add a send so `apply` can be called. Fixes #13510

THIS IS A HUGE HACK.  Thor does not allow us to define public methods
without turning them in to "thor tasks".  That means we cannot subclass
the `apply` method and make it public, so we have to make the method
private and call `send` on it.

2 files changed, 33 insertions, 1 deletions

diff --git a/railties/lib/rails/tasks/framework.rake b/railties/lib/rails/tasks/framework.rake
index e669315934..94e8f83e86 100644
--- a/railties/lib/rails/tasks/framework.rake
+++ b/railties/lib/rails/tasks/framework.rake
@@ -10,7 +10,7 @@ namespace :rails do
     require 'rails/generators'
     require 'rails/generators/rails/app/app_generator'
     generator = Rails::Generators::AppGenerator.new [Rails.root], {}, destination_root: Rails.root
-    generator.apply template, verbose: false
+    generator.send :apply, template, verbose: false
   end
 
   namespace :templates do
diff --git a/railties/test/application/rake/templates_test.rb b/railties/test/application/rake/templates_test.rb
new file mode 100644
index 0000000000..1fca80debd
--- /dev/null
+++ b/railties/test/application/rake/templates_test.rb
@@ -0,0 +1,32 @@
+require "isolation/abstract_unit"
+
+module ApplicationTests
+  module RakeTests
+    class TemplatesTest < ActiveSupport::TestCase
+      include ActiveSupport::Testing::Isolation
+
+      def setup
+        build_app
+        require "rails/all"
+        super
+      end
+
+      def teardown
+        super
+        teardown_app
+      end
+
+      def test_rake_template
+        Dir.chdir(app_path) do
+          cmd = "bundle exec rake rails:template LOCATION=foo"
+          r,w = IO.pipe
+          Process.waitpid Process.spawn(cmd, out: w, err: w)
+          w.close
+          assert_match(/Could not find.*foo/, r.read)
+          r.close
+        end
+      end
+    end
+  end
+end
+