Add the `method_source` gem to the default Gemfile

Fixes #18473

3 files changed, 15 insertions, 0 deletions

diff --git a/railties/CHANGELOG.md b/railties/CHANGELOG.md
index 3e797e03cb..30b86db8bb 100644
--- a/railties/CHANGELOG.md
+++ b/railties/CHANGELOG.md
@@ -1,3 +1,7 @@
+*   Add the `method_source` gem to the default Gemfile for apps
+
+    *Sean Griffin*
+
 *   Drop old test locations from `rake stats`
     - test/functional
     - test/unit
diff --git a/railties/lib/rails/generators/rails/app/templates/Gemfile b/railties/lib/rails/generators/rails/app/templates/Gemfile
index 3659edcfcd..143673f711 100644
--- a/railties/lib/rails/generators/rails/app/templates/Gemfile
+++ b/railties/lib/rails/generators/rails/app/templates/Gemfile
@@ -36,6 +36,10 @@ group :development, :test do
   # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
   gem 'spring'
 <% end -%>
+
+  # Adds `Method#source` and `Method#comment` to get the source code of a
+  # method from the console
+  gem 'method_source'
 <% end -%>
 end
 
diff --git a/railties/test/generators/app_generator_test.rb b/railties/test/generators/app_generator_test.rb
index 40fd7b77f1..5d270555ed 100644
--- a/railties/test/generators/app_generator_test.rb
+++ b/railties/test/generators/app_generator_test.rb
@@ -409,6 +409,13 @@ class AppGeneratorTest < Rails::Generators::TestCase
     end
   end
 
+  def test_inclusion_of_method_source
+    run_generator
+    assert_file "Gemfile" do |content|
+      assert_gem 'method_source'
+    end
+  end
+
   def test_inclusion_of_doc
     run_generator
     assert_file 'Gemfile', /gem 'sdoc',\s+'~> 0.4.0',\s+group: :doc/