diff --git a/test/domain/weather/get_favorite_cities_stream_use_case_impl_test.dart b/test/domain/weather/get_favorite_cities_stream_use_case_impl_test.dart
new file mode 100644
index 00000000..b43eb5dc
--- /dev/null
+++ b/test/domain/weather/get_favorite_cities_stream_use_case_impl_test.dart
@@ -0,0 +1,58 @@
+import 'package:flutter_template/domain/weather/get_favorite_cities_stream_use_case.dart';
+import 'package:flutter_template/domain/weather/get_favorite_cities_stream_use_case_impl.dart';
+import 'package:flutter_template/foundation/unit.dart';
+import 'package:flutter_template/repository/weather/weather_repository.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:mocktail/mocktail.dart';
+
+import '../../exception/test_exceptions.dart';
+import '../../extensions/stream_extensions.dart';
+import '../../mocks/mocks.dart';
+import '../../test_models/city_models.dart';
+
+void main() {
+  late WeatherRepository weatherRepository;
+  late GetFavoriteCitiesStreamUseCase getFavoriteCitiesStreamUseCase;
+
+  setUp(() {
+    weatherRepository = MockWeatherRepository();
+    getFavoriteCitiesStreamUseCase = GetFavoriteCitiesStreamUseCaseImpl(
+        weatherRepository: weatherRepository);
+  });
+
+  tearDown(() {
+    resetMocktailState();
+  });
+
+  test(
+    "Given get favorite cities stream use case called, When no error occurs, Then correct data is emitted",
+    () {
+      // Given
+      final testCityList = singleCityList;
+      when(() => weatherRepository.getFavoriteCitiesStream())
+          .thenAnswer((invocation) => Stream.value(testCityList));
+
+      // When
+      expect(
+        getFavoriteCitiesStreamUseCase(unit),
+        // Then
+        emitsInOrder([testCityList]),
+      );
+    },
+  );
+
+  test(
+    "Given get favorite cities stream use case called, When error occurs, Then no data is emitted",
+    () {
+      // Given
+      final testException = TestException();
+      when(() => weatherRepository.getFavoriteCitiesStream())
+          .thenAnswer((invocation) => Stream.error(testException));
+
+      // When
+      getFavoriteCitiesStreamUseCase(unit)
+          // Then
+          .emitsNothing;
+    },
+  );
+}
diff --git a/test/domain/weather/set_city_favorite_use_case_impl_test.dart b/test/domain/weather/set_city_favorite_use_case_impl_test.dart
new file mode 100644
index 00000000..583f585b
--- /dev/null
+++ b/test/domain/weather/set_city_favorite_use_case_impl_test.dart
@@ -0,0 +1,61 @@
+import 'package:flutter_template/domain/entity/base/result/result.dart';
+import 'package:flutter_template/domain/weather/set_city_favorite_use_case_impl.dart';
+import 'package:flutter_template/repository/weather/weather_repository.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:mocktail/mocktail.dart';
+
+import '../../exception/test_exceptions.dart';
+import '../../extensions/mock_extensions.dart';
+import '../../mocks/mocks.dart';
+import '../../test_models/city_models.dart';
+
+void main() {
+  late WeatherRepository weatherRepository;
+  late SetCityFavoriteUseCaseImpl setCityFavoriteUseCase;
+
+  setUp(() {
+    weatherRepository = MockWeatherRepository();
+    setCityFavoriteUseCase = SetCityFavoriteUseCaseImpl(
+      weatherRepository: weatherRepository,
+    );
+  });
+
+  tearDown(() {
+    resetMocktailState();
+  });
+
+  test(
+    "Given set city favorite use case is called, When no error occurs, Then Result.success is returned",
+    () async {
+      // Given
+      final testCity = city1;
+      when(() => weatherRepository.setCityAsFavorite(testCity)).justRun();
+
+      // When
+      final result = await setCityFavoriteUseCase(param: testCity);
+
+      // Then
+      expect(result, isA<Success>());
+      verify(() => weatherRepository.setCityAsFavorite(testCity)).called(1);
+    },
+  );
+
+  test(
+    "Given set city favorite use case is called, When error occurs, Then Result.failure is returned",
+    () async {
+      // Given
+      final testCity = city1;
+      final testException = TestException();
+      when(() => weatherRepository.setCityAsFavorite(testCity))
+          .thenThrow(testException);
+
+      // When
+      final result = await setCityFavoriteUseCase(param: testCity);
+
+      // Then
+      expect(result, isA<Error>());
+      expect((result as Error).exception, same(testException));
+      verify(() => weatherRepository.setCityAsFavorite(testCity)).called(1);
+    },
+  );
+}
diff --git a/test/extensions/stream_extensions.dart b/test/extensions/stream_extensions.dart
index aca124b7..f69d5aa4 100644
--- a/test/extensions/stream_extensions.dart
+++ b/test/extensions/stream_extensions.dart
@@ -4,4 +4,6 @@ extension StreamEmitsInOrderExt<T> on Stream<T> {
   void inOrder(Iterable matchers) {
     expect(this, emitsInOrder(matchers));
   }
+
+  get emitsNothing => expect(this, neverEmits(isA<Object?>()));
 }
\ No newline at end of file
diff --git a/test/mocks/mocks.dart b/test/mocks/mocks.dart
index 10b174aa..33291600 100644
--- a/test/mocks/mocks.dart
+++ b/test/mocks/mocks.dart
@@ -7,6 +7,7 @@ import 'package:flutter_template/repository/weather/domain_weather_mapper.dart';
 import 'package:flutter_template/repository/weather/local_city_mapper.dart';
 import 'package:flutter_template/repository/weather/local_day_weather_mapper.dart';
 import 'package:flutter_template/repository/weather/local_weather_mapper.dart';
+import 'package:flutter_template/repository/weather/weather_repository.dart';
 import 'package:flutter_template/services/weather/local/weather_local_service.dart';
 import 'package:flutter_template/services/weather/remote/weather_remote_service.dart';
 import 'package:mocktail/mocktail.dart';
@@ -30,6 +31,8 @@ class MockLocalDayWeatherMapper extends Mock implements LocalDayWeatherMapper {}
 // Repositories
 class MockDateRepository extends Mock implements DateRepository {}
 
+class MockWeatherRepository extends Mock implements WeatherRepository {}
+
 // Interactors
 class MockFavoriteWeatherInteractor extends Mock
     implements FavoriteWeatherInteractor {}
diff --git a/test/presentation/unit/destinations/weather/search/search_view_model_test.dart b/test/presentation/unit/destinations/weather/search/search_view_model_test.dart
index e50f3d72..b29f3d17 100644
--- a/test/presentation/unit/destinations/weather/search/search_view_model_test.dart
+++ b/test/presentation/unit/destinations/weather/search/search_view_model_test.dart
@@ -18,7 +18,7 @@ import '../../../../../extensions/mock_extensions.dart';
 import '../../../../../extensions/stream_extensions.dart';
 import '../../../../../mocks/mocks.dart';
 import '../../../../base/test_helpers.dart';
-import '../models/ui_city_models.dart';
+import '../../../../../test_models/ui_city_models.dart';
 
 void main() {
   late SearchNavigator searchNavigator;
diff --git a/test/repository/weather/domain_city_mapper_impl_test.dart b/test/repository/weather/domain_city_mapper_impl_test.dart
new file mode 100644
index 00000000..1b7045a0
--- /dev/null
+++ b/test/repository/weather/domain_city_mapper_impl_test.dart
@@ -0,0 +1,101 @@
+import 'package:collection/collection.dart';
+import 'package:flutter_template/domain/entity/weather/city.dart';
+import 'package:flutter_template/repository/weather/domain_city_mapper.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:mocktail/mocktail.dart';
+
+import '../../test_models/city_models.dart';
+import '../../test_models/local_city_data_models.dart';
+import '../../test_models/remote_city_models.dart';
+
+void main() {
+  late DomainCityMapper domainCityMapper;
+
+  setUp(() {
+    domainCityMapper = DomainCityMapperImpl();
+  });
+
+  tearDown(() {
+    resetMocktailState();
+  });
+
+  test(
+    "Given local city data, When map called, Then city is returned",
+    () {
+      // Given
+      final localCityData = localCityData1;
+      final city = city1;
+
+      // When
+      final result = domainCityMapper.map(localCityData);
+
+      // Then
+      expect(result, isA<City>());
+      expect(result.title, city.title);
+      expect(result.location, city.location);
+      expect(result.id, city.id);
+      expect(result.locationType, city.locationType);
+    },
+  );
+
+  test(
+    "Given local city data list, When map list called, Then city list is returned",
+    () {
+      // Given
+      final localCityData = allLocalCityDataList;
+      final cityList = allCityList;
+
+      // When
+      final result = domainCityMapper.mapList(localCityData);
+
+      // Then
+      expect(result, isA<List<City>>());
+      result.forEachIndexed((index, city) {
+        expect(city.title, cityList[index].title);
+        expect(city.location, cityList[index].location);
+        expect(city.id, cityList[index].id);
+        expect(city.locationType, cityList[index].locationType);
+      });
+    },
+  );
+
+  test(
+    "Given remote city, When map remote city called, Then city is returned",
+        () {
+      // Given
+      const remoteCityData = remoteCity1;
+      final city = city1;
+
+      // When
+      final result = domainCityMapper.mapRemoteCity(remoteCityData);
+
+      // Then
+      expect(result, isA<City>());
+      expect(result.title, city.title);
+      expect(result.location, city.location);
+      expect(result.id, city.id);
+      expect(result.locationType, city.locationType);
+    },
+  );
+
+  test(
+    "Given local city data list, When map list called, Then city list is returned",
+        () {
+      // Given
+      const remoteCityList = allRemoteCityList;
+      final cityList = allCityList;
+
+      // When
+      final result = domainCityMapper.mapRemoteCityList(remoteCityList);
+
+      // Then
+      expect(result, isA<List<City>>());
+      result.forEachIndexed((index, city) {
+        expect(city.title, cityList[index].title);
+        expect(city.location, cityList[index].location);
+        expect(city.id, cityList[index].id);
+        expect(city.locationType, cityList[index].locationType);
+      });
+    },
+  );
+}
diff --git a/test/repository/weather/models/city_models.dart b/test/repository/weather/models/city_models.dart
deleted file mode 100644
index efaeb6a3..00000000
--- a/test/repository/weather/models/city_models.dart
+++ /dev/null
@@ -1,10 +0,0 @@
-import 'package:flutter_template/domain/entity/weather/city.dart';
-
-final cityList = [
-  City(
-    id: 1,
-    title: "title 1",
-    locationType: "locationType 1",
-    location: "location 1",
-  ),
-];
diff --git a/test/repository/weather/models/local_city_data_models.dart b/test/repository/weather/models/local_city_data_models.dart
deleted file mode 100644
index 2c8d511a..00000000
--- a/test/repository/weather/models/local_city_data_models.dart
+++ /dev/null
@@ -1,10 +0,0 @@
-import 'package:flutter_template/services/base/database/app_database.dart';
-
-final localCityDataList = [
-  LocalCityData(
-    woeid: 1,
-    title: "title 1",
-    locationType: "locationType 1",
-    location: "location 1",
-  ),
-];
diff --git a/test/repository/weather/weather_repository_impl_test.dart b/test/repository/weather/weather_repository_impl_test.dart
index 75e85174..a008a41c 100644
--- a/test/repository/weather/weather_repository_impl_test.dart
+++ b/test/repository/weather/weather_repository_impl_test.dart
@@ -14,14 +14,14 @@ import 'package:mocktail/mocktail.dart';
 
 import '../../exception/test_exceptions.dart';
 import '../../mocks/mocks.dart';
-import 'models/city_models.dart';
-import 'models/local_city_data_models.dart';
-import 'models/local_city_with_weather_models.dart';
-import 'models/local_day_weather_companion.dart';
-import 'models/local_day_weather_models.dart';
-import 'models/local_weather_companion_models.dart';
-import 'models/remote_weather_models.dart';
-import 'models/weather_models.dart';
+import '../../test_models/city_models.dart';
+import '../../test_models/local_city_data_models.dart';
+import '../../test_models/local_city_with_weather_models.dart';
+import '../../test_models/local_day_weather_companion.dart';
+import '../../test_models/local_day_weather_models.dart';
+import '../../test_models/local_weather_companion_models.dart';
+import '../../test_models/remote_weather_models.dart';
+import '../../test_models/weather_models.dart';
 
 void main() {
   late WeatherLocalService weatherLocalService;
@@ -65,8 +65,8 @@ void main() {
       "Given local service returns list of LocalCityData, When getFavoriteCitiesList is called, Then Future<List<City>> is returned",
       () async {
     // Given
-    final localCityData = localCityDataList;
-    final cityData = cityList;
+    final localCityData = singleLocalCityDataList;
+    final cityData = singleCityList;
     when(() => weatherLocalService.getFavouriteCities())
         .thenAnswer((_) => Future.value(localCityData));
     when(() => domainCityMapper.mapList(localCityData)).thenReturn(cityData);
@@ -104,8 +104,8 @@ void main() {
       "Given local services returns stream of local city data, When getFavoriteCitiesStream is called, then Stream<List<City>> is returned",
       () {
     // Given
-    final localCityData = localCityDataList;
-    final cityData = cityList;
+    final localCityData = singleLocalCityDataList;
+    final cityData = singleCityList;
     when(() => weatherLocalService.getFavoriteCitiesStream())
         .thenAnswer((_) => Stream.value(localCityData));
     when(() => domainCityMapper.mapList(localCityData)).thenReturn(cityData);
@@ -218,7 +218,7 @@ void main() {
       () async {
     // Given
     const date = Date(year: 1970, month: 1, day: 1);
-    final localCityData = localCityDataList;
+    final localCityData = singleLocalCityDataList;
     final localCity = localCityData.first;
     final remoteWeatherData = remoteWeather;
     const localWeatherCompanionData = localWeatherCompanion;
@@ -271,7 +271,7 @@ void main() {
     // Given
     const date = Date(year: 1970, month: 1, day: 1);
     const nowDate = Date(year: 2021, month: 1, day: 31);
-    final localCityData = localCityDataList;
+    final localCityData = singleLocalCityDataList;
     final localCity = localCityData.first;
     final remoteWeatherData = remoteWeather;
     const localWeatherCompanionData = localWeatherCompanion;
@@ -324,7 +324,7 @@ void main() {
       () async {
     // Given
     const date = Date(year: 1970, month: 1, day: 1);
-    final localCityData = localCityDataList;
+    final localCityData = singleLocalCityDataList;
     final localCity = localCityData.first;
     const localWeatherCompanionData = localWeatherCompanion;
     final localDayWeatherCompanionData = localDayWeatherCompanionList;
diff --git a/test/test_models/city_models.dart b/test/test_models/city_models.dart
new file mode 100644
index 00000000..11677039
--- /dev/null
+++ b/test/test_models/city_models.dart
@@ -0,0 +1,24 @@
+import 'package:flutter_template/domain/entity/weather/city.dart';
+
+final singleCityList = [
+  city1,
+];
+
+final allCityList = [
+  city1,
+  city2,
+];
+
+final city1 = City(
+  id: 1,
+  title: "title 1",
+  locationType: "locationType 1",
+  location: "location 1",
+);
+
+final city2 = City(
+  id: 2,
+  title: "title 2",
+  locationType: "locationType 2",
+  location: "location 2",
+);
diff --git a/test/test_models/local_city_data_models.dart b/test/test_models/local_city_data_models.dart
new file mode 100644
index 00000000..18f74262
--- /dev/null
+++ b/test/test_models/local_city_data_models.dart
@@ -0,0 +1,24 @@
+import 'package:flutter_template/services/base/database/app_database.dart';
+
+final singleLocalCityDataList = [
+  localCityData1,
+];
+
+final allLocalCityDataList = [
+  localCityData1,
+  localCityData2,
+];
+
+final localCityData1 = LocalCityData(
+  woeid: 1,
+  title: "title 1",
+  locationType: "locationType 1",
+  location: "location 1",
+);
+
+final localCityData2 = LocalCityData(
+  woeid: 2,
+  title: "title 2",
+  locationType: "locationType 2",
+  location: "location 2",
+);
diff --git a/test/repository/weather/models/local_city_with_weather_models.dart b/test/test_models/local_city_with_weather_models.dart
similarity index 100%
rename from test/repository/weather/models/local_city_with_weather_models.dart
rename to test/test_models/local_city_with_weather_models.dart
diff --git a/test/repository/weather/models/local_day_weather_companion.dart b/test/test_models/local_day_weather_companion.dart
similarity index 100%
rename from test/repository/weather/models/local_day_weather_companion.dart
rename to test/test_models/local_day_weather_companion.dart
diff --git a/test/repository/weather/models/local_day_weather_models.dart b/test/test_models/local_day_weather_models.dart
similarity index 100%
rename from test/repository/weather/models/local_day_weather_models.dart
rename to test/test_models/local_day_weather_models.dart
diff --git a/test/repository/weather/models/local_weather_companion_models.dart b/test/test_models/local_weather_companion_models.dart
similarity index 100%
rename from test/repository/weather/models/local_weather_companion_models.dart
rename to test/test_models/local_weather_companion_models.dart
diff --git a/test/test_models/remote_city_models.dart b/test/test_models/remote_city_models.dart
new file mode 100644
index 00000000..6494c5b3
--- /dev/null
+++ b/test/test_models/remote_city_models.dart
@@ -0,0 +1,20 @@
+import 'package:flutter_template/services/entity/weather/remote/remote_city.dart';
+
+const allRemoteCityList = [
+  remoteCity1,
+  remoteCity2,
+];
+
+const remoteCity1 = RemoteCity(
+  woeid: 1,
+  title: "title 1",
+  locationType: "locationType 1",
+  location: "location 1",
+);
+
+const remoteCity2 = RemoteCity(
+  woeid: 2,
+  title: "title 2",
+  locationType: "locationType 2",
+  location: "location 2",
+);
diff --git a/test/repository/weather/models/remote_weather_models.dart b/test/test_models/remote_weather_models.dart
similarity index 100%
rename from test/repository/weather/models/remote_weather_models.dart
rename to test/test_models/remote_weather_models.dart
diff --git a/test/presentation/unit/destinations/weather/models/ui_city_models.dart b/test/test_models/ui_city_models.dart
similarity index 100%
rename from test/presentation/unit/destinations/weather/models/ui_city_models.dart
rename to test/test_models/ui_city_models.dart
diff --git a/test/repository/weather/models/weather_models.dart b/test/test_models/weather_models.dart
similarity index 100%
rename from test/repository/weather/models/weather_models.dart
rename to test/test_models/weather_models.dart