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// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/cupertino.dart';
import 'package:flutter_test/flutter_test.dart';
void main() {
testWidgets('Use home', (WidgetTester tester) async {
await tester.pumpWidget(
CupertinoApp(
home: CupertinoTabView(
builder: (BuildContext context) => const Text('home'),
),
),
);
expect(find.text('home'), findsOneWidget);
});
testWidgets('Use routes', (WidgetTester tester) async {
await tester.pumpWidget(
CupertinoApp(
home: CupertinoTabView(
routes: <String, WidgetBuilder>{
'/': (BuildContext context) => const Text('first route'),
},
),
),
);
expect(find.text('first route'), findsOneWidget);
});
testWidgets('Use home and named routes', (WidgetTester tester) async {
await tester.pumpWidget(
CupertinoApp(
home: CupertinoTabView(
builder: (BuildContext context) {
return CupertinoButton(
child: const Text('go to second page'),
onPressed: () {
Navigator.of(context).pushNamed('/2');
},
);
},
routes: <String, WidgetBuilder>{
'/2': (BuildContext context) => const Text('second named route'),
},
),
),
);
expect(find.text('go to second page'), findsOneWidget);
await tester.tap(find.text('go to second page'));
await tester.pump();
await tester.pump(const Duration(milliseconds: 300));
expect(find.text('second named route'), findsOneWidget);
});
testWidgets('Use onGenerateRoute', (WidgetTester tester) async {
await tester.pumpWidget(
CupertinoApp(
home: CupertinoTabView(
onGenerateRoute: (RouteSettings settings) {
if (settings.name == Navigator.defaultRouteName) {
return CupertinoPageRoute<void>(
settings: settings,
builder: (BuildContext context) {
return const Text('generated home');
},
);
}
return null;
},
),
),
);
expect(find.text('generated home'), findsOneWidget);
});
testWidgets('Use onUnknownRoute', (WidgetTester tester) async {
late String unknownForRouteCalled;
await tester.pumpWidget(
CupertinoApp(
home: CupertinoTabView(
onUnknownRoute: (RouteSettings settings) {
unknownForRouteCalled = settings.name!;
return null;
},
),
),
);
expect(tester.takeException(), isFlutterError);
expect(unknownForRouteCalled, '/');
// Work-around for https://github.com/flutter/flutter/issues/65655.
await tester.pumpWidget(Container());
expect(tester.takeException(), isAssertionError);
});
testWidgets('Can use navigatorKey to navigate', (WidgetTester tester) async {
final GlobalKey<NavigatorState> key = GlobalKey();
await tester.pumpWidget(
CupertinoApp(
home: CupertinoTabView(
navigatorKey: key,
builder: (BuildContext context) => const Text('first route'),
routes: <String, WidgetBuilder>{
'/2': (BuildContext context) => const Text('second route'),
},
),
),
);
key.currentState!.pushNamed('/2');
await tester.pump();
await tester.pump(const Duration(milliseconds: 300));
expect(find.text('second route'), findsOneWidget);
});
testWidgets('Changing the key resets the navigator', (WidgetTester tester) async {
final GlobalKey<NavigatorState> key = GlobalKey();
await tester.pumpWidget(
CupertinoApp(
home: CupertinoTabView(
builder: (BuildContext context) {
return CupertinoButton(
child: const Text('go to second page'),
onPressed: () {
Navigator.of(context).pushNamed('/2');
},
);
},
routes: <String, WidgetBuilder>{
'/2': (BuildContext context) => const Text('second route'),
},
),
),
);
expect(find.text('go to second page'), findsOneWidget);
await tester.tap(find.text('go to second page'));
await tester.pump();
await tester.pump(const Duration(milliseconds: 300));
expect(find.text('second route'), findsOneWidget);
await tester.pumpWidget(
CupertinoApp(
home: CupertinoTabView(
key: key,
builder: (BuildContext context) {
return CupertinoButton(
child: const Text('go to second page'),
onPressed: () {
Navigator.of(context).pushNamed('/2');
},
);
},
routes: <String, WidgetBuilder>{
'/2': (BuildContext context) => const Text('second route'),
},
),
),
);
// The stack is gone and we're back to a re-built page 1.
expect(find.text('go to second page'), findsOneWidget);
expect(find.text('second route'), findsNothing);
});
testWidgets('Throws FlutterError when onUnknownRoute is null', (WidgetTester tester) async {
final GlobalKey<NavigatorState> key = GlobalKey();
await tester.pumpWidget(
CupertinoApp(
home: CupertinoTabView(
navigatorKey: key,
builder: (BuildContext context) => const Text('first route'),
),
),
);
late FlutterError error;
try {
key.currentState!.pushNamed('/2');
} on FlutterError catch (e) {
error = e;
}
expect(error, isNotNull);
expect(
error.toStringDeep(),
equalsIgnoringHashCodes(
'FlutterError\n'
' Could not find a generator for route RouteSettings("/2", null) in\n'
' the _CupertinoTabViewState.\n'
' Generators for routes are searched for in the following order:\n'
' 1. For the "/" route, the "builder" property, if non-null, is\n'
' used.\n'
' 2. Otherwise, the "routes" table is used, if it has an entry for\n'
' the route.\n'
' 3. Otherwise, onGenerateRoute is called. It should return a\n'
' non-null value for any valid route not handled by "builder" and\n'
' "routes".\n'
' 4. Finally if all else fails onUnknownRoute is called.\n'
' Unfortunately, onUnknownRoute was not set.\n',
),
);
});
testWidgets('Throws FlutterError when onUnknownRoute returns null', (WidgetTester tester) async {
final GlobalKey<NavigatorState> key = GlobalKey<NavigatorState>();
await tester.pumpWidget(
CupertinoApp(
home: CupertinoTabView(
navigatorKey: key,
builder: (BuildContext context) => const Text('first route'),
onUnknownRoute: (_) => null,
),
),
);
late FlutterError error;
try {
key.currentState!.pushNamed('/2');
} on FlutterError catch (e) {
error = e;
}
expect(error, isNotNull);
expect(
error.toStringDeep(),
equalsIgnoringHashCodes(
'FlutterError\n'
' The onUnknownRoute callback returned null.\n'
' When the _CupertinoTabViewState requested the route\n'
' RouteSettings("/2", null) from its onUnknownRoute callback, the\n'
' callback returned null. Such callbacks must never return null.\n',
),
);
});
testWidgets('Navigator of CupertinoTabView restores state', (WidgetTester tester) async {
await tester.pumpWidget(
CupertinoApp(
restorationScopeId: 'app',
home: CupertinoTabView(
restorationScopeId: 'tab',
builder: (BuildContext context) => CupertinoButton(
child: const Text('home'),
onPressed: () {
Navigator.of(context).restorablePushNamed('/2');
},
),
routes: <String, WidgetBuilder>{
'/2' : (BuildContext context) => const Text('second route'),
},
),
),
);
expect(find.text('home'), findsOneWidget);
await tester.tap(find.text('home'));
await tester.pumpAndSettle();
expect(find.text('home'), findsNothing);
expect(find.text('second route'), findsOneWidget);
final TestRestorationData data = await tester.getRestorationData();
await tester.restartAndRestore();
expect(find.text('home'), findsNothing);
expect(find.text('second route'), findsOneWidget);
Navigator.of(tester.element(find.text('second route'))).pop();
await tester.pumpAndSettle();
expect(find.text('home'), findsOneWidget);
expect(find.text('second route'), findsNothing);
await tester.restoreFrom(data);
expect(find.text('home'), findsNothing);
expect(find.text('second route'), findsOneWidget);
Navigator.of(tester.element(find.text('second route'))).pop();
await tester.pumpAndSettle();
expect(find.text('home'), findsOneWidget);
expect(find.text('second route'), findsNothing);
});
}