revert to needing both ECUs to match to reduce false positives, test

selfdrive/car/hyundai/values.py

@@ -449,9 +449,8 @@ FW_QUERY_CONFIG = FwQueryConfig(
     (Ecu.hvac, 0x7b3, None),         # HVAC Control Assembly
     (Ecu.cornerRadar, 0x7b7, None),
   ],
+  # Custom fuzzy fingerprinting config using platform codes + FW dates:
   fuzzy_get_platform_codes=get_platform_codes,
-  # Just one exclusive platform code match from radar or camera is enough
-  fuzzy_min_match_count=1,
   # Hyundai works best with camera and radar (which have standardized platform codes)
   fuzzy_ecus=[Ecu.fwdRadar, Ecu.fwdCamera],
 )

selfdrive/car/tests/test_fw_fingerprint.py

@@ -131,10 +131,12 @@ class TestFwFingerprint(TestFwFingerprintBase):
     for brand, config in FW_QUERY_CONFIGS.items():
       with self.subTest(brand=brand):
         if config.fuzzy_get_platform_codes is None:
-          self.assertEqual(config.fuzzy_min_match_count, 2, "Cannot override minimum match count without full config")
           self.assertEqual(len(config.fuzzy_ecus), 0, "Cannot specify fuzzy ECUs without full config")
+          self.assertEqual(config.fuzzy_min_match_count, 2, "Cannot override minimum match count without full config")
         else:
           self.assertGreater(len(config.fuzzy_ecus), 0, "Need to specify fuzzy ECUs")
+          self.assertEqual(config.fuzzy_min_match_count, len(config.fuzzy_ecus),
+                           "Fuzzy ECU match count must equal number of fuzzy ECUs")
 
           # Assert every supported ECU FW version returns one platform code
           for fw_by_addr in VERSIONS[brand].values():