diff --git a/test/ch934x_serial_method_channel_test.dart b/test/ch934x_serial_method_channel_test.dart
index e74b841..efa93f3 100644
--- a/test/ch934x_serial_method_channel_test.dart
+++ b/test/ch934x_serial_method_channel_test.dart
@@ -23,8 +23,8 @@ void main() {
   void mockCall(Future<Object?> Function(MethodCall) handler) {
     TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
         .setMockMethodCallHandler(channel, (MethodCall call) async {
-      return handler(call);
-    });
+          return handler(call);
+        });
   }
 
   test('getDeviceList 解析为 Ch934xDeviceInfo 列表', () async {
@@ -102,6 +102,31 @@ void main() {
     expect(written, 0);
   });
 
+  test('setSerialParameter 透传全部串口参数和流控开关', () async {
+    mockCall((call) async {
+      expect(call.method, 'setSerialParameter');
+      expect(call.arguments, <String, Object>{
+        'baud': 115200,
+        'dataBit': 8,
+        'stopBit': 1,
+        'parityBit': 0,
+        'flow': false,
+      });
+      return true;
+    });
+
+    expect(
+      await platform.setSerialParameter(
+        baud: 115200,
+        dataBit: 8,
+        stopBit: 1,
+        parityBit: 0,
+        flow: false,
+      ),
+      isTrue,
+    );
+  });
+
   test('getModemStatus 默认回退到 0', () async {
     mockCall((_) async => null);
     expect(await platform.getModemStatus(), 0);