Add web serial support and USB tests

2026-07-01 14:40:32 +10:00 · 2026-03-02 00:27:49 -05:00
parent 22a53439b1
commit c23a1da430
10 changed files with 997 additions and 331 deletions
@@ -0,0 +1,84 @@
+import 'dart:typed_data';
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:meshcore_open/services/usb_serial_frame_codec.dart';
+
+void main() {
+  test('wrapUsbSerialTxFrame prefixes tx header and payload length', () {
+    final packet = wrapUsbSerialTxFrame(Uint8List.fromList(<int>[0x16, 0x03]));
+
+    expect(
+      packet,
+      orderedEquals(<int>[usbSerialTxFrameStart, 0x02, 0x00, 0x16, 0x03]),
+    );
+  });
+
+  test('UsbSerialFrameDecoder buffers partial frames until complete', () {
+    final decoder = UsbSerialFrameDecoder();
+
+    final firstChunk = decoder.ingest(
+      Uint8List.fromList(<int>[usbSerialRxFrameStart, 0x03]),
+    );
+    final secondChunk = decoder.ingest(
+      Uint8List.fromList(<int>[0x00, 0x05, 0x06, 0x07]),
+    );
+
+    expect(firstChunk, isEmpty);
+    expect(secondChunk, hasLength(1));
+    expect(secondChunk.single.isRxFrame, isTrue);
+    expect(secondChunk.single.payload, orderedEquals(<int>[0x05, 0x06, 0x07]));
+  });
+
+  test(
+    'UsbSerialFrameDecoder drops leading noise and parses multiple frames',
+    () {
+      final decoder = UsbSerialFrameDecoder();
+
+      final packets = decoder.ingest(
+        Uint8List.fromList(<int>[
+          0x00,
+          0x01,
+          usbSerialRxFrameStart,
+          0x01,
+          0x00,
+          0x55,
+          usbSerialRxFrameStart,
+          0x02,
+          0x00,
+          0x66,
+          0x77,
+        ]),
+      );
+
+      expect(packets, hasLength(2));
+      expect(packets[0].payload, orderedEquals(<int>[0x55]));
+      expect(packets[1].payload, orderedEquals(<int>[0x66, 0x77]));
+    },
+  );
+
+  test(
+    'UsbSerialFrameDecoder preserves tx packets so caller can ignore them',
+    () {
+      final decoder = UsbSerialFrameDecoder();
+
+      final packets = decoder.ingest(
+        Uint8List.fromList(<int>[
+          usbSerialTxFrameStart,
+          0x01,
+          0x00,
+          0x22,
+          usbSerialRxFrameStart,
+          0x01,
+          0x00,
+          0x33,
+        ]),
+      );
+
+      expect(packets, hasLength(2));
+      expect(packets[0].isRxFrame, isFalse);
+      expect(packets[0].payload, orderedEquals(<int>[0x22]));
+      expect(packets[1].isRxFrame, isTrue);
+      expect(packets[1].payload, orderedEquals(<int>[0x33]));
+    },
+  );
+}