1 files changed, 18 insertions, 0 deletions
diff --git a/actionpack/test/controller/action_pack_assertions_test.rb b/actionpack/test/controller/action_pack_assertions_test.rb
index 1eb9610d04..b1006f82be 100644
--- a/actionpack/test/controller/action_pack_assertions_test.rb
+++ b/actionpack/test/controller/action_pack_assertions_test.rb
@@ -124,6 +124,15 @@ class ActionPackAssertionsController < ActionController::Base
   def rescue_action(e) raise; end
 end
 
+# Used to test that assert_response includes the exception message
+# in the failure message when an action raises and assert_response
+# is expecting something other than an error.
+class AssertResponseWithUnexpectedErrorController < ActionController::Base
+  def index
+    raise 'FAIL'
+  end
+end
+
 module Admin
   class InnerModuleController < ActionController::Base
     def index
@@ -465,6 +474,15 @@ class ActionPackAssertionsControllerTest < Test::Unit::TestCase
     rescue Test::Unit::AssertionFailedError => e
     end
   end
+
+  def test_assert_response_uses_exception_message
+    @controller = AssertResponseWithUnexpectedErrorController.new
+    get :index
+    assert_response :success
+    flunk 'Expected non-success response'
+  rescue Test::Unit::AssertionFailedError => e
+    assert e.message.include?('FAIL')
+  end
 end
 
 class ActionPackHeaderTest < Test::Unit::TestCase