diff --git a/actionpack/lib/action_controller/test_case.rb b/actionpack/lib/action_controller/test_case.rb
index bc7ba87cb1..b3bd75931b 100644
--- a/actionpack/lib/action_controller/test_case.rb
+++ b/actionpack/lib/action_controller/test_case.rb
@@ -503,7 +503,6 @@ module ActionController
         process_controller_response(action, cookies, xhr)
       end
 
-
       def controller_class_name
         @controller.class.anonymous? ? "anonymous" : @controller.class.controller_path
       end
diff --git a/actionpack/lib/action_dispatch/journey/gtg/builder.rb b/actionpack/lib/action_dispatch/journey/gtg/builder.rb
index cde21fef75..14eb67d093 100644
--- a/actionpack/lib/action_dispatch/journey/gtg/builder.rb
+++ b/actionpack/lib/action_dispatch/journey/gtg/builder.rb
@@ -1,6 +1,5 @@
 # frozen_string_literal: true
 
-
 require "action_dispatch/journey/gtg/transition_table"
 
 module ActionDispatch
diff --git a/actionpack/test/controller/test_case_test.rb b/actionpack/test/controller/test_case_test.rb
index 2a3afbf449..a9b0434dca 100644
--- a/actionpack/test/controller/test_case_test.rb
+++ b/actionpack/test/controller/test_case_test.rb
@@ -247,7 +247,6 @@ XML
     assert_equal JSON.parse(@response.body)["foo"], "bar"
   end
 
-
   def test_body_stream
     params = Hash[:page, { name: "page name" }, "some key", 123]
 
diff --git a/actionview/lib/action_view/renderer/collection_renderer.rb b/actionview/lib/action_view/renderer/collection_renderer.rb
index d9c8361d86..ad4d7d2fc6 100644
--- a/actionview/lib/action_view/renderer/collection_renderer.rb
+++ b/actionview/lib/action_view/renderer/collection_renderer.rb
@@ -106,7 +106,6 @@ module ActionView
         SameCollectionIterator.new(collection, partial, iter_vars)
       end
 
-
       template = find_template(partial, @locals.keys + iter_vars)
 
       layout = if !block && (layout = @options[:layout])
diff --git a/actionview/test/template/asset_tag_helper_test.rb b/actionview/test/template/asset_tag_helper_test.rb
index a2fc33cba8..831455d728 100644
--- a/actionview/test/template/asset_tag_helper_test.rb
+++ b/actionview/test/template/asset_tag_helper_test.rb
@@ -509,7 +509,6 @@ class AssetTagHelperTest < ActionView::TestCase
     assert_dom_equal %(<script src="/javascripts/foo.js"></script>), javascript_include_tag("foo.js")
   end
 
-
   def test_should_set_preload_links
     stylesheet_link_tag("http://example.com/style.css")
     javascript_include_tag("http://example.com/all.js")
diff --git a/actionview/test/template/log_subscriber_test.rb b/actionview/test/template/log_subscriber_test.rb
index 439e6f0b8a..15b21c727a 100644
--- a/actionview/test/template/log_subscriber_test.rb
+++ b/actionview/test/template/log_subscriber_test.rb
@@ -260,7 +260,6 @@ class AVLogSubscriberTest < ActiveSupport::TestCase
     end
   end
 
-
   def test_render_collection_with_implicit_path
     Rails.stub(:root, File.expand_path(FIXTURE_LOAD_PATH)) do
       set_cache_controller
diff --git a/actionview/test/template/render_test.rb b/actionview/test/template/render_test.rb
index 541b0b13b7..445cb9a64a 100644
--- a/actionview/test/template/render_test.rb
+++ b/actionview/test/template/render_test.rb
@@ -72,7 +72,6 @@ module RenderTestCases
     assert_equal "Hello world!", @view.render(template: "test/hello_world")
   end
 
-
   def test_render_file
     assert_equal "Hello world!", assert_deprecated { @view.render(file: "test/hello_world") }
   end
diff --git a/activerecord/lib/active_record/database_configurations.rb b/activerecord/lib/active_record/database_configurations.rb
index 5fb60758d4..15def05ebc 100644
--- a/activerecord/lib/active_record/database_configurations.rb
+++ b/activerecord/lib/active_record/database_configurations.rb
@@ -100,7 +100,6 @@ module ActiveRecord
       first_config && name == first_config.name
     end
 
-
     # Returns the DatabaseConfigurations object as a Hash.
     def to_h
       configurations.inject({}) do |memo, db_config|
diff --git a/activerecord/test/cases/query_cache_test.rb b/activerecord/test/cases/query_cache_test.rb
index 46fbeefe80..51db5d8fda 100644
--- a/activerecord/test/cases/query_cache_test.rb
+++ b/activerecord/test/cases/query_cache_test.rb
@@ -96,7 +96,6 @@ class QueryCacheTest < ActiveRecord::TestCase
     clean_up_connection_handler
   end
 
-
   if Process.respond_to?(:fork) && !in_memory_db?
     def test_query_cache_with_multiple_handlers_and_forked_processes
       ActiveRecord::Base.connection_handlers = {
diff --git a/activerecord/test/cases/relation/where_chain_test.rb b/activerecord/test/cases/relation/where_chain_test.rb
index 94bc06362d..8cec633b39 100644
--- a/activerecord/test/cases/relation/where_chain_test.rb
+++ b/activerecord/test/cases/relation/where_chain_test.rb
@@ -8,7 +8,6 @@ require "models/essay"
 require "models/comment"
 require "models/categorization"
 
-
 module ActiveRecord
   class WhereChainTest < ActiveRecord::TestCase
     fixtures :posts, :comments, :authors, :humans, :essays
diff --git a/activesupport/lib/active_support/core_ext/class/attribute.rb b/activesupport/lib/active_support/core_ext/class/attribute.rb
index a41b19b60e..ec78845159 100644
--- a/activesupport/lib/active_support/core_ext/class/attribute.rb
+++ b/activesupport/lib/active_support/core_ext/class/attribute.rb
@@ -102,7 +102,6 @@ class Class
         end
       RUBY
 
-
       class_methods << <<~RUBY
         silence_redefinition_of_method def #{name}=(value)
           redefine_method(:#{name}) { value } if singleton_class?
diff --git a/activesupport/test/json/encoding_test.rb b/activesupport/test/json/encoding_test.rb
index 30a3b8e5a0..aac572aa87 100644
--- a/activesupport/test/json/encoding_test.rb
+++ b/activesupport/test/json/encoding_test.rb
@@ -164,7 +164,6 @@ class TestJSONEncoding < ActiveSupport::TestCase
     assert_equal({ "foo" => { "foo" => "hello" } }, JSON.parse(json))
   end
 
-
   def test_hash_should_pass_encoding_options_to_children_in_as_json
     person = {
       name: "John",
diff --git a/railties/lib/rails/test_unit/runner.rb b/railties/lib/rails/test_unit/runner.rb
index e46dac2f3e..f5da146711 100644
--- a/railties/lib/rails/test_unit/runner.rb
+++ b/railties/lib/rails/test_unit/runner.rb
@@ -44,7 +44,6 @@ module Rails
         def load_tests(argv)
           patterns = extract_filters(argv)
 
-
           tests = Rake::FileList[patterns.any? ? patterns : default_test_glob]
           tests.exclude(default_test_exclude_glob) if patterns.empty?
 
diff --git a/railties/test/commands/credentials_test.rb b/railties/test/commands/credentials_test.rb
index 974b34836b..51e1c94709 100644
--- a/railties/test/commands/credentials_test.rb
+++ b/railties/test/commands/credentials_test.rb
@@ -178,7 +178,6 @@ class Rails::Command::CredentialsCommandTest < ActiveSupport::TestCase
     assert_match(encrypted_content, run_diff_command(content_path))
   end
 
-
   private
     def run_edit_command(editor: "cat", environment: nil, **options)
       switch_env("EDITOR", editor) do
diff --git a/railties/test/commands/initializers_test.rb b/railties/test/commands/initializers_test.rb
index 793365ef3d..277e8028d2 100644
--- a/railties/test/commands/initializers_test.rb
+++ b/railties/test/commands/initializers_test.rb
@@ -25,7 +25,6 @@ class Rails::Command::InitializersTest < ActiveSupport::TestCase
     assert final_output.include?("set_added_test_module")
   end
 
-
   test "prints out initializers only specified in environment option" do
     add_to_config <<-RUBY
       initializer(:set_added_development_module) { } if Rails.env.development?
diff --git a/railties/test/generators/model_generator_test.rb b/railties/test/generators/model_generator_test.rb
index bd07fb86ff..7d9f9fe7bc 100644
--- a/railties/test/generators/model_generator_test.rb
+++ b/railties/test/generators/model_generator_test.rb
@@ -15,7 +15,6 @@ class ModelGeneratorTest < Rails::Generators::TestCase
     Rails.application.config.active_record.belongs_to_required_by_default = true
   end
 
-
   def teardown
     Rails.application.config.active_record.belongs_to_required_by_default = @old_belongs_to_required_by_default
   end