fix: prevent tdengine raw frame overwrite

tools/test_tdengine_smoke.py

@@ -0,0 +1,35 @@
+import unittest
+
+from tools import tdengine_smoke
+
+
+class TdengineSmokeTest(unittest.TestCase):
+    def test_sql_literal_escapes_single_quotes(self):
+        self.assertEqual(tdengine_smoke.sql_literal("VIN'001"), "'VIN''001'")
+
+    def test_raw_frame_count_sql_filters_by_protocol_vehicle_and_raw_uri(self):
+        sql = tdengine_smoke.raw_frame_count_sql(
+            protocol="JT808",
+            vehicle_key="jt808:13079962000",
+            raw_uri="archive://2026/06/29/JT808/frame.bin",
+        )
+
+        self.assertEqual(
+            sql,
+            "SELECT COUNT(*) FROM raw_frames WHERE protocol = 'JT808' "
+            "AND vehicle_key = 'jt808:13079962000' "
+            "AND raw_uri = 'archive://2026/06/29/JT808/frame.bin'",
+        )
+
+    def test_raw_frame_count_sql_requires_at_least_one_identity_or_raw_uri_filter(self):
+        with self.assertRaises(ValueError):
+            tdengine_smoke.raw_frame_count_sql(protocol="GB32960")
+
+    def test_count_from_response_reads_first_cell(self):
+        response = {"code": 0, "data": [[3]], "rows": 1}
+
+        self.assertEqual(tdengine_smoke.count_from_response(response), 3)
+
+
+if __name__ == "__main__":
+    unittest.main()