1 files changed, 13 insertions, 0 deletions
diff --git a/test/net/smtp/test_smtp.rb b/test/net/smtp/test_smtp.rb
index 0b8d657559..748b20d65b 100644
--- a/test/net/smtp/test_smtp.rb
+++ b/test/net/smtp/test_smtp.rb
@@ -21,6 +21,19 @@ module Net
       end
     end
 
+    def test_critical
+      smtp = Net::SMTP.new 'localhost', 25
+
+      assert_raises RuntimeError do
+        smtp.send :critical do
+          raise 'fail on purpose'
+        end
+      end
+
+      assert_kind_of Net::SMTP::Response, smtp.send(:critical),
+                     '[Bug #9125]'
+    end
+
     def test_esmtp
       smtp = Net::SMTP.new 'localhost', 25
       assert smtp.esmtp