mirror of
https://github.com/flutter/flutter.git
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a6af422874
* some space formattings * always use blocks in if-else if a block is used * format spaces in for and while * allow multiline if conditions * fix missing space
551 lines
18 KiB
Dart
551 lines
18 KiB
Dart
// Copyright 2017 The Chromium 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_test/flutter_test.dart';
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import 'package:flutter/widgets.dart';
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import 'package:flutter/gestures.dart' show DragStartBehavior;
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import 'package:flutter/material.dart';
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import 'states.dart';
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void main() {
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testWidgets('ListView control test', (WidgetTester tester) async {
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final List<String> log = <String>[];
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: ListView(
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dragStartBehavior: DragStartBehavior.down,
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children: kStates.map<Widget>((String state) {
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return GestureDetector(
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onTap: () {
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log.add(state);
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},
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child: Container(
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height: 200.0,
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color: const Color(0xFF0000FF),
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child: Text(state),
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),
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dragStartBehavior: DragStartBehavior.down,
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);
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}).toList(),
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),
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),
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);
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await tester.tap(find.text('Alabama'));
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expect(log, equals(<String>['Alabama']));
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log.clear();
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expect(find.text('Nevada'), findsNothing);
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await tester.drag(find.text('Alabama'), const Offset(0.0, -4000.0));
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await tester.pump();
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expect(find.text('Alabama'), findsNothing);
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expect(tester.getCenter(find.text('Massachusetts')), equals(const Offset(400.0, 100.0)));
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await tester.tap(find.text('Massachusetts'));
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expect(log, equals(<String>['Massachusetts']));
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log.clear();
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});
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testWidgets('ListView restart ballistic activity out of range', (WidgetTester tester) async {
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Widget buildListView(int n) {
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return Directionality(
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textDirection: TextDirection.ltr,
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child: ListView(
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dragStartBehavior: DragStartBehavior.down,
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children: kStates.take(n).map<Widget>((String state) {
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return Container(
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height: 200.0,
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color: const Color(0xFF0000FF),
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child: Text(state),
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);
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}).toList(),
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),
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);
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}
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await tester.pumpWidget(buildListView(30));
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await tester.fling(find.byType(ListView), const Offset(0.0, -4000.0), 4000.0);
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await tester.pumpWidget(buildListView(15));
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await tester.pump(const Duration(milliseconds: 10));
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await tester.pump(const Duration(milliseconds: 10));
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await tester.pump(const Duration(milliseconds: 10));
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await tester.pump(const Duration(milliseconds: 10));
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await tester.pumpAndSettle(const Duration(milliseconds: 100));
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final Viewport viewport = tester.widget(find.byType(Viewport));
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expect(viewport.offset.pixels, equals(2400.0));
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});
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testWidgets('CustomScrollView control test', (WidgetTester tester) async {
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final List<String> log = <String>[];
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: CustomScrollView(
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dragStartBehavior: DragStartBehavior.down,
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slivers: <Widget>[
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SliverList(
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delegate: SliverChildListDelegate(
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kStates.map<Widget>((String state) {
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return GestureDetector(
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dragStartBehavior: DragStartBehavior.down,
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onTap: () {
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log.add(state);
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},
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child: Container(
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height: 200.0,
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color: const Color(0xFF0000FF),
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child: Text(state),
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),
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);
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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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),
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);
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await tester.tap(find.text('Alabama'));
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expect(log, equals(<String>['Alabama']));
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log.clear();
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expect(find.text('Nevada'), findsNothing);
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await tester.drag(find.text('Alabama'), const Offset(0.0, -4000.0));
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await tester.pump();
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expect(find.text('Alabama'), findsNothing);
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expect(tester.getCenter(find.text('Massachusetts')), equals(const Offset(400.0, 100.0)));
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await tester.tap(find.text('Massachusetts'));
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expect(log, equals(<String>['Massachusetts']));
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log.clear();
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});
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testWidgets('Can jumpTo during drag', (WidgetTester tester) async {
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final List<Type> log = <Type>[];
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final ScrollController controller = ScrollController();
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: NotificationListener<ScrollNotification>(
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onNotification: (ScrollNotification notification) {
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log.add(notification.runtimeType);
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return false;
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},
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child: ListView(
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controller: controller,
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children: kStates.map<Widget>((String state) {
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return Container(
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height: 200.0,
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child: Text(state),
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);
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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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expect(log, isEmpty);
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final TestGesture gesture = await tester.startGesture(const Offset(100.0, 100.0));
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await gesture.moveBy(const Offset(0.0, -100.0));
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expect(log, equals(<Type>[
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ScrollStartNotification,
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UserScrollNotification,
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ScrollUpdateNotification,
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]));
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log.clear();
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await tester.pump();
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controller.jumpTo(550.0);
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expect(controller.offset, equals(550.0));
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expect(log, equals(<Type>[
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ScrollEndNotification,
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UserScrollNotification,
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ScrollStartNotification,
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ScrollUpdateNotification,
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ScrollEndNotification,
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]));
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log.clear();
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await tester.pump();
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await gesture.moveBy(const Offset(0.0, -100.0));
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expect(controller.offset, equals(550.0));
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expect(log, isEmpty);
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});
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testWidgets('Vertical CustomScrollViews are primary by default', (WidgetTester tester) async {
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const CustomScrollView view = CustomScrollView(scrollDirection: Axis.vertical);
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expect(view.primary, isTrue);
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});
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testWidgets('Vertical ListViews are primary by default', (WidgetTester tester) async {
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final ListView view = ListView(scrollDirection: Axis.vertical);
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expect(view.primary, isTrue);
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});
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testWidgets('Vertical GridViews are primary by default', (WidgetTester tester) async {
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final GridView view = GridView.count(
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scrollDirection: Axis.vertical,
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crossAxisCount: 1,
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);
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expect(view.primary, isTrue);
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});
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testWidgets('Horizontal CustomScrollViews are non-primary by default', (WidgetTester tester) async {
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const CustomScrollView view = CustomScrollView(scrollDirection: Axis.horizontal);
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expect(view.primary, isFalse);
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});
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testWidgets('Horizontal ListViews are non-primary by default', (WidgetTester tester) async {
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final ListView view = ListView(scrollDirection: Axis.horizontal);
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expect(view.primary, isFalse);
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});
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testWidgets('Horizontal GridViews are non-primary by default', (WidgetTester tester) async {
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final GridView view = GridView.count(
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scrollDirection: Axis.horizontal,
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crossAxisCount: 1,
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);
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expect(view.primary, isFalse);
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});
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testWidgets('CustomScrollViews with controllers are non-primary by default', (WidgetTester tester) async {
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final CustomScrollView view = CustomScrollView(
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controller: ScrollController(),
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scrollDirection: Axis.vertical,
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);
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expect(view.primary, isFalse);
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});
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testWidgets('ListViews with controllers are non-primary by default', (WidgetTester tester) async {
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final ListView view = ListView(
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controller: ScrollController(),
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scrollDirection: Axis.vertical,
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);
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expect(view.primary, isFalse);
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});
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testWidgets('GridViews with controllers are non-primary by default', (WidgetTester tester) async {
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final GridView view = GridView.count(
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controller: ScrollController(),
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scrollDirection: Axis.vertical,
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crossAxisCount: 1,
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);
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expect(view.primary, isFalse);
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});
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testWidgets('CustomScrollView sets PrimaryScrollController when primary', (WidgetTester tester) async {
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final ScrollController primaryScrollController = ScrollController();
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: PrimaryScrollController(
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controller: primaryScrollController,
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child: const CustomScrollView(primary: true),
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),
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),
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);
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final Scrollable scrollable = tester.widget(find.byType(Scrollable));
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expect(scrollable.controller, primaryScrollController);
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});
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testWidgets('ListView sets PrimaryScrollController when primary', (WidgetTester tester) async {
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final ScrollController primaryScrollController = ScrollController();
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: PrimaryScrollController(
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controller: primaryScrollController,
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child: ListView(primary: true),
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),
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),
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);
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final Scrollable scrollable = tester.widget(find.byType(Scrollable));
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expect(scrollable.controller, primaryScrollController);
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});
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testWidgets('GridView sets PrimaryScrollController when primary', (WidgetTester tester) async {
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final ScrollController primaryScrollController = ScrollController();
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: PrimaryScrollController(
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controller: primaryScrollController,
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child: GridView.count(primary: true, crossAxisCount: 1),
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),
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),
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);
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final Scrollable scrollable = tester.widget(find.byType(Scrollable));
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expect(scrollable.controller, primaryScrollController);
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});
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testWidgets('Nested scrollables have a null PrimaryScrollController', (WidgetTester tester) async {
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const Key innerKey = Key('inner');
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final ScrollController primaryScrollController = ScrollController();
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: PrimaryScrollController(
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controller: primaryScrollController,
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child: ListView(
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primary: true,
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children: <Widget>[
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Container(
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constraints: const BoxConstraints(maxHeight: 200.0),
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child: ListView(key: innerKey, primary: true),
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),
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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 Scrollable innerScrollable = tester.widget(
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find.descendant(
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of: find.byKey(innerKey),
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matching: find.byType(Scrollable),
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),
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);
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expect(innerScrollable.controller, isNull);
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});
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testWidgets('Primary ListViews are always scrollable', (WidgetTester tester) async {
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final ListView view = ListView(primary: true);
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expect(view.physics, isInstanceOf<AlwaysScrollableScrollPhysics>());
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});
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testWidgets('Non-primary ListViews are not always scrollable', (WidgetTester tester) async {
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final ListView view = ListView(primary: false);
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expect(view.physics, isNot(isInstanceOf<AlwaysScrollableScrollPhysics>()));
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});
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testWidgets('Defaulting-to-primary ListViews are always scrollable', (WidgetTester tester) async {
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final ListView view = ListView(scrollDirection: Axis.vertical);
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expect(view.physics, isInstanceOf<AlwaysScrollableScrollPhysics>());
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});
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testWidgets('Defaulting-to-not-primary ListViews are not always scrollable', (WidgetTester tester) async {
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final ListView view = ListView(scrollDirection: Axis.horizontal);
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expect(view.physics, isNot(isInstanceOf<AlwaysScrollableScrollPhysics>()));
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});
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testWidgets('primary:true leads to scrolling', (WidgetTester tester) async {
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bool scrolled = false;
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: NotificationListener<OverscrollNotification>(
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onNotification: (OverscrollNotification message) { scrolled = true; return false; },
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child: ListView(
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primary: true,
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children: const <Widget>[],
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),
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),
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),
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);
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await tester.dragFrom(const Offset(100.0, 100.0), const Offset(0.0, 100.0));
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expect(scrolled, isTrue);
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});
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testWidgets('primary:false leads to no scrolling', (WidgetTester tester) async {
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bool scrolled = false;
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: NotificationListener<OverscrollNotification>(
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onNotification: (OverscrollNotification message) { scrolled = true; return false; },
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child: ListView(
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primary: false,
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children: const <Widget>[],
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),
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),
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),
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);
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await tester.dragFrom(const Offset(100.0, 100.0), const Offset(0.0, 100.0));
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expect(scrolled, isFalse);
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});
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testWidgets('physics:AlwaysScrollableScrollPhysics actually overrides primary:false default behavior', (WidgetTester tester) async {
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bool scrolled = false;
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: NotificationListener<OverscrollNotification>(
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onNotification: (OverscrollNotification message) { scrolled = true; return false; },
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child: ListView(
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primary: false,
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physics: const AlwaysScrollableScrollPhysics(),
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children: const <Widget>[],
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),
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),
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),
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);
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await tester.dragFrom(const Offset(100.0, 100.0), const Offset(0.0, 100.0));
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expect(scrolled, isTrue);
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});
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testWidgets('physics:ScrollPhysics actually overrides primary:true default behavior', (WidgetTester tester) async {
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bool scrolled = false;
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await tester.pumpWidget(
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Directionality(
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textDirection: TextDirection.ltr,
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child: NotificationListener<OverscrollNotification>(
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onNotification: (OverscrollNotification message) { scrolled = true; return false; },
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child: ListView(
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primary: true,
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physics: const ScrollPhysics(),
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children: const <Widget>[],
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),
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),
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),
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);
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await tester.dragFrom(const Offset(100.0, 100.0), const Offset(0.0, 100.0));
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expect(scrolled, isFalse);
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});
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testWidgets('separatorBuilder must return something', (WidgetTester tester) async {
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const List<String> listOfValues = <String>['ALPHA', 'BETA', 'GAMMA', 'DELTA'];
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Widget buildFrame(Widget firstSeparator) {
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return MaterialApp(
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home: Material(
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child: ListView.separated(
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itemBuilder: (BuildContext context, int index) {
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return Text(listOfValues[index]);
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},
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separatorBuilder: (BuildContext context, int index) {
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if (index == 0) {
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return firstSeparator;
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} else {
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return const Divider();
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}
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},
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itemCount: listOfValues.length,
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),
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),
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);
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}
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// A separatorBuilder that always returns a Divider is fine
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await tester.pumpWidget(buildFrame(const Divider()));
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expect(tester.takeException(), isNull);
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// A separatorBuilder that returns null throws a FlutterError
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await tester.pumpWidget(buildFrame(null));
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expect(tester.takeException(), isInstanceOf<FlutterError>());
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expect(find.byType(ErrorWidget), findsOneWidget);
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});
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testWidgets('itemBuilder can return null', (WidgetTester tester) async {
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const List<String> listOfValues = <String>['ALPHA', 'BETA', 'GAMMA', 'DELTA'];
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const Key key = Key('list');
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const int RENDER_NULL_AT = 2; // only render the first 2 values
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Widget buildFrame() {
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return MaterialApp(
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home: Material(
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child: ListView.builder(
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key: key,
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itemBuilder: (BuildContext context, int index) {
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if (index == RENDER_NULL_AT) {
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return null;
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}
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return Text(listOfValues[index]);
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},
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itemCount: listOfValues.length,
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),
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),
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);
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}
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// The length of a list is itemCount or the index of the first itemBuilder
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// that returns null, whichever is smaller
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await tester.pumpWidget(buildFrame());
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expect(tester.takeException(), isNull);
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expect(find.byType(ErrorWidget), findsNothing);
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expect(find.byType(Text), findsNWidgets(RENDER_NULL_AT));
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});
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testWidgets('when itemBuilder throws, creates Error Widget', (WidgetTester tester) async {
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const List<String> listOfValues = <String>['ALPHA', 'BETA', 'GAMMA', 'DELTA'];
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Widget buildFrame(bool throwOnFirstItem) {
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return MaterialApp(
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home: Material(
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child: ListView.builder(
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itemBuilder: (BuildContext context, int index) {
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if (index == 0 && throwOnFirstItem) {
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throw Exception('itemBuilder fail');
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}
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return Text(listOfValues[index]);
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},
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itemCount: listOfValues.length,
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),
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),
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);
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}
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// When itemBuilder doesn't throw, no ErrorWidget
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await tester.pumpWidget(buildFrame(false));
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expect(tester.takeException(), isNull);
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final Finder finder = find.byType(ErrorWidget);
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expect(find.byType(ErrorWidget), findsNothing);
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// When it does throw, one error widget is rendered in the item's place
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await tester.pumpWidget(buildFrame(true));
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expect(tester.takeException(), isInstanceOf<Exception>());
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expect(finder, findsOneWidget);
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});
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testWidgets('when separatorBuilder throws, creates ErrorWidget', (WidgetTester tester) async {
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const List<String> listOfValues = <String>['ALPHA', 'BETA', 'GAMMA', 'DELTA'];
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const Key key = Key('list');
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Widget buildFrame(bool throwOnFirstSeparator) {
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return MaterialApp(
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home: Material(
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child: ListView.separated(
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key: key,
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itemBuilder: (BuildContext context, int index) {
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return Text(listOfValues[index]);
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},
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separatorBuilder: (BuildContext context, int index) {
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if (index == 0 && throwOnFirstSeparator) {
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throw Exception('separatorBuilder fail');
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}
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return const Divider();
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|
},
|
|
itemCount: listOfValues.length,
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
// When separatorBuilder doesn't throw, no ErrorWidget
|
|
await tester.pumpWidget(buildFrame(false));
|
|
expect(tester.takeException(), isNull);
|
|
final Finder finder = find.byType(ErrorWidget);
|
|
expect(find.byType(ErrorWidget), findsNothing);
|
|
|
|
// When it does throw, one error widget is rendered in the separator's place
|
|
await tester.pumpWidget(buildFrame(true));
|
|
expect(tester.takeException(), isInstanceOf<Exception>());
|
|
expect(finder, findsOneWidget);
|
|
});
|
|
}
|