semantic_announcement_tester sample tests

main.dart

testWidgets('One announcement', (WidgetTester tester) async {
    final mock = MockSemanticAnnouncements(tester);
    const expectedAnnouncement = AnnounceSemanticsEvent(
      "Announcement made",
      TextDirection.ltr,
    );
    await tester.pumpWidget(const MyApp());
    // Tap to trigger an announcement
    await tester.tap(find.byType(ElevatedButton));
    expect(
      mock.announcements,
      hasOneAnnouncement(expectedAnnouncement),
    );
  });

testWidgets('N announcements', (WidgetTester tester) async {
    final mock = MockSemanticAnnouncements(tester);
    const expectedAnnouncement = AnnounceSemanticsEvent(
      "Announcement made",
      TextDirection.ltr,
    );
    await tester.pumpWidget(const MyApp());
    // Tap twice to trigger two announcements
    await tester.tap(find.byType(ElevatedButton));
    await tester.tap(find.byType(ElevatedButton));
    expect(
      mock.announcements,
      hasNAnnouncements([
        expectedAnnouncement, expectedAnnouncement
      ]),
    );
  });
 
testWidgets("Zero announcements", (WidgetTester tester) async {
  final mock = MockSemanticAnnouncements(tester);
  await tester.pumpWidget(const MyApp());
  expect(mock.announcements, hasZeroAnnouncements());
});