cpd/test/integration_testing/addhabit_popup_submitform_test.dart

import 'package:cpd/widgets/addhabit_popup.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';

void main() {
  testWidgets('AddHabitPopup form submission', (WidgetTester tester) async {

    String submittedTitle = '';
    String submittedSubtitle = '';
    IconData submittedIcon = Icons.favorite;

    // erstellt eine echte onSubmit-Funktion,um die Daten zu erfassen
    void handleSubmit(String title, String subtitle, IconData icon) {
      submittedTitle = title;
      submittedSubtitle = subtitle;
      submittedIcon = icon;
    }

    await tester.pumpWidget(MaterialApp(
      home: Scaffold(
        body: AddHabitPopup(
          onSubmit: handleSubmit,
        ),
      ),
    ));

    await tester.enterText(find.byType(TextFormField).at(0), 'New Habit Title');
    await tester.enterText(
        find.byType(TextFormField).at(1), 'New Habit Description');

    await tester.tap(find.text('Save'));

    await tester.pumpAndSettle();

    expect(submittedTitle, 'New Habit Title');
    expect(submittedSubtitle, 'New Habit Description');
    expect(submittedIcon, Icons.favorite);
  });
}