ch34/test/ch34_test.dart

import 'dart:typed_data';

import 'package:flutter_test/flutter_test.dart';
import 'package:ch34/ch34.dart';
import 'package:ch34/src/ch34_method_channel.dart';
import 'package:plugin_platform_interface/plugin_platform_interface.dart';

class MockCh34Platform
    with MockPlatformInterfaceMixin
    implements Ch34Platform {

  @override
  Future<String?> getPlatformVersion() => Future.value('42');

  @override
  Future<List<UsbDeviceInfo>> enumDevice() => Future.value([]);

  @override
  Future<String?> getChipType(String deviceName) => Future.value('CH340');

  @override
  Future<bool> openDevice(String deviceName) => Future.value(true);

  @override
  Future<bool> requestPermission(String deviceName) => Future.value(true);

  @override
  void setUsbStateListener(void Function(String, bool) onStateChanged) {}

  @override
  void removeUsbStateListener() {}

  @override
  Future<int> getSerialCount(String deviceName) => Future.value(1);

  @override
  Future<int> getSerialBaud(String deviceName, int serialNumber) =>
      Future.value(115200);

  @override
  Future<ChipMasterFrequency> getChipMasterFrequency(String deviceName) =>
      Future.value(const ChipMasterFrequency(
        frequency: 12000000,
        switchEnable: false,
        coStatus: 0,
      ));

  @override
  Future<bool> enableSerial(String deviceName, int serialNumber, bool enable) =>
      Future.value(true);

  @override
  Future<bool> setSerialParameter(
    String deviceName,
    int serialNumber,
    SerialParameter parameter,
  ) => Future.value(true);

  @override
  Future<int> writeData(
    String deviceName,
    int serialNumber,
    Uint8List data, {
    int timeout = 0,
  }) => Future.value(data.length);

  @override
  Future<void> asyncWriteData(
    String deviceName,
    int serialNumber,
    Uint8List data,
  ) => Future.value();

  @override
  Future<Uint8List> readData(String deviceName, int serialNumber) =>
      Future.value(Uint8List(0));

  @override
  Future<Uint8List> readDataWithTimeout(
    String deviceName,
    int serialNumber,
    int vTime,
    int vMin,
  ) => Future.value(Uint8List(0));

  @override
  Future<void> registerDataCallback(
    String deviceName,
    int serialNumber,
    void Function(Uint8List) onData,
  ) => Future.value();

  @override
  void removeDataCallback(String deviceName) {}

  @override
  Future<bool> isConnected(String deviceName) => Future.value(true);

  @override
  Future<List<String>> getConnectedDevices() => Future.value([]);

  @override
  Future<void> disconnect(String deviceName) => Future.value();

  @override
  Future<void> close() => Future.value();

  @override
  Future<bool> isSupportGpio(String deviceName) => Future.value(false);

  @override
  Future<int> queryGpioCount(String deviceName) => Future.value(0);

  @override
  Future<GpioStatus> queryGpioStatus(String deviceName, int gpioIndex) =>
      throw const Ch34Exception('Not supported');

  @override
  Future<List<GpioStatus>> queryAllGpioStatus(String deviceName) =>
      Future.value([]);

  @override
  Future<bool> enableGpio(
    String deviceName,
    int gpioIndex,
    bool enable,
    GpioDirection direction,
  ) => Future.value(false);

  @override
  Future<bool> setGpioVal(
    String deviceName,
    int gpioIndex,
    GpioValue value,
  ) => Future.value(false);

  @override
  Future<GpioValue> getGpioVal(String deviceName, int gpioIndex) =>
      Future.value(GpioValue.low);

  @override
  Future<bool> setDtr(String deviceName, int serialNumber, bool valid) =>
      Future.value(true);

  @override
  Future<bool> setRts(String deviceName, int serialNumber, bool valid) =>
      Future.value(true);

  @override
  Future<bool> setBreakSignal(
      String deviceName, int serialNumber, bool valid) =>
      Future.value(true);

  @override
  Future<void> registerModemStatusCallback(
    String deviceName,
    void Function(ModemStatus) onModemStatus,
  ) => Future.value();

  @override
  void removeModemStatusCallback(String deviceName) {}

  @override
  Future<int> querySerialErrorCount(
    String deviceName,
    int serialNumber,
    SerialErrorType errorType,
  ) => Future.value(0);

  @override
  Future<void> setReadTimeout(int timeout) => Future.value();

  @override
  Future<void> addNewHardware(int vid, int pid, String chipType) => Future.value();

  @override
  Future<void> setDebug(bool enabled) => Future.value();

  @override
  Future<bool> isDebugMode() => Future.value(false);
}

void main() {
  MethodChannelCh34.registerDefault();
  final Ch34Platform initialPlatform = Ch34Platform.instance;

  test('$MethodChannelCh34 is the default instance', () {
    expect(initialPlatform, isInstanceOf<MethodChannelCh34>());
  });

  test('getPlatformVersion', () async {
    MockCh34Platform fakePlatform = MockCh34Platform();
    Ch34Platform.instance = fakePlatform;

    expect(await Ch34Manager.getPlatformVersion(), '42');
  });

  test('enumDevice returns empty list', () async {
    MockCh34Platform fakePlatform = MockCh34Platform();
    Ch34Platform.instance = fakePlatform;

    final devices = await Ch34Manager.enumDevice();
    expect(devices, isEmpty);
  });
}