examples/api/test/widgets/shortcuts/character_activator.0_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/services.dart';
import 'package:flutter_api_samples/widgets/shortcuts/character_activator.0.dart'
    as example;
import 'package:flutter_test/flutter_test.dart';

void main() {
  group('CharacterActivatorExampleApp', () {
    testWidgets('displays correct labels', (WidgetTester tester) async {
      await tester.pumpWidget(
        const example.CharacterActivatorExampleApp(),
      );

      expect(find.text('CharacterActivator Sample'), findsOneWidget);
      expect(find.text('Press question mark for help'), findsOneWidget);
    });

    testWidgets(
      'shows snack bar on question key pressed',
      (WidgetTester tester) async {
        await tester.pumpWidget(
          const example.CharacterActivatorExampleApp(),
        );

        final Finder snackBarFinder = find.ancestor(
          of: find.text('Keep calm and carry on!'),
          matching: find.byType(SnackBar),
        );

        expect(snackBarFinder, findsNothing);

        await tester.sendKeyEvent(LogicalKeyboardKey.slash, character: '?');

        // Advance the SnackBar entrance animation to the end.
        await tester.pumpAndSettle();

        expect(snackBarFinder, findsOneWidget);

        // Advance time by default SnackBar display duration.
        await tester.pump(const Duration(milliseconds: 4000));

        // Advance the SnackBar exit animation to the end.
        await tester.pumpAndSettle();

        expect(snackBarFinder, findsNothing);
      },
    );
  });
}