packages/flutter/test/widgets/center_test.dart

// 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('Can be placed in an infinite box', (WidgetTester tester) async {
    await tester.pumpWidget(
      Directionality(
        textDirection: TextDirection.ltr,
        child: ListView(children: const <Widget>[Center()]),
      ),
    );
  });

  testWidgets('Center does not crash at zero area', (WidgetTester tester) async {
    tester.view.physicalSize = Size.zero;
    addTearDown(tester.view.reset);
    await tester.pumpWidget(
      const Directionality(
        textDirection: TextDirection.ltr,
        child: Center(child: Placeholder()),
      ),
    );
    expect(tester.getSize(find.byType(Center)), Size.zero);
  });
}