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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/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
void main() {
testWidgets('Default PageTransitionsTheme platform', (WidgetTester tester) async {
await tester.pumpWidget(const MaterialApp(home: Text('home')));
final PageTransitionsTheme theme = Theme.of(tester.element(find.text('home'))).pageTransitionsTheme;
expect(theme.builders, isNotNull);
if (kIsWeb) {
// There aren't any default transitions defined for web
expect(theme.builders, isEmpty);
} else {
// There should only be builders for the mobile platforms.
for (final TargetPlatform platform in TargetPlatform.values) {
switch (platform) {
case TargetPlatform.android:
case TargetPlatform.iOS:
case TargetPlatform.fuchsia:
expect(theme.builders[platform], isNotNull,
reason: 'theme builder for $platform is null');
break;
case TargetPlatform.linux:
case TargetPlatform.macOS:
case TargetPlatform.windows:
expect(theme.builders[platform], isNull,
reason: 'theme builder for $platform is not null');
break;
}
}
}
});
testWidgets('Default PageTransitionsTheme builds a CupertinoPageTransition', (WidgetTester tester) async {
final Map<String, WidgetBuilder> routes = <String, WidgetBuilder>{
'/': (BuildContext context) => Material(
child: TextButton(
child: const Text('push'),
onPressed: () { Navigator.of(context).pushNamed('/b'); },
),
),
'/b': (BuildContext context) => const Text('page b'),
};
await tester.pumpWidget(
MaterialApp(
routes: routes,
),
);
expect(Theme.of(tester.element(find.text('push'))).platform, debugDefaultTargetPlatformOverride);
expect(find.byType(CupertinoPageTransition), findsOneWidget);
await tester.tap(find.text('push'));
await tester.pumpAndSettle();
expect(find.text('page b'), findsOneWidget);
expect(find.byType(CupertinoPageTransition), findsOneWidget);
},
variant: TargetPlatformVariant.only(TargetPlatform.iOS),
skip: kIsWeb, // [intended] no default transitions on the web.
);
testWidgets('Default PageTransitionsTheme builds a _FadeUpwardsPageTransition for android', (WidgetTester tester) async {
final Map<String, WidgetBuilder> routes = <String, WidgetBuilder>{
'/': (BuildContext context) => Material(
child: TextButton(
child: const Text('push'),
onPressed: () { Navigator.of(context).pushNamed('/b'); },
),
),
'/b': (BuildContext context) => const Text('page b'),
};
await tester.pumpWidget(
MaterialApp(
routes: routes,
),
);
Finder findFadeUpwardsPageTransition() {
return find.descendant(
of: find.byType(MaterialApp),
matching: find.byWidgetPredicate((Widget w) => '${w.runtimeType}' == '_FadeUpwardsPageTransition'),
);
}
expect(Theme.of(tester.element(find.text('push'))).platform, debugDefaultTargetPlatformOverride);
expect(findFadeUpwardsPageTransition(), findsOneWidget);
await tester.tap(find.text('push'));
await tester.pumpAndSettle();
expect(find.text('page b'), findsOneWidget);
expect(findFadeUpwardsPageTransition(), findsOneWidget);
},
variant: TargetPlatformVariant.only(TargetPlatform.android),
skip: kIsWeb, // [intended] no default transitions on the web.
);
testWidgets('PageTransitionsTheme override builds a _OpenUpwardsPageTransition', (WidgetTester tester) async {
final Map<String, WidgetBuilder> routes = <String, WidgetBuilder>{
'/': (BuildContext context) => Material(
child: TextButton(
child: const Text('push'),
onPressed: () { Navigator.of(context).pushNamed('/b'); },
),
),
'/b': (BuildContext context) => const Text('page b'),
};
await tester.pumpWidget(
MaterialApp(
theme: ThemeData(
pageTransitionsTheme: const PageTransitionsTheme(
builders: <TargetPlatform, PageTransitionsBuilder>{
TargetPlatform.android: OpenUpwardsPageTransitionsBuilder(), // creates a _OpenUpwardsPageTransition
},
),
),
routes: routes,
),
);
Finder findOpenUpwardsPageTransition() {
return find.descendant(
of: find.byType(MaterialApp),
matching: find.byWidgetPredicate((Widget w) => '${w.runtimeType}' == '_OpenUpwardsPageTransition'),
);
}
expect(Theme.of(tester.element(find.text('push'))).platform, debugDefaultTargetPlatformOverride);
expect(findOpenUpwardsPageTransition(), findsOneWidget);
await tester.tap(find.text('push'));
await tester.pumpAndSettle();
expect(find.text('page b'), findsOneWidget);
expect(findOpenUpwardsPageTransition(), findsOneWidget);
},
variant: TargetPlatformVariant.only(TargetPlatform.android),
skip: kIsWeb, // [intended] no default transitions on the web.
);
testWidgets('PageTransitionsTheme override builds a _ZoomPageTransition', (WidgetTester tester) async {
final Map<String, WidgetBuilder> routes = <String, WidgetBuilder>{
'/': (BuildContext context) => Material(
child: TextButton(
child: const Text('push'),
onPressed: () { Navigator.of(context).pushNamed('/b'); },
),
),
'/b': (BuildContext context) => const Text('page b'),
};
await tester.pumpWidget(
MaterialApp(
theme: ThemeData(
pageTransitionsTheme: const PageTransitionsTheme(
builders: <TargetPlatform, PageTransitionsBuilder>{
TargetPlatform.android: ZoomPageTransitionsBuilder(), // creates a _ZoomPageTransition
},
),
),
routes: routes,
),
);
Finder findZoomPageTransition() {
return find.descendant(
of: find.byType(MaterialApp),
matching: find.byWidgetPredicate((Widget w) => '${w.runtimeType}' == '_ZoomPageTransition'),
);
}
expect(Theme.of(tester.element(find.text('push'))).platform, debugDefaultTargetPlatformOverride);
expect(findZoomPageTransition(), findsOneWidget);
await tester.tap(find.text('push'));
await tester.pumpAndSettle();
expect(find.text('page b'), findsOneWidget);
expect(findZoomPageTransition(), findsOneWidget);
},
variant: TargetPlatformVariant.only(TargetPlatform.android),
skip: kIsWeb, // [intended] no default transitions on the web.
);
testWidgets('_ZoomPageTransition only cause child widget built once', (WidgetTester tester) async {
// Regression test for https://github.com/flutter/flutter/issues/58345
int builtCount = 0;
final Map<String, WidgetBuilder> routes = <String, WidgetBuilder>{
'/': (BuildContext context) => Material(
child: TextButton(
child: const Text('push'),
onPressed: () { Navigator.of(context).pushNamed('/b'); },
),
),
'/b': (BuildContext context) => StatefulBuilder(
builder: (BuildContext context, StateSetter setState) {
builtCount++; // Increase [builtCount] each time the widget build
return TextButton(
child: const Text('pop'),
onPressed: () { Navigator.pop(context); },
);
},
),
};
await tester.pumpWidget(
MaterialApp(
theme: ThemeData(
pageTransitionsTheme: const PageTransitionsTheme(
builders: <TargetPlatform, PageTransitionsBuilder>{
TargetPlatform.android: ZoomPageTransitionsBuilder(), // creates a _ZoomPageTransition
},
),
),
routes: routes,
),
);
// No matter push or pop was called, the child widget should built only once.
await tester.tap(find.text('push'));
await tester.pumpAndSettle();
expect(builtCount, 1);
await tester.tap(find.text('pop'));
await tester.pumpAndSettle();
expect(builtCount, 1);
},
variant: TargetPlatformVariant.only(TargetPlatform.android),
skip: kIsWeb, // [intended] no default transitions on the web.
);
}