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This auto-formats all *.dart files in the repository outside of the `engine` subdirectory and enforces that these files stay formatted with a presubmit check. **Reviewers:** Please carefully review all the commits except for the one titled "formatted". The "formatted" commit was auto-generated by running `dev/tools/format.sh -a -f`. The other commits were hand-crafted to prepare the repo for the formatting change. I recommend reviewing the commits one-by-one via the "Commits" tab and avoiding Github's "Files changed" tab as it will likely slow down your browser because of the size of this PR. --------- Co-authored-by: Kate Lovett <katelovett@google.com> Co-authored-by: LongCatIsLooong <31859944+LongCatIsLooong@users.noreply.github.com>
106 lines
3.4 KiB
Dart
106 lines
3.4 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/widgets.dart';
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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testWidgets('GridView default control', (WidgetTester tester) async {
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: Center(child: GridView.count(crossAxisCount: 1)),
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),
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);
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});
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// Tests https://github.com/flutter/flutter/issues/5522
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testWidgets('GridView displays correct children with nonzero padding', (
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WidgetTester tester,
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) async {
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const EdgeInsets padding = EdgeInsets.fromLTRB(0.0, 100.0, 0.0, 0.0);
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final Widget testWidget = Directionality(
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textDirection: TextDirection.ltr,
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child: Align(
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child: SizedBox(
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height: 800.0,
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width: 300.0, // forces the grid children to be 300..300
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child: GridView.count(
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crossAxisCount: 1,
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padding: padding,
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children:
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List<Widget>.generate(10, (int index) {
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return Text('$index', key: ValueKey<int>(index));
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}).toList(),
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),
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),
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),
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);
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await tester.pumpWidget(testWidget);
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// screen is 600px high, and has the following items:
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// 100..400 = 0
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// 400..700 = 1
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await tester.pump();
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expect(find.text('0'), findsOneWidget);
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expect(find.text('1'), findsOneWidget);
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expect(find.text('2'), findsNothing);
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expect(find.text('3'), findsNothing);
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await tester.drag(find.text('1'), const Offset(0.0, -500.0));
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await tester.pump();
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// -100..300 = 1
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// 300..600 = 2
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// 600..600 = 3
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expect(find.text('0'), findsNothing);
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expect(find.text('1'), findsOneWidget);
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expect(find.text('2'), findsOneWidget);
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expect(find.text('3'), findsOneWidget);
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expect(find.text('4'), findsNothing);
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expect(find.text('5'), findsNothing);
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await tester.drag(find.text('1'), const Offset(0.0, 150.0));
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await tester.pump();
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// Child '0' is now back onscreen, but by less than `padding.top`.
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// -250..050 = 0
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// 050..450 = 1
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// 450..750 = 2
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expect(find.text('0'), findsOneWidget);
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expect(find.text('1'), findsOneWidget);
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expect(find.text('2'), findsOneWidget);
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expect(find.text('3'), findsNothing);
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expect(find.text('4'), findsNothing);
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});
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testWidgets('GridView.count() fixed itemExtent, scroll to end, append, scroll', (
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WidgetTester tester,
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) async {
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// Regression test for https://github.com/flutter/flutter/issues/9506
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Widget buildFrame(int itemCount) {
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return Directionality(
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textDirection: TextDirection.ltr,
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child: GridView.count(
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crossAxisCount: itemCount,
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children: List<Widget>.generate(itemCount, (int index) {
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return SizedBox(height: 200.0, child: Text('item $index'));
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}),
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),
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);
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}
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await tester.pumpWidget(buildFrame(3));
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expect(find.text('item 0'), findsOneWidget);
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expect(find.text('item 1'), findsOneWidget);
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expect(find.text('item 2'), findsOneWidget);
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await tester.pumpWidget(buildFrame(4));
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final TestGesture gesture = await tester.startGesture(const Offset(0.0, 300.0));
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await gesture.moveBy(const Offset(0.0, -200.0));
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await tester.pumpAndSettle();
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expect(find.text('item 3'), findsOneWidget);
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});
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}
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