mobile/test/app_test.dart

import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:http/testing.dart';
import 'package:lichess_mobile/l10n/l10n.dart';
import 'package:lichess_mobile/src/app.dart';
import 'package:lichess_mobile/src/model/settings/general_preferences.dart';
import 'package:lichess_mobile/src/model/settings/preferences_storage.dart';
import 'package:lichess_mobile/src/network/http.dart';
import 'package:lichess_mobile/src/tab_scaffold.dart';
import 'package:lichess_mobile/src/view/home/home_tab_screen.dart';

import 'model/auth/fake_auth_storage.dart';
import 'network/fake_http_client_factory.dart';
import 'test_helpers.dart';
import 'test_provider_scope.dart';

void main() {
  testWidgets('App loads', (tester) async {
    final app = await makeTestProviderScope(tester, child: const Application());

    await tester.pumpWidget(app);

    await tester.pump(const Duration(milliseconds: 100));

    expect(find.byType(MaterialApp), findsOneWidget);
    expect(find.byType(HomeTabScreen), findsOneWidget);
  }, variant: kPlatformVariant);

  testWidgets('App loads with system theme, which defaults to light', (tester) async {
    final app = await makeTestProviderScope(tester, child: const Application());

    await tester.pumpWidget(app);

    expect(Theme.of(tester.element(find.byType(MaterialApp))).brightness, Brightness.light);
  }, variant: kPlatformVariant);

  testWidgets(
    'App will delete a stored authUser on startup if one request return 401',
    (tester) async {
      int tokenTestRequests = 0;
      final mockClient = MockClient((request) {
        if (request.url.path == '/api/token/test') {
          tokenTestRequests++;
          return mockResponse('''
{
  "${fakeAuthUser.token}": null
}
        ''', 200);
        } else if (request.url.path == '/api/account') {
          return mockResponse('{"error": "Unauthorized"}', 401);
        }
        return mockResponse('', 404);
      });

      final app = await makeTestProviderScope(
        tester,
        child: const Application(),
        authUser: fakeAuthUser,
        overrides: {
          httpClientFactoryProvider: httpClientFactoryProvider.overrideWith(
            (ref) => FakeHttpClientFactory(() => mockClient),
          ),
        },
      );

      await tester.pumpWidget(app);

      expect(find.byType(MaterialApp), findsOneWidget);
      expect(find.byType(HomeTabScreen), findsOneWidget);

      // wait for the startup requests and animations to complete
      await tester.pumpAndSettle(const Duration(milliseconds: 100));

      // should see welcome message
      expect(
        find.text(
          'Lichess is a free (really), libre, no-ads, open source chess server.',
          findRichText: true,
        ),
        findsOneWidget,
      );

      // should have made a request to test the token
      expect(tokenTestRequests, 1);

      // authUser is not active anymore
      expect(find.text('Sign in'), findsOneWidget);
    },
    variant: kPlatformVariant,
  );

  testWidgets('Bottom navigation', variant: kPlatformVariant, (tester) async {
    final app = await makeTestProviderScope(tester, child: const Application());

    await tester.pumpWidget(app);

    expect(find.byType(MainTabScaffold), findsOneWidget);

    expect(find.text('Home'), findsOneWidget);
    expect(find.text('Puzzles'), findsOneWidget);
    expect(find.text('Learn'), findsOneWidget);
    expect(find.text('Watch'), findsOneWidget);
  });

  testWidgets('language support', (tester) async {
    for (final locale in AppLocalizations.supportedLocales) {
      final app = await makeTestProviderScope(
        tester,
        child: const Application(),
        defaultPreferences: {
          PrefCategory.general.storageKey: jsonEncode(
            GeneralPrefs.defaults.copyWith(locale: locale).toJson(),
          ),
        },
        key: ValueKey('locale_$locale'),
      );

      await tester.pumpWidget(app);

      expect(find.byType(MaterialApp), findsOneWidget, reason: 'app loads with locale: $locale');

      // TODO find the reason why home does not load
      // expect(find.byType(HomeTabScreen), findsOneWidget, reason: 'app loads with locale: $locale');
    }
  }, variant: kPlatformVariant);
}