test: add jt808 e2e smoke verifier

tools/test_jt808_e2e_smoke.py

@@ -0,0 +1,38 @@
+import pathlib
+import unittest
+
+from tools import jt808_e2e_smoke as smoke
+
+
+class Jt808E2ESmokeTest(unittest.TestCase):
+    def test_build_frame_adds_boundaries_and_valid_checksum(self):
+        body = smoke.build_location_body(smoke.parse_event_time("2024-01-02T03:04:05"))
+
+        frame = smoke.build_frame(0x0200, "13079961234", 1, body)
+
+        self.assertEqual(frame[0], 0x7E)
+        self.assertEqual(frame[-1], 0x7E)
+        unescaped = smoke.unescape_payload(frame[1:-1])
+        self.assertEqual(smoke.bcc(unescaped), 0)
+
+    def test_next_page_params_include_cursor(self):
+        params = smoke.next_page_params(
+            {"phone": "13079961234", "limit": 1},
+            {"nextCursor": {"ts": "2024-01-01T19:04:05Z", "id": "frame-1"}},
+        )
+
+        self.assertEqual(params["cursorTs"], "2024-01-01T19:04:05Z")
+        self.assertEqual(params["cursorId"], "frame-1")
+        self.assertEqual(params["phone"], "13079961234")
+
+    def test_archive_path_maps_archive_uri_to_root(self):
+        path = smoke.archive_path(
+            pathlib.Path("/tmp/archive"),
+            "archive://2026/06/29/JT808/unknown/frame.bin",
+        )
+
+        self.assertEqual(path, pathlib.Path("/tmp/archive/2026/06/29/JT808/unknown/frame.bin"))
+
+
+if __name__ == "__main__":
+    unittest.main()