1 files changed, 40 insertions, 3 deletions
diff --git a/actionpack/test/dispatch/routing_test.rb b/actionpack/test/dispatch/routing_test.rb
index 44f902c163..4222eb4eb7 100644
--- a/actionpack/test/dispatch/routing_test.rb
+++ b/actionpack/test/dispatch/routing_test.rb
@@ -3313,7 +3313,7 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
     end
 
     get "/search"
-    assert !@request.params[:action].frozen?
+    assert_not_predicate @request.params[:action], :frozen?
   end
 
   def test_multiple_positional_args_with_the_same_name
@@ -4225,7 +4225,7 @@ class TestGlobRoutingMapper < ActionDispatch::IntegrationTest
     end
   end
 
-  #include Routes.url_helpers
+  # include Routes.url_helpers
   APP = build_app Routes
   def app; APP end
 
@@ -4267,7 +4267,7 @@ class TestOptimizedNamedRoutes < ActionDispatch::IntegrationTest
   def app; APP end
 
   test "enabled when not mounted and default_url_options is empty" do
-    assert Routes.url_helpers.optimize_routes_generation?
+    assert_predicate Routes.url_helpers, :optimize_routes_generation?
   end
 
   test "named route called as singleton method" do
@@ -5057,3 +5057,40 @@ class TestRecognizePath < ActionDispatch::IntegrationTest
       Routes.recognize_path(*args)
     end
 end
+
+class TestRelativeUrlRootGeneration < ActionDispatch::IntegrationTest
+  config = ActionDispatch::Routing::RouteSet::Config.new("/blog", false)
+
+  stub_controllers(config) do |routes|
+    Routes = routes
+
+    routes.draw do
+      get "/", to: "posts#index", as: :posts
+      get "/:id", to: "posts#show", as: :post
+    end
+  end
+
+  include Routes.url_helpers
+
+  APP = build_app Routes
+
+  def app
+    APP
+  end
+
+  def test_url_helpers
+    assert_equal "/blog/", posts_path({})
+    assert_equal "/blog/", Routes.url_helpers.posts_path({})
+
+    assert_equal "/blog/1", post_path(id: "1")
+    assert_equal "/blog/1", Routes.url_helpers.post_path(id: "1")
+  end
+
+  def test_optimized_url_helpers
+    assert_equal "/blog/", posts_path
+    assert_equal "/blog/", Routes.url_helpers.posts_path
+
+    assert_equal "/blog/1", post_path("1")
+    assert_equal "/blog/1", Routes.url_helpers.post_path("1")
+  end
+end