// 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/widgets.dart'; import 'package:flutter_test/flutter_test.dart'; void main() { testWidgets('Align smoke test', (WidgetTester tester) async { await tester.pumpWidget( Align( alignment: const Alignment(0.50, 0.50), child: Container(), ), ); await tester.pumpWidget( Align( child: Container(), ), ); await tester.pumpWidget( const Align( alignment: Alignment.topLeft, ), ); await tester.pumpWidget(const Directionality( textDirection: TextDirection.rtl, child: Align( alignment: AlignmentDirectional.topStart, ), )); await tester.pumpWidget( const Align( alignment: Alignment.topLeft, ), ); }); testWidgets('Align control test (LTR)', (WidgetTester tester) async { await tester.pumpWidget(const Directionality( textDirection: TextDirection.ltr, child: Align( alignment: AlignmentDirectional.topStart, child: SizedBox(width: 100.0, height: 80.0), ), )); expect(tester.getTopLeft(find.byType(SizedBox)).dx, 0.0); expect(tester.getBottomRight(find.byType(SizedBox)).dx, 100.0); await tester.pumpWidget(const Directionality( textDirection: TextDirection.ltr, child: Align( alignment: Alignment.topLeft, child: SizedBox(width: 100.0, height: 80.0), ), )); expect(tester.getTopLeft(find.byType(SizedBox)).dx, 0.0); expect(tester.getBottomRight(find.byType(SizedBox)).dx, 100.0); }); testWidgets('Align control test (RTL)', (WidgetTester tester) async { await tester.pumpWidget(const Directionality( textDirection: TextDirection.rtl, child: Align( alignment: AlignmentDirectional.topStart, child: SizedBox(width: 100.0, height: 80.0), ), )); expect(tester.getTopLeft(find.byType(SizedBox)).dx, 700.0); expect(tester.getBottomRight(find.byType(SizedBox)).dx, 800.0); await tester.pumpWidget(const Directionality( textDirection: TextDirection.ltr, child: Align( alignment: Alignment.topLeft, child: SizedBox(width: 100.0, height: 80.0), ), )); expect(tester.getTopLeft(find.byType(SizedBox)).dx, 0.0); expect(tester.getBottomRight(find.byType(SizedBox)).dx, 100.0); }); testWidgets('Shrink wraps in finite space', (WidgetTester tester) async { final GlobalKey alignKey = GlobalKey(); await tester.pumpWidget( SingleChildScrollView( child: Align( key: alignKey, child: const SizedBox( width: 10.0, height: 10.0, ), ), ), ); final Size size = alignKey.currentContext!.size!; expect(size.width, equals(800.0)); expect(size.height, equals(10.0)); }); testWidgets('Align widthFactor', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: Row( crossAxisAlignment: CrossAxisAlignment.start, mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ Align( widthFactor: 0.5, child: SizedBox( height: 100.0, width: 100.0, ), ), ], ), ), ); final RenderBox box = tester.renderObject<RenderBox>(find.byType(Align)); expect(box.size.width, equals(50.0)); }); testWidgets('Align heightFactor', (WidgetTester tester) async { await tester.pumpWidget( const Directionality( textDirection: TextDirection.ltr, child: Column( mainAxisAlignment: MainAxisAlignment.center, crossAxisAlignment: CrossAxisAlignment.start, children: <Widget>[ Align( heightFactor: 0.5, child: SizedBox( height: 100.0, width: 100.0, ), ), ], ), ), ); final RenderBox box = tester.renderObject<RenderBox>(find.byType(Align)); expect(box.size.height, equals(50.0)); }); }