73 lines
2.3 KiB
Dart
73 lines
2.3 KiB
Dart
// Copyright 2016 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/material.dart';
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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testWidgets('ExpansionPanelList test', (WidgetTester tester) async {
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int index;
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bool isExpanded;
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await tester.pumpWidget(
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new ScrollableViewport(
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child: new ExpansionPanelList(
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expansionCallback: (int _index, bool _isExpanded) {
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index = _index;
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isExpanded = _isExpanded;
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},
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children: <ExpansionPanel>[
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new ExpansionPanel(
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headerBuilder: (BuildContext context, bool isExpanded) {
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return new Text(isExpanded ? 'B' : 'A');
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},
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body: new SizedBox(height: 100.0)
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)
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]
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)
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)
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);
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expect(find.text('A'), findsOneWidget);
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expect(find.text('B'), findsNothing);
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RenderBox box = tester.renderObject(find.byType(ExpansionPanelList));
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double oldHeight = box.size.height;
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expect(find.byType(ExpandIcon), findsOneWidget);
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await tester.tap(find.byType(ExpandIcon));
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expect(index, 0);
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expect(isExpanded, isFalse);
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box = tester.renderObject(find.byType(ExpansionPanelList));
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expect(box.size.height, equals(oldHeight));
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// now expand the child panel
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await tester.pumpWidget(
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new ScrollableViewport(
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child: new ExpansionPanelList(
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expansionCallback: (int _index, bool _isExpanded) {
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index = _index;
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isExpanded = _isExpanded;
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},
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children: <ExpansionPanel>[
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new ExpansionPanel(
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headerBuilder: (BuildContext context, bool isExpanded) {
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return new Text(isExpanded ? 'B' : 'A');
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},
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body: new SizedBox(height: 100.0),
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isExpanded: true // this is the addition
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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(const Duration(milliseconds: 200));
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expect(find.text('A'), findsNothing);
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expect(find.text('B'), findsOneWidget);
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box = tester.renderObject(find.byType(ExpansionPanelList));
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expect(box.size.height - oldHeight, greaterThanOrEqualTo(100.0)); // 100 + some margin
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});
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}
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