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WIP Commits separated as follows: - Update lints in analysis_options files - Run `dart fix --apply` - Clean up leftover analysis issues - Run `dart format .` in the right places. Local analysis and testing passes. Checking CI now. Part of https://github.com/flutter/flutter/issues/178827 - Adoption of flutter_lints in examples/api coming in a separate change (cc @loic-sharma) ## Pre-launch Checklist - [ ] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [ ] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [ ] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [ ] I signed the [CLA]. - [ ] I listed at least one issue that this PR fixes in the description above. - [ ] I updated/added relevant documentation (doc comments with `///`). - [ ] I added new tests to check the change I am making, or this PR is [test-exempt]. - [ ] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [ ] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. **Note**: The Flutter team is currently trialing the use of [Gemini Code Assist for GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code). Comments from the `gemini-code-assist` bot should not be taken as authoritative feedback from the Flutter team. If you find its comments useful you can update your code accordingly, but if you are unsure or disagree with the feedback, please feel free to wait for a Flutter team member's review for guidance on which automated comments should be addressed. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
651 lines
21 KiB
Dart
651 lines
21 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/cupertino.dart';
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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testWidgets('test iOS page transition (LTR)', (WidgetTester tester) async {
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await tester.pumpWidget(
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CupertinoApp(
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onGenerateRoute: (RouteSettings settings) {
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return CupertinoPageRoute<void>(
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settings: settings,
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builder: (BuildContext context) {
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final pageNumber = settings.name == '/' ? '1' : '2';
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return Center(child: Text('Page $pageNumber'));
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},
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);
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},
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),
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);
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final Offset widget1InitialTopLeft = tester.getTopLeft(find.text('Page 1'));
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tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next');
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 150));
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Offset widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1'));
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Offset widget2TopLeft = tester.getTopLeft(find.text('Page 2'));
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// Page 1 is moving to the left.
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expect(widget1TransientTopLeft.dx, lessThan(widget1InitialTopLeft.dx));
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// Page 1 isn't moving vertically.
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expect(widget1TransientTopLeft.dy, equals(widget1InitialTopLeft.dy));
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// iOS transition is horizontal only.
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expect(widget1InitialTopLeft.dy, equals(widget2TopLeft.dy));
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// Page 2 is coming in from the right.
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expect(widget2TopLeft.dx, greaterThan(widget1InitialTopLeft.dx));
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// Will need to be changed if the animation curve or duration changes.
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expect(widget1TransientTopLeft.dx, moreOrLessEquals(158, epsilon: 1.0));
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await tester.pumpAndSettle();
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// Page 2 covers page 1.
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expect(find.text('Page 1'), findsNothing);
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expect(find.text('Page 2'), isOnstage);
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tester.state<NavigatorState>(find.byType(Navigator)).pop();
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 100));
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widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1'));
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widget2TopLeft = tester.getTopLeft(find.text('Page 2'));
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// Page 1 is coming back from the left.
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expect(widget1TransientTopLeft.dx, lessThan(widget1InitialTopLeft.dx));
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// Page 1 isn't moving vertically.
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expect(widget1TransientTopLeft.dy, equals(widget1InitialTopLeft.dy));
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// iOS transition is horizontal only.
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expect(widget1InitialTopLeft.dy, equals(widget2TopLeft.dy));
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// Page 2 is leaving towards the right.
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expect(widget2TopLeft.dx, greaterThan(widget1InitialTopLeft.dx));
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// Will need to be changed if the animation curve or duration changes.
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expect(widget1TransientTopLeft.dx, moreOrLessEquals(220, epsilon: 1.0));
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await tester.pumpAndSettle();
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expect(find.text('Page 1'), isOnstage);
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expect(find.text('Page 2'), findsNothing);
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widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1'));
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// Page 1 is back where it started.
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expect(widget1InitialTopLeft, equals(widget1TransientTopLeft));
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});
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testWidgets('test iOS page transition (RTL)', (WidgetTester tester) async {
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await tester.pumpWidget(
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CupertinoApp(
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localizationsDelegates: const <LocalizationsDelegate<dynamic>>[
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RtlOverrideWidgetsDelegate(),
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],
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onGenerateRoute: (RouteSettings settings) {
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return CupertinoPageRoute<void>(
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settings: settings,
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builder: (BuildContext context) {
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final pageNumber = settings.name == '/' ? '1' : '2';
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return Center(child: Text('Page $pageNumber'));
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},
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);
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},
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),
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);
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await tester.pump(); // to load the localization, since it doesn't use a synchronous future
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final Offset widget1InitialTopLeft = tester.getTopLeft(find.text('Page 1'));
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tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next');
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 150));
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Offset widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1'));
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Offset widget2TopLeft = tester.getTopLeft(find.text('Page 2'));
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// Page 1 is moving to the right.
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expect(widget1TransientTopLeft.dx, greaterThan(widget1InitialTopLeft.dx));
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// Page 1 isn't moving vertically.
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expect(widget1TransientTopLeft.dy, equals(widget1InitialTopLeft.dy));
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// iOS transition is horizontal only.
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expect(widget1InitialTopLeft.dy, equals(widget2TopLeft.dy));
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// Page 2 is coming in from the left.
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expect(widget2TopLeft.dx, lessThan(widget1InitialTopLeft.dx));
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await tester.pumpAndSettle();
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// Page 2 covers page 1.
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expect(find.text('Page 1'), findsNothing);
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expect(find.text('Page 2'), isOnstage);
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tester.state<NavigatorState>(find.byType(Navigator)).pop();
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 100));
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widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1'));
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widget2TopLeft = tester.getTopLeft(find.text('Page 2'));
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// Page 1 is coming back from the right.
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expect(widget1TransientTopLeft.dx, greaterThan(widget1InitialTopLeft.dx));
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// Page 1 isn't moving vertically.
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expect(widget1TransientTopLeft.dy, equals(widget1InitialTopLeft.dy));
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// iOS transition is horizontal only.
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expect(widget1InitialTopLeft.dy, equals(widget2TopLeft.dy));
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// Page 2 is leaving towards the left.
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expect(widget2TopLeft.dx, lessThan(widget1InitialTopLeft.dx));
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await tester.pumpAndSettle();
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expect(find.text('Page 1'), isOnstage);
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expect(find.text('Page 2'), findsNothing);
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widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1'));
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// Page 1 is back where it started.
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expect(widget1InitialTopLeft, equals(widget1TransientTopLeft));
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});
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testWidgets('test iOS fullscreen dialog transition', (WidgetTester tester) async {
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await tester.pumpWidget(const CupertinoApp(home: Center(child: Text('Page 1'))));
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final Offset widget1InitialTopLeft = tester.getTopLeft(find.text('Page 1'));
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tester
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.state<NavigatorState>(find.byType(Navigator))
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.push(
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CupertinoPageRoute<void>(
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builder: (BuildContext context) {
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return const Center(child: Text('Page 2'));
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},
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fullscreenDialog: true,
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),
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);
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 100));
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Offset widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1'));
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Offset widget2TopLeft = tester.getTopLeft(find.text('Page 2'));
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// Page 1 doesn't move.
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expect(widget1TransientTopLeft, equals(widget1InitialTopLeft));
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// Fullscreen dialogs transitions vertically only.
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expect(widget1InitialTopLeft.dx, equals(widget2TopLeft.dx));
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// Page 2 is coming in from the bottom.
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expect(widget2TopLeft.dy, greaterThan(widget1InitialTopLeft.dy));
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await tester.pumpAndSettle();
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// Page 2 covers page 1.
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expect(find.text('Page 1'), findsNothing);
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expect(find.text('Page 2'), isOnstage);
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tester.state<NavigatorState>(find.byType(Navigator)).pop();
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await tester.pump();
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await tester.pump(const Duration(milliseconds: 100));
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widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1'));
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widget2TopLeft = tester.getTopLeft(find.text('Page 2'));
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// Page 1 doesn't move.
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expect(widget1TransientTopLeft, equals(widget1InitialTopLeft));
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// Fullscreen dialogs transitions vertically only.
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expect(widget1InitialTopLeft.dx, equals(widget2TopLeft.dx));
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// Page 2 is leaving towards the bottom.
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expect(widget2TopLeft.dy, greaterThan(widget1InitialTopLeft.dy));
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await tester.pumpAndSettle();
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expect(find.text('Page 1'), isOnstage);
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expect(find.text('Page 2'), findsNothing);
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widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1'));
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// Page 1 is back where it started.
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expect(widget1InitialTopLeft, equals(widget1TransientTopLeft));
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});
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testWidgets('test only edge swipes work (LTR)', (WidgetTester tester) async {
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await tester.pumpWidget(
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CupertinoApp(
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onGenerateRoute: (RouteSettings settings) {
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return CupertinoPageRoute<void>(
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settings: settings,
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builder: (BuildContext context) {
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final pageNumber = settings.name == '/' ? '1' : '2';
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return Center(child: Text('Page $pageNumber'));
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},
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);
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},
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),
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);
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tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next');
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await tester.pump();
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await tester.pump(const Duration(seconds: 1));
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// Page 2 covers page 1.
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expect(find.text('Page 1'), findsNothing);
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expect(find.text('Page 2'), isOnstage);
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// Drag from the middle to the right.
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TestGesture gesture = await tester.startGesture(const Offset(200.0, 200.0));
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await gesture.moveBy(const Offset(300.0, 0.0));
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await tester.pump();
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// Nothing should happen.
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expect(find.text('Page 1'), findsNothing);
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expect(find.text('Page 2'), isOnstage);
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// Drag from the right to the left.
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gesture = await tester.startGesture(const Offset(795.0, 200.0));
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await gesture.moveBy(const Offset(-300.0, 0.0));
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await tester.pump();
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// Nothing should happen.
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expect(find.text('Page 1'), findsNothing);
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expect(find.text('Page 2'), isOnstage);
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// Drag from the right to the further right.
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gesture = await tester.startGesture(const Offset(795.0, 200.0));
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await gesture.moveBy(const Offset(300.0, 0.0));
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await tester.pump();
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// Nothing should happen.
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expect(find.text('Page 1'), findsNothing);
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expect(find.text('Page 2'), isOnstage);
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// Now drag from the left edge.
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gesture = await tester.startGesture(const Offset(5.0, 200.0));
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await gesture.moveBy(const Offset(300.0, 0.0));
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await tester.pump();
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// Page 1 is now visible.
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expect(find.text('Page 1'), isOnstage);
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expect(find.text('Page 2'), isOnstage);
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});
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testWidgets('test edge swipes work with media query padding (LTR)', (WidgetTester tester) async {
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await tester.pumpWidget(
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CupertinoApp(
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builder: (BuildContext context, Widget? navigator) {
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return MediaQuery(
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data: const MediaQueryData(padding: EdgeInsets.only(left: 40)),
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child: navigator!,
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);
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},
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home: const Placeholder(),
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),
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);
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tester
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.state<NavigatorState>(find.byType(Navigator))
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.push(
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CupertinoPageRoute<void>(
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builder: (BuildContext context) => const Center(child: Text('Page 1')),
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),
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);
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await tester.pump();
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await tester.pump(const Duration(seconds: 2));
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tester
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.state<NavigatorState>(find.byType(Navigator))
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.push(
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CupertinoPageRoute<void>(
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builder: (BuildContext context) => const Center(child: Text('Page 2')),
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),
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);
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await tester.pump();
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await tester.pumpAndSettle();
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expect(find.text('Page 1'), findsNothing);
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expect(find.text('Page 2'), isOnstage);
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// Now drag from the left edge.
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final TestGesture gesture = await tester.startGesture(const Offset(35.0, 200.0));
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await gesture.moveBy(const Offset(300.0, 0.0));
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await tester.pump();
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await tester.pumpAndSettle();
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// Page 1 is now visible.
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expect(find.text('Page 1'), isOnstage);
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expect(find.text('Page 2'), isOnstage);
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});
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testWidgets('test edge swipes work with media query padding (RLT)', (WidgetTester tester) async {
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await tester.pumpWidget(
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CupertinoApp(
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builder: (BuildContext context, Widget? navigator) {
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return Directionality(
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textDirection: TextDirection.rtl,
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child: MediaQuery(
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data: const MediaQueryData(padding: EdgeInsets.only(right: 40)),
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child: navigator!,
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),
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);
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},
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home: const Placeholder(),
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),
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);
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tester
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.state<NavigatorState>(find.byType(Navigator))
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.push(
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CupertinoPageRoute<void>(
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builder: (BuildContext context) => const Center(child: Text('Page 1')),
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),
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);
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await tester.pump();
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await tester.pumpAndSettle();
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tester
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.state<NavigatorState>(find.byType(Navigator))
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.push(
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CupertinoPageRoute<void>(
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builder: (BuildContext context) => const Center(child: Text('Page 2')),
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),
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);
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await tester.pump();
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await tester.pumpAndSettle();
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expect(find.text('Page 1'), findsNothing);
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expect(find.text('Page 2'), isOnstage);
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// Now drag from the left edge.
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final TestGesture gesture = await tester.startGesture(const Offset(765.0, 200.0));
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await gesture.moveBy(const Offset(-300.0, 0.0));
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await tester.pump();
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await tester.pumpAndSettle();
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// Page 1 is now visible.
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expect(find.text('Page 1'), isOnstage);
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expect(find.text('Page 2'), isOnstage);
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});
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testWidgets('test only edge swipes work (RTL)', (WidgetTester tester) async {
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await tester.pumpWidget(
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CupertinoApp(
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localizationsDelegates: const <LocalizationsDelegate<dynamic>>[
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RtlOverrideWidgetsDelegate(),
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],
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onGenerateRoute: (RouteSettings settings) {
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return CupertinoPageRoute<void>(
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settings: settings,
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builder: (BuildContext context) {
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final pageNumber = settings.name == '/' ? '1' : '2';
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return Center(child: Text('Page $pageNumber'));
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},
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);
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},
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),
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);
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await tester.pump(); // to load the localization, since it doesn't use a synchronous future
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tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next');
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await tester.pump();
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await tester.pumpAndSettle();
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// Page 2 covers page 1.
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expect(find.text('Page 1'), findsNothing);
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expect(find.text('Page 2'), isOnstage);
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// Drag from the middle to the left.
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TestGesture gesture = await tester.startGesture(const Offset(200.0, 200.0));
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await gesture.moveBy(const Offset(-300.0, 0.0));
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await tester.pump();
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// Nothing should happen.
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expect(find.text('Page 1'), findsNothing);
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expect(find.text('Page 2'), isOnstage);
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// Drag from the left to the right.
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gesture = await tester.startGesture(const Offset(5.0, 200.0));
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await gesture.moveBy(const Offset(300.0, 0.0));
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await tester.pump();
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// Nothing should happen.
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expect(find.text('Page 1'), findsNothing);
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expect(find.text('Page 2'), isOnstage);
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// Drag from the left to the further left.
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gesture = await tester.startGesture(const Offset(5.0, 200.0));
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await gesture.moveBy(const Offset(-300.0, 0.0));
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await tester.pump();
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// Nothing should happen.
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expect(find.text('Page 1'), findsNothing);
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expect(find.text('Page 2'), isOnstage);
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// Now drag from the right edge.
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gesture = await tester.startGesture(const Offset(795.0, 200.0));
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await gesture.moveBy(const Offset(-300.0, 0.0));
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await tester.pump();
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// Page 1 is now visible.
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expect(find.text('Page 1'), isOnstage);
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expect(find.text('Page 2'), isOnstage);
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});
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testWidgets('test edge swipe then drop back at starting point works', (
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WidgetTester tester,
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) async {
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await tester.pumpWidget(
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CupertinoApp(
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onGenerateRoute: (RouteSettings settings) {
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return CupertinoPageRoute<void>(
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settings: settings,
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builder: (BuildContext context) {
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final pageNumber = settings.name == '/' ? '1' : '2';
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return Center(child: Text('Page $pageNumber'));
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},
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|
);
|
|
},
|
|
),
|
|
);
|
|
|
|
tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next');
|
|
|
|
await tester.pump();
|
|
await tester.pump(const Duration(seconds: 1));
|
|
|
|
expect(find.text('Page 1'), findsNothing);
|
|
expect(find.text('Page 2'), isOnstage);
|
|
|
|
final TestGesture gesture = await tester.startGesture(const Offset(5, 200));
|
|
await gesture.moveBy(const Offset(300, 0));
|
|
await tester.pump();
|
|
// Bring it exactly back such that there's nothing to animate when releasing.
|
|
await gesture.moveBy(const Offset(-300, 0));
|
|
await gesture.up();
|
|
await tester.pump();
|
|
|
|
expect(find.text('Page 1'), findsNothing);
|
|
expect(find.text('Page 2'), isOnstage);
|
|
});
|
|
|
|
testWidgets('CupertinoPage does not lose its state when transitioning out', (
|
|
WidgetTester tester,
|
|
) async {
|
|
final navigator = GlobalKey<NavigatorState>();
|
|
await tester.pumpWidget(KeepsStateTestWidget(navigatorKey: navigator));
|
|
expect(find.text('subpage'), findsOneWidget);
|
|
expect(find.text('home'), findsNothing);
|
|
|
|
navigator.currentState!.pop();
|
|
await tester.pump();
|
|
|
|
expect(find.text('subpage'), findsOneWidget);
|
|
expect(find.text('home'), findsOneWidget);
|
|
});
|
|
|
|
testWidgets('CupertinoPage restores its state', (WidgetTester tester) async {
|
|
await tester.pumpWidget(
|
|
RootRestorationScope(
|
|
restorationId: 'root',
|
|
child: MediaQuery(
|
|
data: const MediaQueryData(),
|
|
child: Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: Navigator(
|
|
onPopPage: (Route<dynamic> route, dynamic result) {
|
|
return false;
|
|
},
|
|
pages: const <Page<Object?>>[
|
|
CupertinoPage<void>(
|
|
restorationId: 'p1',
|
|
child: TestRestorableWidget(restorationId: 'p1'),
|
|
),
|
|
],
|
|
restorationScopeId: 'nav',
|
|
onGenerateRoute: (RouteSettings settings) {
|
|
return CupertinoPageRoute<void>(
|
|
settings: settings,
|
|
builder: (BuildContext context) {
|
|
return TestRestorableWidget(restorationId: settings.name!);
|
|
},
|
|
);
|
|
},
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
expect(find.text('p1'), findsOneWidget);
|
|
expect(find.text('count: 0'), findsOneWidget);
|
|
|
|
await tester.tap(find.text('increment'));
|
|
await tester.pump();
|
|
expect(find.text('count: 1'), findsOneWidget);
|
|
|
|
tester.state<NavigatorState>(find.byType(Navigator)).restorablePushNamed('p2');
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(find.text('p1'), findsNothing);
|
|
expect(find.text('p2'), findsOneWidget);
|
|
|
|
await tester.tap(find.text('increment'));
|
|
await tester.pump();
|
|
await tester.tap(find.text('increment'));
|
|
await tester.pump();
|
|
expect(find.text('count: 2'), findsOneWidget);
|
|
|
|
await tester.restartAndRestore();
|
|
|
|
expect(find.text('p2'), findsOneWidget);
|
|
expect(find.text('count: 2'), findsOneWidget);
|
|
|
|
tester.state<NavigatorState>(find.byType(Navigator)).pop();
|
|
await tester.pumpAndSettle();
|
|
|
|
expect(find.text('p1'), findsOneWidget);
|
|
expect(find.text('count: 1'), findsOneWidget);
|
|
});
|
|
}
|
|
|
|
class RtlOverrideWidgetsDelegate extends LocalizationsDelegate<WidgetsLocalizations> {
|
|
const RtlOverrideWidgetsDelegate();
|
|
@override
|
|
bool isSupported(Locale locale) => true;
|
|
@override
|
|
Future<WidgetsLocalizations> load(Locale locale) async => const RtlOverrideWidgetsLocalization();
|
|
@override
|
|
bool shouldReload(LocalizationsDelegate<WidgetsLocalizations> oldDelegate) => false;
|
|
}
|
|
|
|
class RtlOverrideWidgetsLocalization extends DefaultWidgetsLocalizations {
|
|
const RtlOverrideWidgetsLocalization();
|
|
@override
|
|
TextDirection get textDirection => TextDirection.rtl;
|
|
}
|
|
|
|
class KeepsStateTestWidget extends StatefulWidget {
|
|
const KeepsStateTestWidget({super.key, this.navigatorKey});
|
|
|
|
final Key? navigatorKey;
|
|
|
|
@override
|
|
State<KeepsStateTestWidget> createState() => _KeepsStateTestWidgetState();
|
|
}
|
|
|
|
class _KeepsStateTestWidgetState extends State<KeepsStateTestWidget> {
|
|
String? _subpage = 'subpage';
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return CupertinoApp(
|
|
home: Navigator(
|
|
key: widget.navigatorKey,
|
|
pages: <Page<void>>[
|
|
const CupertinoPage<void>(child: Text('home')),
|
|
if (_subpage != null) CupertinoPage<void>(child: Text(_subpage!)),
|
|
],
|
|
onPopPage: (Route<dynamic> route, dynamic result) {
|
|
if (!route.didPop(result)) {
|
|
return false;
|
|
}
|
|
setState(() {
|
|
_subpage = null;
|
|
});
|
|
return true;
|
|
},
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
class TestRestorableWidget extends StatefulWidget {
|
|
const TestRestorableWidget({super.key, required this.restorationId});
|
|
|
|
final String restorationId;
|
|
|
|
@override
|
|
State<StatefulWidget> createState() => _TestRestorableWidgetState();
|
|
}
|
|
|
|
class _TestRestorableWidgetState extends State<TestRestorableWidget> with RestorationMixin {
|
|
@override
|
|
String? get restorationId => widget.restorationId;
|
|
|
|
final RestorableInt counter = RestorableInt(0);
|
|
|
|
@override
|
|
void restoreState(RestorationBucket? oldBucket, bool initialRestore) {
|
|
registerForRestoration(counter, 'counter');
|
|
}
|
|
|
|
@override
|
|
void dispose() {
|
|
super.dispose();
|
|
counter.dispose();
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return Column(
|
|
children: <Widget>[
|
|
Text(widget.restorationId),
|
|
Text('count: ${counter.value}'),
|
|
CupertinoButton(
|
|
onPressed: () {
|
|
setState(() {
|
|
counter.value++;
|
|
});
|
|
},
|
|
child: const Text('increment'),
|
|
),
|
|
],
|
|
);
|
|
}
|
|
}
|