m3_lightmeter/integration_test/utils/platform_channel_mock.dart

import 'dart:math';

import 'package:flutter/services.dart';
import 'package:flutter_test/flutter_test.dart';

Future<void> sendMockLux([int lux = 100]) async {
  await TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger.handlePlatformMessage(
    "light.eventChannel",
    const StandardMethodCodec().encodeSuccessEnvelope(lux),
    (ByteData? data) {},
  );
}

Future<void> sendMockIncidentEv(double ev) async {
  await TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger.handlePlatformMessage(
    "light.eventChannel",
    const StandardMethodCodec().encodeSuccessEnvelope((2.5 * pow(2, ev)).toInt()),
    (ByteData? data) {},
  );
}