feat(sbp_payments): added new layoute for sbp banks and rederict to chosen bank, and added tests for layoute

test/features/payment/presentation/widgets/sbp_banks_bottom_sheet_test.dart

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+import 'dart:async';
+
+import 'package:eatvio_app/core/theme/theme_helper.dart';
+import 'package:eatvio_app/core/widgets/loader.dart';
+import 'package:eatvio_app/features/chat/models/payment_model.dart';
+import 'package:eatvio_app/features/payment/presentation/cubit/consultation_payment_cubit/consultation_payment_cubit.dart';
+import 'package:eatvio_app/features/payment/presentation/widgets/sbp_banks_bottom_sheet.dart';
+import 'package:eatvio_app/features/payment/repositories/payment_repository.dart';
+import 'package:eatvio_app/features/payment/repositories/sbp_repository.dart';
+import 'package:eatvio_app/generated/l10n.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:mockito/annotations.dart';
+import 'package:mockito/mockito.dart';
+import 'package:sbp/models/c2bmembers_model.dart';
+
+import '../../../../fixtures/fixture_reader.dart';
+import 'sbp_banks_bottom_sheet_test.mocks.dart';
+
+@GenerateNiceMocks([
+  MockSpec<PaymentRepository>(),
+  MockSpec<SbpRepository>(),
+])
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  group('SbpBanksBottomSheet', () {
+    late MockPaymentRepository mockPaymentRepository;
+    late MockSbpRepository mockSbpRepository;
+    late ConsultationPaymentCubit cubit;
+    late PaymentModel alfaPayment;
+
+    final installedBank = C2bmemberModel.fromJson(const {
+      'bankName': 'Сбербанк',
+      'logoURL': 'https://qr.nspk.ru/proxyapp/logo/bank100000000111.png',
+      'schema': 'bank100000000111',
+      'package_name': 'ru.sberbankmobile',
+      'icon': '',
+    });
+
+    setUp(() {
+      mockPaymentRepository = MockPaymentRepository();
+      mockSbpRepository = MockSbpRepository();
+      cubit = ConsultationPaymentCubit(
+        paymentRepository: mockPaymentRepository,
+        sbpRepository: mockSbpRepository,
+      );
+      alfaPayment = PaymentModel.fromJson(
+        FixtureReader.readAsMap('chat/payments/payment_response_alfa_bank.json'),
+      );
+    });
+
+    tearDown(() {
+      cubit.close();
+    });
+
+    Widget createTestWidget({required int planId}) {
+      return MaterialApp(
+        theme: ThemeHelper().themeData(),
+        localizationsDelegates: const [
+          S.delegate,
+          GlobalMaterialLocalizations.delegate,
+          GlobalWidgetsLocalizations.delegate,
+          GlobalCupertinoLocalizations.delegate,
+        ],
+        supportedLocales: const [Locale('ru')],
+        home: Scaffold(
+          body: SbpBanksBottomSheet(
+            planId: planId,
+            cubit: cubit,
+          ),
+        ),
+      );
+    }
+
+    testWidgets('показывает Loader пока идёт startPayment', (tester) async {
+      const planId = 12;
+      final completer = Completer<PaymentModel>();
+
+      when(
+        mockPaymentRepository.startPaymentProcess(planId: planId),
+      ).thenAnswer((_) => completer.future);
+
+      await tester.pumpWidget(createTestWidget(planId: planId));
+      await tester.pump();
+
+      expect(find.byType(Loader), findsOneWidget);
+      expect(find.text('Сбербанк'), findsNothing);
+
+      completer.complete(alfaPayment);
+      when(mockSbpRepository.getInstalledBanks()).thenAnswer((_) async => [installedBank]);
+      await tester.pumpAndSettle();
+    });
+
+    testWidgets('вызывает startPaymentProcess с переданным planId', (tester) async {
+      const planId = 12;
+
+      when(
+        mockPaymentRepository.startPaymentProcess(planId: planId),
+      ).thenAnswer((_) async => alfaPayment);
+      when(mockSbpRepository.getInstalledBanks()).thenAnswer((_) async => [installedBank]);
+
+      await tester.pumpWidget(createTestWidget(planId: planId));
+      await tester.pumpAndSettle();
+
+      verify(mockPaymentRepository.startPaymentProcess(planId: planId)).called(1);
+    });
+
+    testWidgets('после успеха показывает список банков и скрывает Loader', (tester) async {
+      const planId = 12;
+
+      when(
+        mockPaymentRepository.startPaymentProcess(planId: planId),
+      ).thenAnswer((_) async => alfaPayment);
+      when(mockSbpRepository.getInstalledBanks()).thenAnswer((_) async => [installedBank]);
+
+      await tester.pumpWidget(createTestWidget(planId: planId));
+      await tester.pumpAndSettle();
+
+      expect(find.byType(Loader), findsNothing);
+      expect(find.text('Выберите банк'), findsOneWidget);
+      expect(find.text('Сбербанк'), findsOneWidget);
+    });
+
+    testWidgets('tap по банку вызывает openBank с checkout_url', (tester) async {
+      const planId = 12;
+
+      when(
+        mockPaymentRepository.startPaymentProcess(planId: planId),
+      ).thenAnswer((_) async => alfaPayment);
+      when(mockSbpRepository.getInstalledBanks()).thenAnswer((_) async => [installedBank]);
+      when(
+        mockSbpRepository.openBank(
+          url: alfaPayment.paymentUrl,
+          bank: installedBank,
+        ),
+      ).thenAnswer((_) async => true);
+
+      await tester.pumpWidget(createTestWidget(planId: planId));
+      await tester.pumpAndSettle();
+
+      await tester.tap(find.text('Сбербанк'));
+      await tester.pumpAndSettle();
+
+      verify(
+        mockSbpRepository.openBank(
+          url: alfaPayment.paymentUrl,
+          bank: installedBank,
+        ),
+      ).called(1);
+    });
+
+    testWidgets('при ошибке API показывает сообщение об ошибке', (tester) async {
+      const planId = 12;
+
+      when(
+        mockPaymentRepository.startPaymentProcess(planId: planId),
+      ).thenThrow(Exception('Payment start failed'));
+
+      await tester.pumpWidget(createTestWidget(planId: planId));
+      await tester.pumpAndSettle();
+
+      expect(find.byType(Loader), findsNothing);
+      expect(find.text('Сбербанк'), findsNothing);
+      expect(
+        find.text('Не удалось начать оплату. Попробуйте позже'),
+        findsOneWidget,
+      );
+    });
+
+    testWidgets('при пустом списке банков показывает empty-сообщение', (tester) async {
+      const planId = 12;
+
+      when(
+        mockPaymentRepository.startPaymentProcess(planId: planId),
+      ).thenAnswer((_) async => alfaPayment);
+      when(mockSbpRepository.getInstalledBanks()).thenAnswer((_) async => []);
+
+      await tester.pumpWidget(createTestWidget(planId: planId));
+      await tester.pumpAndSettle();
+
+      expect(find.byType(Loader), findsNothing);
+      expect(find.text('Нет установленных банков'), findsOneWidget);
+    });
+  });
+}