Show routes defined under assets prefix

Closes #9625

3 files changed, 17 insertions, 1 deletions

diff --git a/actionpack/CHANGELOG.md b/actionpack/CHANGELOG.md
index 3324dfa623..ceca52dcec 100644
--- a/actionpack/CHANGELOG.md
+++ b/actionpack/CHANGELOG.md
@@ -1,3 +1,7 @@
+*   `rake routes` shows routes defined under assets prefix.
+
+    *Ryunosuke SATO*
+
 *   Extend cross-site request forgery (CSRF) protection to GET requests with
     JavaScript responses, protecting apps from cross-origin `<script>` tags.
 
diff --git a/actionpack/lib/action_dispatch/routing/inspector.rb b/actionpack/lib/action_dispatch/routing/inspector.rb
index 03ac42285d..f612e91aef 100644
--- a/actionpack/lib/action_dispatch/routing/inspector.rb
+++ b/actionpack/lib/action_dispatch/routing/inspector.rb
@@ -69,7 +69,7 @@ module ActionDispatch
       end
 
       def internal?
-        controller.to_s =~ %r{\Arails/(info|mailers|welcome)} || path =~ %r{\A#{Rails.application.config.assets.prefix}}
+        controller.to_s =~ %r{\Arails/(info|mailers|welcome)} || path =~ %r{\A#{Rails.application.config.assets.prefix}\z}
       end
 
       def engine?
diff --git a/actionpack/test/dispatch/routing/inspector_test.rb b/actionpack/test/dispatch/routing/inspector_test.rb
index c8038bbd7c..18a52f13a7 100644
--- a/actionpack/test/dispatch/routing/inspector_test.rb
+++ b/actionpack/test/dispatch/routing/inspector_test.rb
@@ -203,6 +203,18 @@ module ActionDispatch
         assert_no_match(/\/sprockets/, output.first)
       end
 
+      def test_rake_routes_shows_route_defined_in_under_assets_prefix
+        output = draw do
+          scope '/sprockets' do
+            get '/foo' => 'foo#bar'
+          end
+        end
+        assert_equal [
+          "Prefix Verb URI Pattern              Controller#Action",
+          "   foo GET  /sprockets/foo(.:format) foo#bar"
+        ], output
+      end
+
       def test_redirect
         output = draw do
           get "/foo"    => redirect("/foo/bar"), :constraints => { :subdomain => "admin" }