box_sliver_mismatch_test.dart 1.54 KB
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// Copyright 2017 The Chromium 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';
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import 'package:flutter/rendering.dart';
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import 'package:flutter/widgets.dart';

void main() {
  testWidgets('Sliver in a box', (WidgetTester tester) async {
    await tester.pumpWidget(
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      const DecoratedBox(
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        decoration: BoxDecoration(),
        child: SliverList(
          delegate: SliverChildListDelegate(<Widget>[]),
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        ),
      ),
    );

    expect(tester.takeException(), isFlutterError);

    await tester.pumpWidget(
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      Row(
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        children: const <Widget>[
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          SliverList(
            delegate: SliverChildListDelegate(<Widget>[]),
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          ),
        ],
      ),
    );

    expect(tester.takeException(), isFlutterError);
  });

  testWidgets('Box in a sliver', (WidgetTester tester) async {
    await tester.pumpWidget(
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      Viewport(
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        crossAxisDirection: AxisDirection.right,
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        offset: ViewportOffset.zero(),
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        slivers: const <Widget>[
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          SizedBox(),
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        ],
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      ),
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    );

    expect(tester.takeException(), isFlutterError);

    await tester.pumpWidget(
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      Viewport(
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        crossAxisDirection: AxisDirection.right,
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        offset: ViewportOffset.zero(),
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        slivers: const <Widget>[
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          SliverPadding(
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            padding: EdgeInsets.zero,
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            sliver: SizedBox(),
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          ),
        ],
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      ),
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    );

    expect(tester.takeException(), isFlutterError);
  });
}