1 files changed, 44 insertions, 0 deletions
diff --git a/actionpack/test/controller/api/with_helpers_test.rb b/actionpack/test/controller/api/with_helpers_test.rb
new file mode 100644
index 0000000000..00179d3505
--- /dev/null
+++ b/actionpack/test/controller/api/with_helpers_test.rb
@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+require "abstract_unit"
+
+module ApiWithHelper
+  def my_helper
+    "helper"
+  end
+end
+
+class WithHelpersController < ActionController::API
+  include ActionController::Helpers
+  helper ApiWithHelper
+
+  def with_helpers
+    render plain: self.class.helpers.my_helper
+  end
+end
+
+class SubclassWithHelpersController < WithHelpersController
+  def with_helpers
+    render plain: self.class.helpers.my_helper
+  end
+end
+
+class WithHelpersTest < ActionController::TestCase
+  tests WithHelpersController
+
+  def test_with_helpers
+    get :with_helpers
+
+    assert_equal "helper", response.body
+  end
+end
+
+class SubclassWithHelpersTest < ActionController::TestCase
+  tests WithHelpersController
+
+  def test_with_helpers
+    get :with_helpers
+
+    assert_equal "helper", response.body
+  end
+end