// 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/services.dart';
import 'package:flutter_api_samples/widgets/focus_traversal/ordered_traversal_policy.0.dart'
    as example;
import 'package:flutter_test/flutter_test.dart';

void main() {
  bool hasFocus(WidgetTester tester, String text) {
    return Focus.of(tester.element(find.text(text))).hasPrimaryFocus;
  }

  testWidgets(
    'The focus updates should follow the focus traversal groups policy',
    (WidgetTester tester) async {
      await tester.pumpWidget(const example.OrderedTraversalPolicyExampleApp());

      expect(hasFocus(tester, 'One'), isTrue);

      const List<String> focusOrder = <String>[
        'Two',
        'Three',
        'Four',
        'Five',
        'Six',
        'One',
      ];

      for (final String text in focusOrder) {
        await tester.sendKeyEvent(LogicalKeyboardKey.tab);
        await tester.pump();

        expect(hasFocus(tester, text), isTrue);
      }
    },
  );
}