feat: 天気情報取得のユニットテスト作成

test/weather_test.dart

@@ -0,0 +1,147 @@
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:flutter_training/model/weather.dart';
+import 'package:flutter_training/model/weather_condition.dart';
+import 'package:flutter_training/model/weather_exception.dart';
+import 'package:flutter_training/model/weather_request.dart';
+import 'package:flutter_training/model/weather_response.dart';
+import 'package:mockito/annotations.dart';
+import 'package:mockito/mockito.dart';
+import 'package:yumemi_weather/yumemi_weather.dart';
+
+import 'weather_test.mocks.dart';
+
+@GenerateNiceMocks([MockSpec<YumemiWeather>()])
+void main() {
+  late MockYumemiWeather mockYumemiWeather;
+  late ProviderContainer container;
+  final request = WeatherRequest(
+    area: 'tokyo',
+    date: DateTime.now(),
+  );
+
+  setUp(() {
+    mockYumemiWeather = MockYumemiWeather();
+    container = ProviderContainer(
+      overrides: [
+        weatherProvider.overrideWithValue(
+          Weather(client: mockYumemiWeather),
+        ),
+      ],
+    );
+  });
+
+  tearDown(() {
+    container.dispose();
+  });
+
+  group('天気情報取得のテスト', () {
+    test(
+      '天気情報取得に成功_正常なレスポンスを返した場合',
+      () async {
+        // Given
+        when(
+          mockYumemiWeather.fetchWeather(any),
+        ).thenReturn(
+          '''
+            {
+              "weather_condition": "sunny",
+              "max_temperature": 30,
+              "min_temperature": 20,
+              "date": "2020-04-01T12:00:00+09:00"
+            }
+        ''',
+        );
+
+        // When
+        final response = container.read(weatherProvider).fetch(request);
+
+        const expectedResponse = WeatherResponse(
+          weatherCondition: WeatherCondition.sunny,
+          maxTemperature: 30,
+          minTemperature: 20,
+        );
+
+        // Verify
+        expect(
+          response,
+          isA<Success<WeatherResponse, AppException>>().having(
+            (success) => success.value,
+            'expected WeatherResponse',
+            expectedResponse,
+          ),
+        );
+      },
+    );
+
+    test('天気情報取得に失敗_APIがInvalidParameter返した場合', () async {
+      when(
+        mockYumemiWeather.fetchWeather(any),
+      ).thenThrow(YumemiWeatherError.invalidParameter);
+
+      // When
+      final response = container.read(weatherProvider).fetch(request);
+
+      const expectedResponse = InvalidParameter();
+
+      // Then
+      expect(
+        response,
+        isA<Failure<WeatherResponse, AppException>>().having(
+          (failure) => failure.exception,
+          'AppException',
+          expectedResponse,
+        ),
+      );
+    });
+
+    test('天気情報取得に失敗_APIが不明なエラーを返した場合', () async {
+      when(
+        mockYumemiWeather.fetchWeather(any),
+      ).thenThrow(YumemiWeatherError.unknown);
+
+      // When
+      final response = container.read(weatherProvider).fetch(request);
+
+      const expectedResponse = UnknownWeather();
+
+      // Then
+      expect(
+        response,
+        isA<Failure<WeatherResponse, AppException>>().having(
+          (failure) => failure.exception,
+          'AppException',
+          expectedResponse,
+        ),
+      );
+    });
+
+    test('天気情報取得に失敗_APIがアプリ側未定義の天気を返した場合', () async {
+      when(
+        mockYumemiWeather.fetchWeather(any),
+      ).thenReturn('''
+            {
+              "weather_condition": "dummy",
+              "max_temperature": 30,
+              "min_temperature": 20,
+              "date": "2020-04-01T12:00:00+09:00"
+            }
+        ''');
+
+      // When
+      final response = container.read(weatherProvider).fetch(request);
+
+      const expectedResponse = ResponseFormatException();
+
+      // Then
+      expect(
+        response,
+        isA<Failure<WeatherResponse, AppException>>().having(
+          (failure) => failure.exception,
+          'AppException',
+          expectedResponse,
+        ),
+      );
+    });
+  });
+}

test/weather_test.mocks.dart

@@ -0,0 +1,114 @@
+// Mocks generated by Mockito 5.4.4 from annotations
+// in flutter_training/test/weather_test.dart.
+// Do not manually edit this file.
+
+// ignore_for_file: no_leading_underscores_for_library_prefixes
+import 'package:mockito/mockito.dart' as _i1;
+import 'package:mockito/src/dummies.dart' as _i3;
+import 'package:yumemi_weather/src/yumemi_weather_base.dart' as _i2;
+
+// ignore_for_file: type=lint
+// ignore_for_file: avoid_redundant_argument_values
+// ignore_for_file: avoid_setters_without_getters
+// ignore_for_file: comment_references
+// ignore_for_file: deprecated_member_use
+// ignore_for_file: deprecated_member_use_from_same_package
+// ignore_for_file: implementation_imports
+// ignore_for_file: invalid_use_of_visible_for_testing_member
+// ignore_for_file: prefer_const_constructors
+// ignore_for_file: unnecessary_parenthesis
+// ignore_for_file: camel_case_types
+// ignore_for_file: subtype_of_sealed_class
+
+/// A class which mocks [YumemiWeather].
+///
+/// See the documentation for Mockito's code generation for more information.
+class MockYumemiWeather extends _i1.Mock implements _i2.YumemiWeather {
+  @override
+  String fetchSimpleWeather() => (super.noSuchMethod(
+        Invocation.method(
+          #fetchSimpleWeather,
+          [],
+        ),
+        returnValue: _i3.dummyValue<String>(
+          this,
+          Invocation.method(
+            #fetchSimpleWeather,
+            [],
+          ),
+        ),
+        returnValueForMissingStub: _i3.dummyValue<String>(
+          this,
+          Invocation.method(
+            #fetchSimpleWeather,
+            [],
+          ),
+        ),
+      ) as String);
+
+  @override
+  String fetchThrowsWeather(String? area) => (super.noSuchMethod(
+        Invocation.method(
+          #fetchThrowsWeather,
+          [area],
+        ),
+        returnValue: _i3.dummyValue<String>(
+          this,
+          Invocation.method(
+            #fetchThrowsWeather,
+            [area],
+          ),
+        ),
+        returnValueForMissingStub: _i3.dummyValue<String>(
+          this,
+          Invocation.method(
+            #fetchThrowsWeather,
+            [area],
+          ),
+        ),
+      ) as String);
+
+  @override
+  String fetchWeather(String? jsonString) => (super.noSuchMethod(
+        Invocation.method(
+          #fetchWeather,
+          [jsonString],
+        ),
+        returnValue: _i3.dummyValue<String>(
+          this,
+          Invocation.method(
+            #fetchWeather,
+            [jsonString],
+          ),
+        ),
+        returnValueForMissingStub: _i3.dummyValue<String>(
+          this,
+          Invocation.method(
+            #fetchWeather,
+            [jsonString],
+          ),
+        ),
+      ) as String);
+
+  @override
+  String syncFetchWeather(String? jsonString) => (super.noSuchMethod(
+        Invocation.method(
+          #syncFetchWeather,
+          [jsonString],
+        ),
+        returnValue: _i3.dummyValue<String>(
+          this,
+          Invocation.method(
+            #syncFetchWeather,
+            [jsonString],
+          ),
+        ),
+        returnValueForMissingStub: _i3.dummyValue<String>(
+          this,
+          Invocation.method(
+            #syncFetchWeather,
+            [jsonString],
+          ),
+        ),
+      ) as String);
+}