From 9649b65d4591b276f2f648cae244250528370bef Mon Sep 17 00:00:00 2001
From: Shengming Yuan <11619780+ssysm@users.noreply.github.com>
Date: Tue, 29 Jul 2025 12:31:59 -0400
Subject: [PATCH] Test: ELM327 GM camera diagnostic address with malformed
 length (#2583)

test GM camera diagnostic address with malformed length
---
 opendbc/safety/tests/test_elm327.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/opendbc/safety/tests/test_elm327.py b/opendbc/safety/tests/test_elm327.py
index a499a051..eb703e16 100755
--- a/opendbc/safety/tests/test_elm327.py
+++ b/opendbc/safety/tests/test_elm327.py
@@ -40,6 +40,9 @@ class TestElm327(TestDefaultRxHookBase):
       should_tx = (byte >> 4) <= 3
       self.assertEqual(should_tx, self._tx(common.make_msg(0, GM_CAMERA_DIAG_ADDR, dat=bytes([byte] * 8))))
 
+    # test GM camera diagnostic address with malformed length
+    self.assertEqual(False, self._tx(common.make_msg(0, GM_CAMERA_DIAG_ADDR, dat=bytes([0x00] * 7))))
+
   def test_tx_hook_on_wrong_safety_mode(self):
     # No point, since we allow many diagnostic addresses
     pass