diff --git a/tests/test_os.yaml b/tests/test_os.yaml
index 38ed3005..cfdb8af5 100644
--- a/tests/test_os.yaml
+++ b/tests/test_os.yaml
@@ -3369,3 +3369,9 @@ test_cases:
     patch: 
     patch_minor:
 
+  - user_agent_string: 'Mozilla/5.0 (TAS-AL00 Build/HUAWEITAS-AL00; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/97.0.4692.98 Mobile Safari/537.36 T7/13.76 BDOS/1.0 (HarmonyOS 3.0.0) SP-engine/3.17.0 baiduboxapp/13.76.0.10 (Baidu; P1 12) NABar/1.0'
+    family: 'Harmony'
+    major: '3'
+    minor: '0'
+    patch: '0'
+    patch_minor: