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test: widget test per il layer di presentazione

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Prima era esercitato solo dall'integration test su emulatore:

- converter_page: ricerca, stati vuoti, selezione, calcolo, swap, reset
- shopping_list_page: aggiunta, contatore, sezione completati, dialog svuota
- meal_planner_page: 7 card, giorno espanso, genera lista, dialog svuota,
  stato del pulsante Condividi
- qr_share_sheet: QR per piano valido, errore oltre il limite, chiusura
- app (BitePlanApp): navigazione fra i tab, bottom sheet informazioni
- guide_page e info_bottom_sheet: contenuti e navigazione alla guida
- empty_state: icona, titolo, sottotitolo opzionale
- coverage_helper: importa tutta lib/ così lcov include anche i file
  non toccati da alcun test

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
Davide Grilli
2026-07-12 20:08:49 +02:00
parent 9384bd6117
commit d94bd5fdf7
9 changed files with 623 additions and 0 deletions
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test/app_test.dart
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import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:provider/provider.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:biteplan/app.dart';
import 'package:biteplan/core/constants/app_constants.dart';
import 'package:biteplan/features/converter/providers/converter_provider.dart';
import 'package:biteplan/features/meal_planner/providers/meal_planner_provider.dart';
import 'package:biteplan/features/shopping_list/providers/shopping_list_provider.dart';
Future<void> _pumpApp(WidgetTester tester) async {
await tester.binding.setSurfaceSize(const Size(800, 1600));
addTearDown(() => tester.binding.setSurfaceSize(null));
await tester.pumpWidget(
MultiProvider(
providers: [
ChangeNotifierProvider(create: (_) => MealPlannerProvider()..load()),
ChangeNotifierProvider(create: (_) => ConverterProvider()..loadDb()),
ChangeNotifierProvider(create: (_) => ShoppingListProvider()..load()),
],
child: const BitePlanApp(),
),
);
await tester.pumpAndSettle();
}
Finder _appBarTitle(String text) => find.descendant(
of: find.byType(AppBar), matching: find.text(text));
void main() {
setUp(() {
SharedPreferences.setMockInitialValues({});
});
group('BitePlanApp', () {
testWidgets('parte sul tab Piano Pasti', (tester) async {
await _pumpApp(tester);
expect(_appBarTitle('Piano Pasti'), findsOneWidget);
expect(find.byType(NavigationBar), findsOneWidget);
});
testWidgets('naviga al tab Convertitore', (tester) async {
await _pumpApp(tester);
await tester.tap(find.text('Converti'));
await tester.pumpAndSettle();
expect(_appBarTitle('Convertitore'), findsOneWidget);
expect(find.text('Cerca un alimento per iniziare'), findsOneWidget);
});
testWidgets('naviga al tab Lista della spesa', (tester) async {
await _pumpApp(tester);
await tester.tap(find.text('Spesa'));
await tester.pumpAndSettle();
expect(_appBarTitle('Lista della spesa'), findsOneWidget);
expect(find.text('Lista vuota'), findsOneWidget);
});
testWidgets('il bottone info apre il bottom sheet informazioni',
(tester) async {
await _pumpApp(tester);
await tester.tap(find.byIcon(Icons.info_outline));
await tester.pumpAndSettle();
expect(find.text('Versione $kAppVersion'), findsOneWidget);
});
});
}
test/coverage_helper_test.dart
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// Importa tutti i file di lib/ così il report di coverage include anche
// i file non toccati da alcun test (altrimenti lcov li ignora del tutto).
// ignore_for_file: unused_import
import 'package:biteplan/app.dart';
import 'package:biteplan/core/constants/app_constants.dart';
import 'package:biteplan/core/theme/app_theme.dart';
import 'package:biteplan/features/converter/models/conversion_entry.dart';
import 'package:biteplan/features/converter/presentation/pages/converter_page.dart';
import 'package:biteplan/features/converter/providers/converter_provider.dart';
import 'package:biteplan/features/guide/presentation/pages/guide_page.dart';
import 'package:biteplan/features/guide/presentation/widgets/info_bottom_sheet.dart';
import 'package:biteplan/features/meal_planner/models/meal_plan.dart';
import 'package:biteplan/features/meal_planner/presentation/pages/meal_planner_page.dart';
import 'package:biteplan/features/meal_planner/presentation/pages/qr_scan_page.dart';
import 'package:biteplan/features/meal_planner/presentation/widgets/meal_card.dart';
import 'package:biteplan/features/meal_planner/presentation/widgets/qr_share_sheet.dart';
import 'package:biteplan/features/meal_planner/providers/meal_planner_provider.dart';
import 'package:biteplan/features/meal_planner/qr_codec.dart';
import 'package:biteplan/features/shopping_list/models/shopping_item.dart';
import 'package:biteplan/features/shopping_list/presentation/pages/shopping_list_page.dart';
import 'package:biteplan/features/shopping_list/presentation/widgets/shopping_item_tile.dart';
import 'package:biteplan/features/shopping_list/providers/shopping_list_provider.dart';
import 'package:biteplan/main.dart';
import 'package:biteplan/shared/services/storage_service.dart';
import 'package:biteplan/shared/services/update_service.dart';
import 'package:biteplan/shared/services/url_launcher_service.dart';
import 'package:biteplan/shared/widgets/empty_state.dart';
import 'package:biteplan/shared/widgets/update_dialog.dart';
import 'package:flutter_test/flutter_test.dart';
void main() {
test('coverage helper', () {
expect(true, isTrue);
});
}
test/features/converter/pages/converter_page_test.dart
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import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:provider/provider.dart';
import 'package:biteplan/features/converter/models/conversion_entry.dart';
import 'package:biteplan/features/converter/presentation/pages/converter_page.dart';
import 'package:biteplan/features/converter/providers/converter_provider.dart';
import '../../../helpers/pump_app.dart';
Widget _page(ConverterProvider provider) => ChangeNotifierProvider.value(
value: provider,
child: const Scaffold(body: ConverterPage()),
);
const _riso =
ConversionEntry(food: 'riso', method: 'bollitura', yieldFactor: 3.0);
void main() {
late ConverterProvider provider;
setUp(() {
provider = ConverterProvider();
});
group('ConverterPage — ricerca', () {
testWidgets('mostra lo stato vuoto iniziale', (tester) async {
await tester.pumpApp(_page(provider));
expect(find.text('Cerca un alimento per iniziare'), findsOneWidget);
});
testWidgets('la ricerca mostra risultati dal database', (tester) async {
await provider.loadDb();
await tester.pumpApp(_page(provider));
await tester.enterText(find.byType(TextField), 'riso');
await tester.pump();
expect(find.byType(ListTile), findsWidgets);
});
testWidgets('ricerca senza corrispondenze mostra "Nessun risultato"',
(tester) async {
await provider.loadDb();
await tester.pumpApp(_page(provider));
await tester.enterText(find.byType(TextField), 'xyzabc');
await tester.pump();
expect(find.text('Nessun risultato'), findsOneWidget);
});
testWidgets('tap su un risultato apre la card di conversione',
(tester) async {
await provider.loadDb();
await tester.pumpApp(_page(provider));
await tester.enterText(find.byType(TextField), 'riso');
await tester.pump();
await tester.tap(find.byType(ListTile).first);
await tester.pump();
expect(find.text('Cambia'), findsOneWidget);
expect(find.text('CRUDO'), findsOneWidget);
expect(find.text('COTTO'), findsOneWidget);
});
});
group('ConverterPage — card di conversione', () {
testWidgets('calcola e mostra il risultato formattato', (tester) async {
provider.select(_riso);
await tester.pumpApp(_page(provider));
await tester.enterText(find.byType(TextField), '100');
await tester.pump();
// 100 * 3.0 = 300, intero → senza decimali
expect(find.text('300'), findsOneWidget);
expect(find.textContaining('fattore di resa 3.0'), findsOneWidget);
});
testWidgets('input non numerico mostra il placeholder —', (tester) async {
provider.select(_riso);
await tester.pumpApp(_page(provider));
await tester.enterText(find.byType(TextField), 'abc');
await tester.pump();
expect(find.text('—'), findsOneWidget);
});
testWidgets('swap inverte la direzione e azzera il risultato',
(tester) async {
provider.select(_riso);
await tester.pumpApp(_page(provider));
await tester.enterText(find.byType(TextField), '100');
await tester.pump();
expect(find.text('300'), findsOneWidget);
await tester.tap(find.byIcon(Icons.swap_horiz));
await tester.pump();
expect(provider.rawToCooked, isFalse);
expect(find.text('300'), findsNothing);
});
testWidgets('"Cambia" torna alla ricerca', (tester) async {
provider.select(_riso);
await tester.pumpApp(_page(provider));
await tester.tap(find.text('Cambia'));
await tester.pump();
expect(find.text('Cerca un alimento per iniziare'), findsOneWidget);
expect(provider.selected, isNull);
});
});
}
test/features/guide/pages/guide_page_test.dart
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import 'package:flutter_test/flutter_test.dart';
import 'package:biteplan/features/guide/presentation/pages/guide_page.dart';
import '../../../helpers/pump_app.dart';
void main() {
group('GuidePage', () {
testWidgets('mostra titolo e le tre tab', (tester) async {
await tester.pumpApp(const GuidePage());
expect(find.text('Guida'), findsOneWidget);
expect(find.text('Pasti'), findsOneWidget);
expect(find.text('Converti'), findsOneWidget);
expect(find.text('Spesa'), findsOneWidget);
});
testWidgets('la tab iniziale è Pasti', (tester) async {
await tester.pumpApp(const GuidePage());
expect(find.text('Aggiungere un alimento'), findsOneWidget);
});
testWidgets('la tab Converti mostra i suoi contenuti', (tester) async {
await tester.pumpApp(const GuidePage());
await tester.tap(find.text('Converti'));
await tester.pumpAndSettle();
expect(find.text('Come usarlo'), findsOneWidget);
expect(find.text('Alimenti disponibili'), findsOneWidget);
});
testWidgets('la tab Spesa mostra i suoi contenuti', (tester) async {
await tester.pumpApp(const GuidePage());
await tester.tap(find.text('Spesa'));
await tester.pumpAndSettle();
expect(find.text('Aggiungere un elemento'), findsOneWidget);
expect(find.text('Spuntare un elemento'), findsOneWidget);
});
});
}
test/features/guide/widgets/info_bottom_sheet_test.dart
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import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:biteplan/core/constants/app_constants.dart';
import 'package:biteplan/features/guide/presentation/widgets/info_bottom_sheet.dart';
import '../../../helpers/pump_app.dart';
Future<void> _openSheet(WidgetTester tester) async {
await tester.pumpApp(Scaffold(
body: Builder(
builder: (context) => Center(
child: FilledButton(
onPressed: () => showInfoBottomSheet(context),
child: const Text('apri'),
),
),
),
));
await tester.tap(find.text('apri'));
await tester.pumpAndSettle();
}
void main() {
group('InfoBottomSheet', () {
testWidgets('mostra nome app, versione, autore e licenza',
(tester) async {
await _openSheet(tester);
expect(find.text('BitePlan'), findsOneWidget);
expect(find.text('Versione $kAppVersion'), findsOneWidget);
expect(find.text('Autore'), findsOneWidget);
expect(find.text('Licenza'), findsOneWidget);
});
testWidgets('"Apri" sulla riga Guida naviga alla GuidePage',
(tester) async {
await _openSheet(tester);
await tester.tap(find.text('Apri'));
await tester.pumpAndSettle();
expect(find.text('Aggiungere un alimento'), findsOneWidget);
});
});
}
test/features/meal_planner/pages/meal_planner_page_test.dart
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import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:provider/provider.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:biteplan/features/meal_planner/presentation/pages/meal_planner_page.dart';
import 'package:biteplan/features/meal_planner/presentation/widgets/meal_card.dart';
import 'package:biteplan/features/meal_planner/providers/meal_planner_provider.dart';
import 'package:biteplan/features/shopping_list/providers/shopping_list_provider.dart';
import '../../../helpers/pump_app.dart';
Widget _page({
required MealPlannerProvider meals,
required ShoppingListProvider shopping,
VoidCallback? onGoShopping,
}) =>
MultiProvider(
providers: [
ChangeNotifierProvider.value(value: meals),
ChangeNotifierProvider.value(value: shopping),
],
child: Scaffold(
body: MealPlannerPage(onGoShopping: onGoShopping ?? () {}),
),
);
String get _todayId {
const ids = [
'',
'lunedi',
'martedi',
'mercoledi',
'giovedi',
'venerdi',
'sabato',
'domenica',
];
return ids[DateTime.now().weekday];
}
void main() {
late MealPlannerProvider meals;
late ShoppingListProvider shopping;
setUp(() async {
SharedPreferences.setMockInitialValues({});
meals = MealPlannerProvider();
shopping = ShoppingListProvider();
await meals.load();
await shopping.load();
});
Future<void> pumpPage(WidgetTester tester, {VoidCallback? onGoShopping}) async {
await tester.binding.setSurfaceSize(const Size(800, 1800));
addTearDown(() => tester.binding.setSurfaceSize(null));
await tester.pumpApp(
_page(meals: meals, shopping: shopping, onGoShopping: onGoShopping));
}
group('MealPlannerPage', () {
testWidgets('mostra le 7 card dei giorni', (tester) async {
await pumpPage(tester);
expect(find.byType(MealCard), findsNWidgets(7));
});
testWidgets('solo la card di oggi è inizialmente espansa', (tester) async {
await pumpPage(tester);
for (final card in
tester.widgetList<MealCard>(find.byType(MealCard))) {
expect(card.initiallyExpanded, card.dayId == _todayId,
reason: card.dayId);
}
});
testWidgets('"Condividi" è disabilitato con piano vuoto', (tester) async {
await pumpPage(tester);
final button = tester.widget<OutlinedButton>(
find.widgetWithText(OutlinedButton, 'Condividi'));
expect(button.onPressed, isNull);
});
testWidgets('"Condividi" è abilitato con almeno un pasto', (tester) async {
meals.addItem('lunedi', 'pranzo', 'pasta');
await pumpPage(tester);
final button = tester.widget<OutlinedButton>(
find.widgetWithText(OutlinedButton, 'Condividi'));
expect(button.onPressed, isNotNull);
});
testWidgets('"Svuota piano" appare solo con pasti presenti',
(tester) async {
await pumpPage(tester);
expect(find.text('Svuota piano'), findsNothing);
meals.addItem('lunedi', 'pranzo', 'pasta');
await tester.pump();
expect(find.text('Svuota piano'), findsOneWidget);
});
testWidgets('"Genera lista" popola la spesa e chiama onGoShopping',
(tester) async {
meals.addItem('lunedi', 'pranzo', 'pasta');
meals.addItem('martedi', 'cena', 'pollo');
var navigated = false;
await pumpPage(tester, onGoShopping: () => navigated = true);
await tester.tap(find.text('Genera lista della spesa'));
await tester.pump();
expect(navigated, isTrue);
expect(shopping.items.map((i) => i.name),
containsAll(['pasta', 'pollo']));
});
testWidgets('"Svuota piano" con Annulla mantiene i pasti', (tester) async {
meals.addItem('lunedi', 'pranzo', 'pasta');
await pumpPage(tester);
await tester.tap(find.widgetWithText(OutlinedButton, 'Svuota piano'));
await tester.pumpAndSettle();
await tester.tap(find.text('Annulla'));
await tester.pumpAndSettle();
expect(meals.plan.hasAnyMeal, isTrue);
});
testWidgets('"Svuota piano" con Svuota azzera il piano', (tester) async {
meals.addItem('lunedi', 'pranzo', 'pasta');
await pumpPage(tester);
await tester.tap(find.widgetWithText(OutlinedButton, 'Svuota piano'));
await tester.pumpAndSettle();
await tester.tap(find.text('Svuota'));
await tester.pumpAndSettle();
expect(meals.plan.hasAnyMeal, isFalse);
});
});
}
test/features/meal_planner/widgets/qr_share_sheet_test.dart
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import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:qr_flutter/qr_flutter.dart';
import 'package:biteplan/core/constants/app_constants.dart';
import 'package:biteplan/features/meal_planner/models/meal_plan.dart';
import 'package:biteplan/features/meal_planner/presentation/widgets/qr_share_sheet.dart';
import '../../../helpers/pump_app.dart';
MealPlan _planWith(Map<String, DayPlan> overrides) => MealPlan({
...Map.fromEntries(kDayIds.map((d) => MapEntry(d, DayPlan()))),
...overrides,
});
Future<void> _openSheet(WidgetTester tester, MealPlan plan) async {
await tester.pumpApp(Scaffold(
body: Builder(
builder: (context) => Center(
child: FilledButton(
onPressed: () => showQrShareSheet(context, plan),
child: const Text('apri'),
),
),
),
));
await tester.tap(find.text('apri'));
await tester.pumpAndSettle();
}
void main() {
group('QrShareSheet', () {
testWidgets('piano valido mostra il QR code', (tester) async {
final plan = _planWith({
'lunedi': DayPlan(pranzo: ['pasta'])
});
await _openSheet(tester, plan);
expect(find.text('Condividi piano'), findsOneWidget);
expect(find.byType(QrImageView), findsOneWidget);
});
testWidgets('piano troppo grande mostra il messaggio di errore',
(tester) async {
final plan = _planWith({
for (final d in kDayIds)
d: DayPlan(
colazione: List.generate(
30, (i) => 'alimento molto lungo numero $i della colazione'),
pranzo: List.generate(
30, (i) => 'alimento molto lungo numero $i del pranzo'),
),
});
await _openSheet(tester, plan);
expect(find.textContaining('Dati troppo grandi'), findsOneWidget);
expect(find.byType(QrImageView), findsNothing);
});
testWidgets('il pulsante chiudi fa scomparire il foglio', (tester) async {
final plan = _planWith({
'lunedi': DayPlan(pranzo: ['pasta'])
});
await _openSheet(tester, plan);
await tester.tap(find.byIcon(Icons.close));
await tester.pumpAndSettle();
expect(find.text('Condividi piano'), findsNothing);
});
});
}
test/features/shopping_list/pages/shopping_list_page_test.dart
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import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:provider/provider.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:biteplan/features/shopping_list/presentation/pages/shopping_list_page.dart';
import 'package:biteplan/features/shopping_list/providers/shopping_list_provider.dart';
import '../../../helpers/pump_app.dart';
Widget _page(ShoppingListProvider provider) => ChangeNotifierProvider.value(
value: provider,
child: const Scaffold(body: ShoppingListPage()),
);
void main() {
late ShoppingListProvider provider;
setUp(() async {
SharedPreferences.setMockInitialValues({});
provider = ShoppingListProvider();
await provider.load();
});
group('ShoppingListPage', () {
testWidgets('lista vuota mostra EmptyState', (tester) async {
await tester.pumpApp(_page(provider));
expect(find.text('Lista vuota'), findsOneWidget);
});
testWidgets('aggiunge un elemento con il pulsante +', (tester) async {
await tester.pumpApp(_page(provider));
await tester.enterText(find.byType(TextField), 'pane');
await tester.tap(find.byIcon(Icons.add));
await tester.pump();
expect(find.text('pane'), findsOneWidget);
expect(provider.items, hasLength(1));
});
testWidgets('aggiunge un elemento con Invio', (tester) async {
await tester.pumpApp(_page(provider));
await tester.enterText(find.byType(TextField), 'latte');
await tester.testTextInput.receiveAction(TextInputAction.done);
await tester.pump();
expect(find.text('latte'), findsOneWidget);
});
testWidgets('testo vuoto o solo spazi non aggiunge nulla', (tester) async {
await tester.pumpApp(_page(provider));
await tester.enterText(find.byType(TextField), ' ');
await tester.tap(find.byIcon(Icons.add));
await tester.pump();
expect(find.text('Lista vuota'), findsOneWidget);
expect(provider.items, isEmpty);
});
testWidgets('il contatore usa il singolare con 1 completato',
(tester) async {
provider.add('pane');
provider.add('latte');
provider.toggle(provider.items.first.id);
await tester.pumpApp(_page(provider));
expect(find.text('1 / 2 completato'), findsOneWidget);
});
testWidgets('il contatore usa il plurale con più completati',
(tester) async {
provider.add('pane');
provider.add('latte');
for (final item in [...provider.items]) {
provider.toggle(item.id);
}
await tester.pumpApp(_page(provider));
expect(find.text('2 / 2 completati'), findsOneWidget);
});
testWidgets('la sezione COMPLETATI appare solo con elementi spuntati',
(tester) async {
provider.add('pane');
await tester.pumpApp(_page(provider));
expect(find.textContaining('COMPLETATI'), findsNothing);
provider.toggle(provider.items.first.id);
await tester.pump();
expect(find.text('COMPLETATI (1)'), findsOneWidget);
});
testWidgets('"Svuota lista" con Annulla non svuota', (tester) async {
provider.add('pane');
await tester.pumpApp(_page(provider));
await tester.tap(find.widgetWithText(OutlinedButton, 'Svuota lista'));
await tester.pumpAndSettle();
await tester.tap(find.text('Annulla'));
await tester.pumpAndSettle();
expect(provider.items, hasLength(1));
expect(find.text('pane'), findsOneWidget);
});
testWidgets('"Svuota lista" con Svuota svuota tutto', (tester) async {
provider.add('pane');
await tester.pumpApp(_page(provider));
await tester.tap(find.widgetWithText(OutlinedButton, 'Svuota lista'));
await tester.pumpAndSettle();
await tester.tap(find.text('Svuota'));
await tester.pumpAndSettle();
expect(provider.items, isEmpty);
expect(find.text('Lista vuota'), findsOneWidget);
});
});
}
test/shared/widgets/empty_state_test.dart
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import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:biteplan/shared/widgets/empty_state.dart';
import '../../helpers/pump_app.dart';
void main() {
group('EmptyState', () {
testWidgets('mostra icona e titolo', (tester) async {
await tester.pumpApp(const Scaffold(
body: EmptyState(icon: Icons.search, title: 'Nessun elemento'),
));
expect(find.byIcon(Icons.search), findsOneWidget);
expect(find.text('Nessun elemento'), findsOneWidget);
});
testWidgets('mostra il sottotitolo quando presente', (tester) async {
await tester.pumpApp(const Scaffold(
body: EmptyState(
icon: Icons.search,
title: 'Titolo',
subtitle: 'Sottotitolo di prova',
),
));
expect(find.text('Sottotitolo di prova'), findsOneWidget);
});
testWidgets('nessun sottotitolo quando assente', (tester) async {
await tester.pumpApp(const Scaffold(
body: EmptyState(icon: Icons.search, title: 'Titolo'),
));
expect(find.byType(Text), findsOneWidget);
});
});
}