example_spec.rb b/spec/lib/rspec_flaky/flaky_example_spec.rb
index d19c34bebb3..092bbc781a5 100644
--- a/spec/lib/rspec_flaky/flaky_example_spec.rb
+++ b/spec/lib/rspec_flaky/flaky_example_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe RspecFlaky::FlakyExample, :aggregate_failures do
diff --git a/spec/lib/rspec_flaky/flaky_examples_collection_spec.rb b/spec/lib/rspec_flaky/flaky_examples_collection_spec.rb
index 6731a27ed17..2e224cda61b 100644
--- a/spec/lib/rspec_flaky/flaky_examples_collection_spec.rb
+++ b/spec/lib/rspec_flaky/flaky_examples_collection_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe RspecFlaky::FlakyExamplesCollection, :aggregate_failures do
diff --git a/spec/lib/rspec_flaky/listener_spec.rb b/spec/lib/rspec_flaky/listener_spec.rb
index ef085445081..44b8d99b74f 100644
--- a/spec/lib/rspec_flaky/listener_spec.rb
+++ b/spec/lib/rspec_flaky/listener_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe RspecFlaky::Listener, :aggregate_failures do
diff --git a/spec/lib/rspec_flaky/report_spec.rb b/spec/lib/rspec_flaky/report_spec.rb
index 7d57d99f7e5..6a98a7a4e6b 100644
--- a/spec/lib/rspec_flaky/report_spec.rb
+++ b/spec/lib/rspec_flaky/report_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe RspecFlaky::Report, :aggregate_failures do
diff --git a/spec/lib/safe_zip/entry_spec.rb b/spec/lib/safe_zip/entry_spec.rb
index 115e28c5994..0974f732188 100644
--- a/spec/lib/safe_zip/entry_spec.rb
+++ b/spec/lib/safe_zip/entry_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe SafeZip::Entry do
diff --git a/spec/lib/safe_zip/extract_params_spec.rb b/spec/lib/safe_zip/extract_params_spec.rb
index 85e22cfa495..f66d3de89ee 100644
--- a/spec/lib/safe_zip/extract_params_spec.rb
+++ b/spec/lib/safe_zip/extract_params_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe SafeZip::ExtractParams do
diff --git a/spec/lib/safe_zip/extract_spec.rb b/spec/lib/safe_zip/extract_spec.rb
index b75a8fede00..3b8c64c1c9f 100644
--- a/spec/lib/safe_zip/extract_spec.rb
+++ b/spec/lib/safe_zip/extract_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe SafeZip::Extract do
diff --git a/spec/lib/serializers/json_spec.rb b/spec/lib/serializers/json_spec.rb
index 847a01d186c..a8d82d70e89 100644
--- a/spec/lib/serializers/json_spec.rb
+++ b/spec/lib/serializers/json_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 
 describe Serializers::JSON do
diff --git a/spec/lib/system_check/app/git_user_default_ssh_config_check_spec.rb b/spec/lib/system_check/app/git_user_default_ssh_config_check_spec.rb
index a0fb86345f3..f132f608ab6 100644
--- a/spec/lib/system_check/app/git_user_default_ssh_config_check_spec.rb
+++ b/spec/lib/system_check/app/git_user_default_ssh_config_check_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe SystemCheck::App::GitUserDefaultSSHConfigCheck do
diff --git a/spec/lib/system_check/base_check_spec.rb b/spec/lib/system_check/base_check_spec.rb
index faf8c99e772..ccb7b483bdc 100644
--- a/spec/lib/system_check/base_check_spec.rb
+++ b/spec/lib/system_check/base_check_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe SystemCheck::BaseCheck do
diff --git a/spec/lib/system_check/orphans/namespace_check_spec.rb b/spec/lib/system_check/orphans/namespace_check_spec.rb
index 2a61ff3ad65..f7491e40438 100644
--- a/spec/lib/system_check/orphans/namespace_check_spec.rb
+++ b/spec/lib/system_check/orphans/namespace_check_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'rake_helper'
 
diff --git a/spec/lib/system_check/orphans/repository_check_spec.rb b/spec/lib/system_check/orphans/repository_check_spec.rb
index b0c2267d177..a5e06f30e75 100644
--- a/spec/lib/system_check/orphans/repository_check_spec.rb
+++ b/spec/lib/system_check/orphans/repository_check_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'rake_helper'
 
diff --git a/spec/lib/system_check/simple_executor_spec.rb b/spec/lib/system_check/simple_executor_spec.rb
index e71e9da369d..94094343ec6 100644
--- a/spec/lib/system_check/simple_executor_spec.rb
+++ b/spec/lib/system_check/simple_executor_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'rake_helper'
 
diff --git a/spec/lib/system_check_spec.rb b/spec/lib/system_check_spec.rb
index 4d9e17fa6ec..f3ed6ca31c9 100644
--- a/spec/lib/system_check_spec.rb
+++ b/spec/lib/system_check_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'rake_helper'
 
diff --git a/spec/lib/uploaded_file_spec.rb b/spec/lib/uploaded_file_spec.rb
index a2f5c2e7121..2cb4727bd4b 100644
--- a/spec/lib/uploaded_file_spec.rb
+++ b/spec/lib/uploaded_file_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe UploadedFile do