// Exercise the pinned Android protocol without constructing connectivity/jobs.
// ignore: implementation_imports
import 'package:background_downloader/src/permissions.dart';
import 'package:flutter/services.dart';
import 'package:flutter_test/flutter_test.dart';

void main() {
  TestWidgetsFlutterBinding.ensureInitialized();
  const channel = MethodChannel('com.bbflight.background_downloader');
  final messenger =
      TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger;

  tearDown(() => messenger.setMockMethodCallHandler(channel, null));

  test(
    'failed permission dispatch releases slot for the next request',
    () async {
      final service = AndroidPermissionsService();
      var calls = 0;
      messenger.setMockMethodCallHandler(channel, (call) async {
        if (++calls == 1) {
          throw PlatformException(
            code: 'activity_detached',
            message: 'No activity',
          );
        }
        service.onPermissionRequestResult(PermissionStatus.granted);
        return true;
      });
      await expectLater(
        service.request(PermissionType.notifications),
        throwsA(isA<PlatformException>()),
      );
      expect(
        await service.request(PermissionType.notifications),
        PermissionStatus.granted,
      );
      expect(calls, 2);
    },
  );

  test(
    'notification result preceding native request reply completes request',
    () async {
      final service = AndroidPermissionsService();
      messenger.setMockMethodCallHandler(channel, (call) async {
        expect(call.method, 'requestPermission');
        expect(call.arguments, PermissionType.notifications.index);
        // Android may deliver its activity callback before the method reply.
        service.onPermissionRequestResult(PermissionStatus.denied);
        return true;
      });
      expect(
        await service.request(PermissionType.notifications),
        PermissionStatus.denied,
      );
      expect(service.permissionStatusCompleter, isNull);
    },
  );
}