fix: set unique sequence numbers on outgoing messages

pyproject.toml

@@ -45,6 +45,7 @@ ruff = "*"
 codespell = "*"
 pyshark = "^0.6"
 aioresponses = "^0.7.7"
+freezegun = "^1.5.1"
 
 [tool.semantic_release]
 branch = "main"

roborock/roborock_message.py

@@ -3,7 +3,7 @@
 import json
 import math
 import time
-from dataclasses import dataclass
+from dataclasses import dataclass, field
 
 from roborock import RoborockEnum
 from roborock.util import get_next_int
@@ -155,10 +155,10 @@ class MessageRetry:
 class RoborockMessage:
     protocol: RoborockMessageProtocol
     payload: bytes | None = None
-    seq: int = get_next_int(100000, 999999)
+    seq: int = field(default_factory=lambda: get_next_int(100000, 999999))
     version: bytes = b"1.0"
-    random: int = get_next_int(10000, 99999)
-    timestamp: int = math.floor(time.time())
+    random: int = field(default_factory=lambda: get_next_int(10000, 99999))
+    timestamp: int = field(default_factory=lambda: math.floor(time.time()))
     message_retry: MessageRetry | None = None
 
     def get_request_id(self) -> int | None:

tests/test_roborock_message.py

@@ -0,0 +1,29 @@
+import json
+
+from freezegun import freeze_time
+
+from roborock.roborock_message import RoborockMessage, RoborockMessageProtocol
+
+
+def test_roborock_message() -> None:
+    """Test the RoborockMessage class is initialized."""
+    with freeze_time("2025-01-20T12:00:00"):
+        message1 = RoborockMessage(
+            protocol=RoborockMessageProtocol.RPC_REQUEST,
+            payload=json.dumps({"dps": {"101": json.dumps({"id": 4321})}}).encode(),
+            message_retry=None,
+        )
+        assert message1.get_request_id() == 4321
+
+    with freeze_time("2025-01-20T11:00:00"):  # Back in time 1hr to test timestamp
+        message2 = RoborockMessage(
+            protocol=RoborockMessageProtocol.RPC_RESPONSE,
+            payload=json.dumps({"dps": {"94": json.dumps({"id": 444}), "102": json.dumps({"id": 333})}}).encode(),
+            message_retry=None,
+        )
+        assert message2.get_request_id() == 333
+
+    # Ensure the sequence, random numbers, etc are initialized properly
+    assert message1.seq != message2.seq
+    assert message1.random != message2.random
+    assert message1.timestamp > message2.timestamp