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Member "flutter-3.7.1/packages/flutter/test/widgets/align_test.dart" (1 Feb 2023, 4354 Bytes) of package /linux/misc/flutter-3.7.1.tar.gz:

    1 // Copyright 2014 The Flutter Authors. All rights reserved.
    2 // Use of this source code is governed by a BSD-style license that can be
    3 // found in the LICENSE file.
    4 
    5 import 'package:flutter/widgets.dart';
    6 import 'package:flutter_test/flutter_test.dart';
    7 
    8 void main() {
    9   testWidgets('Align smoke test', (WidgetTester tester) async {
   10     await tester.pumpWidget(
   11       Align(
   12         alignment: const Alignment(0.50, 0.50),
   13         child: Container(),
   14       ),
   15     );
   16 
   17     await tester.pumpWidget(
   18       Align(
   19         child: Container(),
   20       ),
   21     );
   22 
   23     await tester.pumpWidget(
   24       const Align(
   25         alignment: Alignment.topLeft,
   26       ),
   27     );
   28     await tester.pumpWidget(const Directionality(
   29       textDirection: TextDirection.rtl,
   30       child: Align(
   31         alignment: AlignmentDirectional.topStart,
   32       ),
   33     ));
   34     await tester.pumpWidget(
   35       const Align(
   36         alignment: Alignment.topLeft,
   37       ),
   38     );
   39   });
   40 
   41   testWidgets('Align control test (LTR)', (WidgetTester tester) async {
   42     await tester.pumpWidget(const Directionality(
   43       textDirection: TextDirection.ltr,
   44       child: Align(
   45         alignment: AlignmentDirectional.topStart,
   46         child: SizedBox(width: 100.0, height: 80.0),
   47       ),
   48     ));
   49 
   50     expect(tester.getTopLeft(find.byType(SizedBox)).dx, 0.0);
   51     expect(tester.getBottomRight(find.byType(SizedBox)).dx, 100.0);
   52 
   53     await tester.pumpWidget(const Directionality(
   54       textDirection: TextDirection.ltr,
   55       child: Align(
   56         alignment: Alignment.topLeft,
   57         child: SizedBox(width: 100.0, height: 80.0),
   58       ),
   59     ));
   60 
   61     expect(tester.getTopLeft(find.byType(SizedBox)).dx, 0.0);
   62     expect(tester.getBottomRight(find.byType(SizedBox)).dx, 100.0);
   63   });
   64 
   65   testWidgets('Align control test (RTL)', (WidgetTester tester) async {
   66     await tester.pumpWidget(const Directionality(
   67       textDirection: TextDirection.rtl,
   68       child: Align(
   69         alignment: AlignmentDirectional.topStart,
   70         child: SizedBox(width: 100.0, height: 80.0),
   71       ),
   72     ));
   73 
   74     expect(tester.getTopLeft(find.byType(SizedBox)).dx, 700.0);
   75     expect(tester.getBottomRight(find.byType(SizedBox)).dx, 800.0);
   76 
   77     await tester.pumpWidget(const Directionality(
   78       textDirection: TextDirection.ltr,
   79       child: Align(
   80         alignment: Alignment.topLeft,
   81         child: SizedBox(width: 100.0, height: 80.0),
   82       ),
   83     ));
   84 
   85     expect(tester.getTopLeft(find.byType(SizedBox)).dx, 0.0);
   86     expect(tester.getBottomRight(find.byType(SizedBox)).dx, 100.0);
   87   });
   88 
   89   testWidgets('Shrink wraps in finite space', (WidgetTester tester) async {
   90     final GlobalKey alignKey = GlobalKey();
   91     await tester.pumpWidget(
   92       SingleChildScrollView(
   93         child: Align(
   94           key: alignKey,
   95           child: const SizedBox(
   96             width: 10.0,
   97             height: 10.0,
   98           ),
   99         ),
  100       ),
  101     );
  102 
  103     final Size size = alignKey.currentContext!.size!;
  104     expect(size.width, equals(800.0));
  105     expect(size.height, equals(10.0));
  106   });
  107 
  108   testWidgets('Align widthFactor', (WidgetTester tester) async {
  109     await tester.pumpWidget(
  110       Directionality(
  111         textDirection: TextDirection.ltr,
  112         child: Row(
  113           crossAxisAlignment: CrossAxisAlignment.start,
  114           mainAxisAlignment: MainAxisAlignment.center,
  115           children: const <Widget>[
  116             Align(
  117               widthFactor: 0.5,
  118               child: SizedBox(
  119                 height: 100.0,
  120                 width: 100.0,
  121               ),
  122             ),
  123           ],
  124         ),
  125       ),
  126     );
  127     final RenderBox box = tester.renderObject<RenderBox>(find.byType(Align));
  128     expect(box.size.width, equals(50.0));
  129   });
  130 
  131   testWidgets('Align heightFactor', (WidgetTester tester) async {
  132     await tester.pumpWidget(
  133       Directionality(
  134         textDirection: TextDirection.ltr,
  135         child: Column(
  136           mainAxisAlignment: MainAxisAlignment.center,
  137           crossAxisAlignment: CrossAxisAlignment.start,
  138           children: const <Widget>[
  139             Align(
  140               heightFactor: 0.5,
  141               child: SizedBox(
  142                 height: 100.0,
  143                 width: 100.0,
  144               ),
  145             ),
  146           ],
  147         ),
  148       ),
  149     );
  150     final RenderBox box = tester.renderObject<RenderBox>(find.byType(Align));
  151     expect(box.size.height, equals(50.0));
  152   });
  153 }