Buat use case endpoint ping

Sekalian buat unit testnya.

Author: CoderJava

lib/feature/domain/usecase/ping/ping.dart

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+import 'package:dipantau_desktop_client/core/error/failure.dart';
+import 'package:dipantau_desktop_client/core/usecase/usecase.dart';
+import 'package:dipantau_desktop_client/feature/data/model/general/general_response.dart';
+import 'package:dipantau_desktop_client/feature/domain/repository/general/general_repository.dart';
+
+class Ping implements UseCaseRecords<GeneralResponse, NoParams> {
+  final GeneralRepository repository;
+
+  Ping({required this.repository});
+
+  @override
+  Future<({Failure? failure, GeneralResponse? response})> call(NoParams params) {
+    return repository.ping();
+  }
+}

test/feature/domain/usecase/ping/ping_test.dart

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+import 'dart:convert';
+
+import 'package:dipantau_desktop_client/core/usecase/usecase.dart';
+import 'package:dipantau_desktop_client/feature/data/model/general/general_response.dart';
+import 'package:dipantau_desktop_client/feature/domain/usecase/ping/ping.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:mockito/mockito.dart';
+
+import '../../../../fixture/fixture_reader.dart';
+import '../../../../helper/mock_helper.mocks.dart';
+
+void main() {
+  late Ping useCase;
+  late MockGeneralRepository mockRepository;
+
+  setUp(() {
+    mockRepository = MockGeneralRepository();
+    useCase = Ping(repository: mockRepository);
+  });
+
+  test(
+    'pastikan objek repository berhasil menerima respon sukses atau gagal dari endpoint',
+    () async {
+      // arrange
+      final tResponse = GeneralResponse.fromJson(
+        json.decode(
+          fixture('general_response.json'),
+        ),
+      );
+      final tParams = NoParams();
+      final tResult = (failure: null, response: tResponse);
+      when(mockRepository.ping()).thenAnswer((_) async => tResult);
+
+      // act
+      final result = await useCase(tParams);
+
+      // assert
+      expect(result, tResult);
+      verify(mockRepository.ping());
+      verifyNoMoreInteractions(mockRepository);
+    },
+  );
+}