1 files changed, 10 insertions, 0 deletions
diff --git a/test/net/imap/test_imap_response_parser.rb b/test/net/imap/test_imap_response_parser.rb
index 6a5a117408..3f26e0b350 100644
--- a/test/net/imap/test_imap_response_parser.rb
+++ b/test/net/imap/test_imap_response_parser.rb
@@ -116,4 +116,14 @@ EOF
 * 1 FETCH (UID 92285  )
 EOF
   end
+
+  def test_msg_att_parse_error
+    parser = Net::IMAP::ResponseParser.new
+    e = assert_raise(Net::IMAP::ResponseParseError) {
+      response = parser.parse(<<EOF.gsub(/\n/, "\r\n").taint)
+* 123 FETCH (UNKNOWN 92285)
+EOF
+    }
+    assert_match(/ for \{123\}/, e.message)
+  end
 end