repo test

Author: jackwill99

lib/promo/data/repositories/promo_repository_impl.dart

@@ -9,9 +9,7 @@ import '../models/promo_model.dart';
 class PromoRepositoryImpl implements PromoRepository {
   late ApiService _apiServices;
 
-  PromoRepositoryImpl() {
-    _apiServices = ApiService();
-  }
+  PromoRepositoryImpl(this._apiServices);
 
   @override
   Future<void> delFavPromo({required Promo promo}) async {

lib/promo/presentation/state/promo_controller.dart

@@ -1,4 +1,5 @@
 import 'package:get/get.dart';
+import 'package:test_driven_development/promo/data/data_sources/api_service.dart';
 
 import '../../data/repositories/promo_repository_impl.dart';
 import '../../domain/entities/promo.dart';
@@ -10,7 +11,8 @@ class PromoController extends GetxController {
   @override
   onInit() {
     super.onInit();
-    _promoUseCase = PromoUseCase(PromoRepositoryImpl());
+    final apiService = ApiService();
+    _promoUseCase = PromoUseCase(PromoRepositoryImpl(apiService));
   }
 
   Future<Promo> getFavPromo() async {

test/helpers/mock_helper.dart

@@ -1,7 +1,6 @@
 import 'package:mockito/annotations.dart';
+import 'package:test_driven_development/promo/data/data_sources/api_service.dart';
 import 'package:test_driven_development/promo/domain/repositories/promo_repository.dart';
 
-@GenerateMocks(
-  [PromoRepository],
-)
+@GenerateMocks([PromoRepository, ApiService])
 void main() {}

test/helpers/mock_helper.mocks.dart

@@ -6,6 +6,10 @@
 import 'dart:async' as _i4;
 
 import 'package:mockito/mockito.dart' as _i1;
+import 'package:test_driven_development/promo/data/data_sources/api_service.dart'
+    as _i5;
+import 'package:test_driven_development/promo/data/models/promo_model.dart'
+    as _i6;
 import 'package:test_driven_development/promo/domain/entities/promo.dart'
     as _i2;
 import 'package:test_driven_development/promo/domain/repositories/promo_repository.dart'
@@ -91,3 +95,51 @@ class MockPromoRepository extends _i1.Mock implements _i3.PromoRepository {
         returnValueForMissingStub: _i4.Future<void>.value(),
       ) as _i4.Future<void>);
 }
+
+/// A class which mocks [ApiService].
+///
+/// See the documentation for Mockito's code generation for more information.
+class MockApiService extends _i1.Mock implements _i5.ApiService {
+  MockApiService() {
+    _i1.throwOnMissingStub(this);
+  }
+
+  @override
+  _i4.Future<void> delFavPromo({required _i2.Promo? promo}) =>
+      (super.noSuchMethod(
+        Invocation.method(
+          #delFavPromo,
+          [],
+          {#promo: promo},
+        ),
+        returnValue: _i4.Future<void>.value(),
+        returnValueForMissingStub: _i4.Future<void>.value(),
+      ) as _i4.Future<void>);
+  @override
+  _i4.Future<void> saveFavPromo({required _i2.Promo? promo}) =>
+      (super.noSuchMethod(
+        Invocation.method(
+          #saveFavPromo,
+          [],
+          {#promo: promo},
+        ),
+        returnValue: _i4.Future<void>.value(),
+        returnValueForMissingStub: _i4.Future<void>.value(),
+      ) as _i4.Future<void>);
+  @override
+  _i4.Future<_i6.PromoModel?> getExpiryPromo() => (super.noSuchMethod(
+        Invocation.method(
+          #getExpiryPromo,
+          [],
+        ),
+        returnValue: _i4.Future<_i6.PromoModel?>.value(),
+      ) as _i4.Future<_i6.PromoModel?>);
+  @override
+  _i4.Future<_i6.PromoModel?> getFavPromo() => (super.noSuchMethod(
+        Invocation.method(
+          #getFavPromo,
+          [],
+        ),
+        returnValue: _i4.Future<_i6.PromoModel?>.value(),
+      ) as _i4.Future<_i6.PromoModel?>);
+}

test/promo_repo_test.dart

@@ -0,0 +1,31 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:mockito/mockito.dart';
+import 'package:test_driven_development/promo/data/models/promo_model.dart';
+import 'package:test_driven_development/promo/data/repositories/promo_repository_impl.dart';
+
+import 'helpers/json_reader.dart';
+import 'helpers/mock_helper.mocks.dart';
+
+void main() {
+  late PromoRepositoryImpl promoRepo;
+  late MockApiService apiService;
+
+  setUp(() {
+    apiService = MockApiService();
+    promoRepo = PromoRepositoryImpl(apiService);
+  });
+
+  final tPromoModel = PromoModel.fromJson(readJson("promo_dummy.json"));
+
+  test("Should return promo model when an api data source is success",
+      () async {
+    // arrange
+    when(apiService.getFavPromo()).thenAnswer((_) async => tPromoModel);
+
+    // act
+    final result = await promoRepo.getFavPromo();
+
+    // assert
+    expect(result, isA<PromoModel>());
+  });
+}