packages/flutter/test/widgets/overflow_box_test.dart

// Copyright 2015 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/rendering.dart';
import 'package:flutter/widgets.dart';

void main() {
  testWidgets('OverflowBox control test', (WidgetTester tester) async {
    final GlobalKey inner = new GlobalKey();
    await tester.pumpWidget(new Align(
      alignment: const Alignment(1.0, 1.0),
      child: new SizedBox(
        width: 10.0,
        height: 20.0,
        child: new OverflowBox(
          minWidth: 0.0,
          maxWidth: 100.0,
          minHeight: 0.0,
          maxHeight: 50.0,
          child: new Container(
            key: inner
          )
        )
      )
    ));
    final RenderBox box = inner.currentContext.findRenderObject();
    expect(box.localToGlobal(Offset.zero), equals(const Offset(745.0, 565.0)));
    expect(box.size, equals(const Size(100.0, 50.0)));
  });

  testWidgets('OverflowBox implements debugFillProperties', (WidgetTester tester) async {
    final DiagnosticPropertiesBuilder builder = new DiagnosticPropertiesBuilder();
    const OverflowBox(
      minWidth: 1.0,
      maxWidth: 2.0,
      minHeight: 3.0,
      maxHeight: 4.0
    ).debugFillProperties(builder);
    final List<String> description = builder.properties
        .where((DiagnosticsNode n) => !n.isFiltered(DiagnosticLevel.info))
        .map((DiagnosticsNode n) => n.toString()).toList();
    expect(description, <String>[
      'alignment: center',
      'minWidth: 1.0',
      'maxWidth: 2.0',
      'minHeight: 3.0',
      'maxHeight: 4.0',
    ]);
  });
}