examples/api/test/widgets/sliver_fill/sliver_fill_remaining.3_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/material.dart';
import 'package:flutter_api_samples/widgets/sliver_fill/sliver_fill_remaining.3.dart' as example;
import 'package:flutter_test/flutter_test.dart';

void main() {
  testWidgets('Shows all elements', (WidgetTester tester) async {
    await tester.pumpWidget(const example.SliverFillRemainingExampleApp());
    expect(find.text('SliverFillRemaining Sample'), findsOneWidget);
    expect(find.byType(ElevatedButton), findsOneWidget);
    expect(find.text('Bottom Pinned Button!'), findsOneWidget);
    expect(find.byType(CustomScrollView), findsOneWidget);
    final CustomScrollView scroll = tester.widget(find.byType(CustomScrollView));
    expect(scroll.physics, isA<BouncingScrollPhysics>().
    having((BouncingScrollPhysics bsp) => bsp.parent, 'parent', isA<AlwaysScrollableScrollPhysics>()));

    expect(find.byWidgetPredicate((Widget widget) => (widget is Container)
      && widget.color == Colors.tealAccent[700],
    ), findsOneWidget);
    expect(find.byWidgetPredicate((Widget widget) => (widget is Container)
      && widget.color == Colors.teal[100]
    ), findsOneWidget);
    expect(find.byType(Container), findsNWidgets(2));

    expect(find.byType(SliverFillRemaining), findsOneWidget);
    final SliverFillRemaining fill = tester.widget(find.byType(SliverFillRemaining));
    expect(fill.hasScrollBody, false);
    expect(fill.fillOverscroll, true);
  });
}