1 files changed, 10 insertions, 0 deletions
diff --git a/activesupport/test/deprecation_test.rb b/activesupport/test/deprecation_test.rb
index ebfa405947..27e9573ce2 100644
--- a/activesupport/test/deprecation_test.rb
+++ b/activesupport/test/deprecation_test.rb
@@ -24,6 +24,11 @@ class Deprecatee
   def d; end
   def e; end
   deprecate :a, :b, :c => :e, :d => "you now need to do something extra for this one"
+
+  module B
+    C = 1
+  end
+  A = ActiveSupport::Deprecation::DeprecatedConstantProxy.new('Deprecatee::A', 'Deprecatee::B::C')
 end
 
 
@@ -83,6 +88,11 @@ class DeprecationTest < Test::Unit::TestCase
     assert_not_deprecated { assert_equal @dtc.request.inspect, @dtc.old_request.inspect }
   end
 
+  def test_deprecated_constant_proxy
+    assert_not_deprecated { Deprecatee::B::C }
+    assert_deprecated('Deprecatee::A') { assert_equal Deprecatee::B::C, Deprecatee::A }
+  end
+
   def test_assert_deprecation_without_match
     assert_deprecated do
       @dtc.partially