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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';
import 'package:flutter/widgets.dart';
void main() {
testWidgets('SliverFillRemaining - no siblings', (WidgetTester tester) async {
final ScrollController controller = new ScrollController();
await tester.pumpWidget(
new Directionality(
textDirection: TextDirection.ltr,
child: new CustomScrollView(
controller: controller,
slivers: <Widget>[
new SliverFillRemaining(child: new Container()),
],
),
),
);
expect(tester.renderObject<RenderBox>(find.byType(Container)).size.height, equals(600.0));
controller.jumpTo(50.0);
await tester.pump();
expect(tester.renderObject<RenderBox>(find.byType(Container)).size.height, equals(600.0));
controller.jumpTo(-100.0);
await tester.pump();
expect(tester.renderObject<RenderBox>(find.byType(Container)).size.height, equals(600.0));
controller.jumpTo(0.0);
await tester.pump();
expect(tester.renderObject<RenderBox>(find.byType(Container)).size.height, equals(600.0));
});
testWidgets('SliverFillRemaining - one sibling', (WidgetTester tester) async {
final ScrollController controller = new ScrollController();
await tester.pumpWidget(
new Directionality(
textDirection: TextDirection.ltr,
child: new CustomScrollView(
controller: controller,
slivers: <Widget>[
const SliverToBoxAdapter(child: const SizedBox(height: 100.0)),
new SliverFillRemaining(child: new Container()),
],
),
),
);
expect(tester.renderObject<RenderBox>(find.byType(Container)).size.height, equals(500.0));
controller.jumpTo(50.0);
await tester.pump();
expect(tester.renderObject<RenderBox>(find.byType(Container)).size.height, equals(550.0));
controller.jumpTo(-100.0);
await tester.pump();
expect(tester.renderObject<RenderBox>(find.byType(Container)).size.height, equals(400.0)); // (!)
controller.jumpTo(0.0);
await tester.pump();
expect(tester.renderObject<RenderBox>(find.byType(Container)).size.height, equals(500.0));
});
}