// Copyright 2014 The Flutter Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. import 'package:flutter_test/flutter_test.dart'; import 'package:flutter/rendering.dart'; import 'package:flutter/widgets.dart'; import '../rendering/mock_canvas.dart'; void verify(WidgetTester tester, List<Offset> answerKey) { final List<Offset> testAnswers = tester.renderObjectList<RenderBox>(find.byType(SizedBox)).map<Offset>( (RenderBox target) => target.localToGlobal(Offset.zero) ).toList(); expect(testAnswers, equals(answerKey)); } void main() { testWidgets('Basic Wrap test (LTR)', (WidgetTester tester) async { await tester.pumpWidget( Wrap( alignment: WrapAlignment.start, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), ], ), ); verify(tester, <Offset>[ const Offset(0.0, 0.0), const Offset(300.0, 0.0), const Offset(0.0, 100.0), const Offset(300.0, 100.0), ]); await tester.pumpWidget( Wrap( alignment: WrapAlignment.center, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), ], ), ); verify(tester, <Offset>[ const Offset(100.0, 0.0), const Offset(400.0, 0.0), const Offset(100.0, 100.0), const Offset(400.0, 100.0), ]); await tester.pumpWidget( Wrap( alignment: WrapAlignment.end, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), ], ), ); verify(tester, <Offset>[ const Offset(200.0, 0.0), const Offset(500.0, 0.0), const Offset(200.0, 100.0), const Offset(500.0, 100.0), ]); await tester.pumpWidget( Wrap( alignment: WrapAlignment.start, crossAxisAlignment: WrapCrossAlignment.start, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 300.0, height: 50.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 50.0), ], ), ); verify(tester, <Offset>[ const Offset(0.0, 0.0), const Offset(300.0, 0.0), const Offset(0.0, 100.0), const Offset(300.0, 100.0), ]); await tester.pumpWidget( Wrap( alignment: WrapAlignment.start, crossAxisAlignment: WrapCrossAlignment.center, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 300.0, height: 50.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 50.0), ], ), ); verify(tester, <Offset>[ const Offset(0.0, 25.0), const Offset(300.0, 0.0), const Offset(0.0, 100.0), const Offset(300.0, 125.0), ]); await tester.pumpWidget( Wrap( alignment: WrapAlignment.start, crossAxisAlignment: WrapCrossAlignment.end, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 300.0, height: 50.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 50.0), ], ), ); verify(tester, <Offset>[ const Offset(0.0, 50.0), const Offset(300.0, 0.0), const Offset(0.0, 100.0), const Offset(300.0, 150.0), ]); }); testWidgets('Basic Wrap test (RTL)', (WidgetTester tester) async { await tester.pumpWidget( Wrap( alignment: WrapAlignment.start, textDirection: TextDirection.rtl, children: const <Widget>[ SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), ], ), ); verify(tester, <Offset>[ const Offset(500.0, 0.0), const Offset(200.0, 0.0), const Offset(500.0, 100.0), const Offset(200.0, 100.0), ]); await tester.pumpWidget( Wrap( alignment: WrapAlignment.center, textDirection: TextDirection.rtl, children: const <Widget>[ SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), ], ), ); verify(tester, <Offset>[ const Offset(400.0, 0.0), const Offset(100.0, 0.0), const Offset(400.0, 100.0), const Offset(100.0, 100.0), ]); await tester.pumpWidget( Wrap( alignment: WrapAlignment.end, textDirection: TextDirection.rtl, children: const <Widget>[ SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), ], ), ); verify(tester, <Offset>[ const Offset(300.0, 0.0), const Offset(0.0, 0.0), const Offset(300.0, 100.0), const Offset(0.0, 100.0), ]); await tester.pumpWidget( Wrap( alignment: WrapAlignment.start, crossAxisAlignment: WrapCrossAlignment.start, textDirection: TextDirection.ltr, verticalDirection: VerticalDirection.up, children: const <Widget>[ SizedBox(width: 300.0, height: 50.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 50.0), ], ), ); verify(tester, <Offset>[ const Offset(0.0, 550.0), const Offset(300.0, 500.0), const Offset(0.0, 400.0), const Offset(300.0, 450.0), ]); await tester.pumpWidget( Wrap( alignment: WrapAlignment.start, crossAxisAlignment: WrapCrossAlignment.center, textDirection: TextDirection.ltr, verticalDirection: VerticalDirection.up, children: const <Widget>[ SizedBox(width: 300.0, height: 50.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 50.0), ], ), ); verify(tester, <Offset>[ const Offset(0.0, 525.0), const Offset(300.0, 500.0), const Offset(0.0, 400.0), const Offset(300.0, 425.0), ]); await tester.pumpWidget( Wrap( alignment: WrapAlignment.start, crossAxisAlignment: WrapCrossAlignment.end, textDirection: TextDirection.ltr, verticalDirection: VerticalDirection.up, children: const <Widget>[ SizedBox(width: 300.0, height: 50.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 100.0), SizedBox(width: 300.0, height: 50.0), ], ), ); verify(tester, <Offset>[ const Offset(0.0, 500.0), const Offset(300.0, 500.0), const Offset(0.0, 400.0), const Offset(300.0, 400.0), ]); }); testWidgets('Empty wrap', (WidgetTester tester) async { await tester.pumpWidget(Center(child: Wrap(alignment: WrapAlignment.center))); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(Size.zero)); }); testWidgets('Wrap alignment (LTR)', (WidgetTester tester) async { await tester.pumpWidget(Wrap( alignment: WrapAlignment.center, spacing: 5.0, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 100.0, height: 10.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 300.0, height: 30.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 600.0))); verify(tester, <Offset>[ const Offset(95.0, 0.0), const Offset(200.0, 0.0), const Offset(405.0, 0.0), ]); await tester.pumpWidget(Wrap( alignment: WrapAlignment.spaceBetween, spacing: 5.0, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 100.0, height: 10.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 300.0, height: 30.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 600.0))); verify(tester, <Offset>[ const Offset(0.0, 0.0), const Offset(200.0, 0.0), const Offset(500.0, 0.0), ]); await tester.pumpWidget(Wrap( alignment: WrapAlignment.spaceAround, spacing: 5.0, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 100.0, height: 10.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 310.0, height: 30.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 600.0))); verify(tester, <Offset>[ const Offset(30.0, 0.0), const Offset(195.0, 0.0), const Offset(460.0, 0.0), ]); await tester.pumpWidget(Wrap( alignment: WrapAlignment.spaceEvenly, spacing: 5.0, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 100.0, height: 10.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 310.0, height: 30.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 600.0))); verify(tester, <Offset>[ const Offset(45.0, 0.0), const Offset(195.0, 0.0), const Offset(445.0, 0.0), ]); }); testWidgets('Wrap alignment (RTL)', (WidgetTester tester) async { await tester.pumpWidget(Wrap( alignment: WrapAlignment.center, spacing: 5.0, textDirection: TextDirection.rtl, children: const <Widget>[ SizedBox(width: 100.0, height: 10.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 300.0, height: 30.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 600.0))); verify(tester, <Offset>[ const Offset(605.0, 0.0), const Offset(400.0, 0.0), const Offset(95.0, 0.0), ]); await tester.pumpWidget(Wrap( alignment: WrapAlignment.spaceBetween, spacing: 5.0, textDirection: TextDirection.rtl, children: const <Widget>[ SizedBox(width: 100.0, height: 10.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 300.0, height: 30.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 600.0))); verify(tester, <Offset>[ const Offset(700.0, 0.0), const Offset(400.0, 0.0), const Offset(0.0, 0.0), ]); await tester.pumpWidget(Wrap( alignment: WrapAlignment.spaceAround, spacing: 5.0, textDirection: TextDirection.rtl, children: const <Widget>[ SizedBox(width: 100.0, height: 10.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 310.0, height: 30.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 600.0))); verify(tester, <Offset>[ const Offset(670.0, 0.0), const Offset(405.0, 0.0), const Offset(30.0, 0.0), ]); await tester.pumpWidget(Wrap( alignment: WrapAlignment.spaceEvenly, spacing: 5.0, textDirection: TextDirection.rtl, children: const <Widget>[ SizedBox(width: 100.0, height: 10.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 310.0, height: 30.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 600.0))); verify(tester, <Offset>[ const Offset(655.0, 0.0), const Offset(405.0, 0.0), const Offset(45.0, 0.0), ]); }); testWidgets('Wrap runAlignment (DOWN)', (WidgetTester tester) async { await tester.pumpWidget(Wrap( runAlignment: WrapAlignment.center, runSpacing: 5.0, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 100.0, height: 10.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 300.0, height: 30.0), SizedBox(width: 400.0, height: 40.0), SizedBox(width: 500.0, height: 60.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 600.0))); verify(tester, <Offset>[ const Offset(0.0, 230.0), const Offset(100.0, 230.0), const Offset(300.0, 230.0), const Offset(0.0, 265.0), const Offset(0.0, 310.0), ]); await tester.pumpWidget(Wrap( runAlignment: WrapAlignment.spaceBetween, runSpacing: 5.0, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 100.0, height: 10.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 300.0, height: 30.0), SizedBox(width: 400.0, height: 40.0), SizedBox(width: 500.0, height: 60.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 600.0))); verify(tester, <Offset>[ const Offset(0.0, 0.0), const Offset(100.0, 0.0), const Offset(300.0, 0.0), const Offset(0.0, 265.0), const Offset(0.0, 540.0), ]); await tester.pumpWidget(Wrap( runAlignment: WrapAlignment.spaceAround, runSpacing: 5.0, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 100.0, height: 10.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 300.0, height: 30.0), SizedBox(width: 400.0, height: 40.0), SizedBox(width: 500.0, height: 70.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 600.0))); verify(tester, <Offset>[ const Offset(0.0, 75.0), const Offset(100.0, 75.0), const Offset(300.0, 75.0), const Offset(0.0, 260.0), const Offset(0.0, 455.0), ]); await tester.pumpWidget(Wrap( runAlignment: WrapAlignment.spaceEvenly, runSpacing: 5.0, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 100.0, height: 10.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 300.0, height: 30.0), SizedBox(width: 400.0, height: 40.0), SizedBox(width: 500.0, height: 60.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 600.0))); verify(tester, <Offset>[ const Offset(0.0, 115.0), const Offset(100.0, 115.0), const Offset(300.0, 115.0), const Offset(0.0, 265.0), const Offset(0.0, 425.0), ]); }); testWidgets('Wrap runAlignment (UP)', (WidgetTester tester) async { await tester.pumpWidget(Wrap( runAlignment: WrapAlignment.center, runSpacing: 5.0, textDirection: TextDirection.ltr, verticalDirection: VerticalDirection.up, children: const <Widget>[ SizedBox(width: 100.0, height: 10.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 300.0, height: 30.0), SizedBox(width: 400.0, height: 40.0), SizedBox(width: 500.0, height: 60.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 600.0))); verify(tester, <Offset>[ const Offset(0.0, 360.0), const Offset(100.0, 350.0), const Offset(300.0, 340.0), const Offset(0.0, 295.0), const Offset(0.0, 230.0), ]); await tester.pumpWidget(Wrap( runAlignment: WrapAlignment.spaceBetween, runSpacing: 5.0, textDirection: TextDirection.ltr, verticalDirection: VerticalDirection.up, children: const <Widget>[ SizedBox(width: 100.0, height: 10.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 300.0, height: 30.0), SizedBox(width: 400.0, height: 40.0), SizedBox(width: 500.0, height: 60.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 600.0))); verify(tester, <Offset>[ const Offset(0.0, 590.0), const Offset(100.0, 580.0), const Offset(300.0, 570.0), const Offset(0.0, 295.0), const Offset(0.0, 0.0), ]); await tester.pumpWidget(Wrap( runAlignment: WrapAlignment.spaceAround, runSpacing: 5.0, textDirection: TextDirection.ltr, verticalDirection: VerticalDirection.up, children: const <Widget>[ SizedBox(width: 100.0, height: 10.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 300.0, height: 30.0), SizedBox(width: 400.0, height: 40.0), SizedBox(width: 500.0, height: 70.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 600.0))); verify(tester, <Offset>[ const Offset(0.0, 515.0), const Offset(100.0, 505.0), const Offset(300.0, 495.0), const Offset(0.0, 300.0), const Offset(0.0, 75.0), ]); await tester.pumpWidget(Wrap( runAlignment: WrapAlignment.spaceEvenly, runSpacing: 5.0, textDirection: TextDirection.ltr, verticalDirection: VerticalDirection.up, children: const <Widget>[ SizedBox(width: 100.0, height: 10.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 300.0, height: 30.0), SizedBox(width: 400.0, height: 40.0), SizedBox(width: 500.0, height: 60.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 600.0))); verify(tester, <Offset>[ const Offset(0.0, 475.0), const Offset(100.0, 465.0), const Offset(300.0, 455.0), const Offset(0.0, 295.0), const Offset(0.0, 115.0), ]); }); testWidgets('Shrink-wrapping Wrap test', (WidgetTester tester) async { await tester.pumpWidget( Align( alignment: Alignment.topLeft, child: Wrap( alignment: WrapAlignment.end, crossAxisAlignment: WrapCrossAlignment.end, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 100.0, height: 10.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 300.0, height: 30.0), SizedBox(width: 400.0, height: 40.0), ], ), ), ); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(600.0, 70.0))); verify(tester, <Offset>[ const Offset(0.0, 20.0), const Offset(100.0, 10.0), const Offset(300.0, 0.0), const Offset(200.0, 30.0), ]); await tester.pumpWidget( Align( alignment: Alignment.topLeft, child: Wrap( alignment: WrapAlignment.end, crossAxisAlignment: WrapCrossAlignment.end, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 400.0, height: 40.0), SizedBox(width: 300.0, height: 30.0), SizedBox(width: 200.0, height: 20.0), SizedBox(width: 100.0, height: 10.0), ], ), ), ); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(700.0, 60.0))); verify(tester, <Offset>[ const Offset(0.0, 0.0), const Offset(400.0, 10.0), const Offset(400.0, 40.0), const Offset(600.0, 50.0), ]); }); testWidgets('Wrap spacing test', (WidgetTester tester) async { await tester.pumpWidget( Align( alignment: Alignment.topLeft, child: Wrap( runSpacing: 10.0, alignment: WrapAlignment.start, crossAxisAlignment: WrapCrossAlignment.start, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 500.0, height: 10.0), SizedBox(width: 500.0, height: 20.0), SizedBox(width: 500.0, height: 30.0), SizedBox(width: 500.0, height: 40.0), ], ), ), ); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(500.0, 130.0))); verify(tester, <Offset>[ const Offset(0.0, 0.0), const Offset(0.0, 20.0), const Offset(0.0, 50.0), const Offset(0.0, 90.0), ]); }); testWidgets('Vertical Wrap test with spacing', (WidgetTester tester) async { await tester.pumpWidget( Align( alignment: Alignment.topLeft, child: Wrap( direction: Axis.vertical, spacing: 10.0, runSpacing: 15.0, alignment: WrapAlignment.start, crossAxisAlignment: WrapCrossAlignment.start, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 10.0, height: 250.0), SizedBox(width: 20.0, height: 250.0), SizedBox(width: 30.0, height: 250.0), SizedBox(width: 40.0, height: 250.0), SizedBox(width: 50.0, height: 250.0), SizedBox(width: 60.0, height: 250.0), ], ), ), ); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(150.0, 510.0))); verify(tester, <Offset>[ const Offset(0.0, 0.0), const Offset(0.0, 260.0), const Offset(35.0, 0.0), const Offset(35.0, 260.0), const Offset(90.0, 0.0), const Offset(90.0, 260.0), ]); await tester.pumpWidget( Align( alignment: Alignment.topLeft, child: Wrap( direction: Axis.horizontal, spacing: 12.0, runSpacing: 8.0, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 10.0, height: 250.0), SizedBox(width: 20.0, height: 250.0), SizedBox(width: 30.0, height: 250.0), SizedBox(width: 40.0, height: 250.0), SizedBox(width: 50.0, height: 250.0), SizedBox(width: 60.0, height: 250.0), ], ), ), ); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(270.0, 250.0))); verify(tester, <Offset>[ const Offset(0.0, 0.0), const Offset(22.0, 0.0), const Offset(54.0, 0.0), const Offset(96.0, 0.0), const Offset(148.0, 0.0), const Offset(210.0, 0.0), ]); }); testWidgets('Visual overflow generates a clip', (WidgetTester tester) async { await tester.pumpWidget(Wrap( textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 500.0, height: 500.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)), isNot(paints..clipRect())); await tester.pumpWidget(Wrap( textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 500.0, height: 500.0), SizedBox(width: 500.0, height: 500.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)), paints..clipRect()); }); testWidgets('Hit test children in wrap', (WidgetTester tester) async { final List<String> log = <String>[]; await tester.pumpWidget(Wrap( spacing: 10.0, runSpacing: 15.0, textDirection: TextDirection.ltr, children: <Widget>[ const SizedBox(width: 200.0, height: 300.0), const SizedBox(width: 200.0, height: 300.0), const SizedBox(width: 200.0, height: 300.0), const SizedBox(width: 200.0, height: 300.0), SizedBox( width: 200.0, height: 300.0, child: GestureDetector( behavior: HitTestBehavior.opaque, onTap: () { log.add('hit'); }, ), ), ], )); await tester.tapAt(const Offset(209.0, 314.0)); expect(log, isEmpty); await tester.tapAt(const Offset(211.0, 314.0)); expect(log, isEmpty); await tester.tapAt(const Offset(209.0, 316.0)); expect(log, isEmpty); await tester.tapAt(const Offset(211.0, 316.0)); expect(log, equals(<String>['hit'])); }); testWidgets('RenderWrap toStringShallow control test', (WidgetTester tester) async { await tester.pumpWidget(Wrap(alignment: WrapAlignment.center)); final RenderBox wrap = tester.renderObject(find.byType(Wrap)); expect(wrap.toStringShallow(), hasOneLineDescription); }); testWidgets('RenderWrap toString control test', (WidgetTester tester) async { await tester.pumpWidget(Wrap( direction: Axis.vertical, runSpacing: 7.0, textDirection: TextDirection.ltr, children: const <Widget>[ SizedBox(width: 500.0, height: 400.0), SizedBox(width: 500.0, height: 400.0), SizedBox(width: 500.0, height: 400.0), SizedBox(width: 500.0, height: 400.0), ], )); final RenderBox wrap = tester.renderObject(find.byType(Wrap)); final double width = wrap.getMinIntrinsicWidth(600.0); expect(width, equals(2021)); }); testWidgets('Wrap baseline control test', (WidgetTester tester) async { await tester.pumpWidget( Center( child: Baseline( baseline: 180.0, baselineType: TextBaseline.alphabetic, child: DefaultTextStyle( style: const TextStyle( fontFamily: 'Ahem', fontSize: 100.0, ), child: Wrap( textDirection: TextDirection.ltr, children: const <Widget>[ Text('X', textDirection: TextDirection.ltr), ], ), ), ), ), ); expect(tester.renderObject<RenderBox>(find.text('X')).size, const Size(100.0, 100.0)); expect(tester.renderObject<RenderBox>(find.byType(Baseline)).size, within<Size>(from: const Size(100.0, 200.0), distance: 0.001)); }); testWidgets('Spacing with slight overflow', (WidgetTester tester) async { await tester.pumpWidget(Wrap( direction: Axis.horizontal, textDirection: TextDirection.ltr, spacing: 10.0, runSpacing: 10.0, children: const <Widget>[ SizedBox(width: 200.0, height: 10.0), SizedBox(width: 200.0, height: 10.0), SizedBox(width: 200.0, height: 10.0), SizedBox(width: 171.0, height: 10.0), ], )); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 600.0))); verify(tester, <Offset>[ const Offset(0.0, 0.0), const Offset(210.0, 0.0), const Offset(420.0, 0.0), const Offset(0.0, 20.0), ]); }); testWidgets('Object exactly matches container width', (WidgetTester tester) async { await tester.pumpWidget( Column( children: <Widget>[ Wrap( direction: Axis.horizontal, textDirection: TextDirection.ltr, spacing: 10.0, runSpacing: 10.0, children: const <Widget>[ SizedBox(width: 800.0, height: 10.0), ], ), ], ), ); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 10.0))); verify(tester, <Offset>[const Offset(0.0, 0.0)]); await tester.pumpWidget( Column( children: <Widget>[ Wrap( direction: Axis.horizontal, textDirection: TextDirection.ltr, spacing: 10.0, runSpacing: 10.0, children: const <Widget>[ SizedBox(width: 800.0, height: 10.0), SizedBox(width: 800.0, height: 10.0), ], ), ], ), ); expect(tester.renderObject<RenderBox>(find.byType(Wrap)).size, equals(const Size(800.0, 30.0))); verify(tester, <Offset>[ const Offset(0.0, 0.0), const Offset(0.0, 20.0), ]); }); }