1 files changed, 20 insertions, 0 deletions
diff --git a/activesupport/test/array_inquirer_test.rb b/activesupport/test/array_inquirer_test.rb
index 4d3f5b001c..5b2bc82905 100644
--- a/activesupport/test/array_inquirer_test.rb
+++ b/activesupport/test/array_inquirer_test.rb
@@ -38,4 +38,24 @@ class ArrayInquirerTest < ActiveSupport::TestCase
     assert_instance_of ActiveSupport::ArrayInquirer, result
     assert_equal @array_inquirer, result
   end
+
+  def test_respond_to_fallback_to_array_respond_to
+    Array.class_eval do
+      def respond_to_missing?(name, include_private = false)
+        (name == :foo) || super
+      end
+    end
+    arr = ActiveSupport::ArrayInquirer.new([:x])
+
+    assert_respond_to arr, :can_you_hear_me?
+    assert_respond_to arr, :foo
+    assert_not_respond_to arr, :nope
+  ensure
+    Array.class_eval do
+      undef_method :respond_to_missing?
+      def respond_to_missing?(name, include_private = false)
+        super
+      end
+    end
+  end
 end