fix: FASS2 状态帧校验 XOR

错误校验和的 100B 上报不再被当成合法状态解析。 Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-26 23:04:40 +08:00
parent 7e2a5697b4
commit 29a06f004f
2 changed files with 36 additions and 5 deletions
@@ -124,6 +124,24 @@ namespace StandardScene.Magnetic.Tests.Protocol
            Assert.Equal((ushort)500, report.Node.Distance);
        }

+        [Fact]
+        public void TryExtractStateFrame_RejectsBadXor()
+        {
+            var frame = Fass2TestFrameBuilder.BuildStateFrame(5, 2, 7, 42);
+            frame[98] ^= 0xFF;
+
+            Assert.False(Fass2Protocol.TryExtractStateFrame(frame, frame.Length, out _));
+        }
+
+        [Fact]
+        public void ParseState_RejectsBadXor()
+        {
+            var frame = Fass2TestFrameBuilder.BuildStateFrame(5, 2, 7, 42);
+            frame[98] ^= 0xFF;
+
+            Assert.Throws<ArgumentException>(() => Fass2Protocol.ParseState(frame));
+        }
+
        [Fact]
        public void NodeMessage_ToBytes_FromBytes_RoundTrip()
        {