cpd/test/unit_testing/progressvalue_test.dart

import 'package:cpd/pages/homepage.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:cpd/database/habit.dart';

void main() {
  group('MyHomePageState', () {
    test('progressValue is calculated correctly', () {
      // Arrange
      final myHomePageState = MyHomePageState();
      List<Habit> habits = [
        Habit(id: 1,
            title: 'Habit 1',
            subtitle: 'Description 1',
            iconCodePoint: Icons.star.codePoint,
            iconFontFamily: Icons.star.fontFamily ?? 'MaterialIcons',
            isComplete: false),
        Habit(id: 2,
            title: 'Habit 2',
            subtitle: 'Description 2',
            iconCodePoint: Icons.star_border.codePoint,
            iconFontFamily: Icons.star_border.fontFamily ?? 'MaterialIcons',
            isComplete: true),
        Habit(id: 3,
            title: 'Habit 3',
            subtitle: 'Description 3',
            iconCodePoint: Icons.favorite.codePoint,
            iconFontFamily: Icons.favorite.fontFamily ?? 'MaterialIcons',
            isComplete: true),
      ];

      // Act
      final habitCount = myHomePageState.countHabits(habits);
      final completedCount = habits.where((habit) => habit.isComplete).length;
      final progressValue = completedCount / habitCount;

      // Assert
      expect(habitCount, 3);
      expect(completedCount, 2);
      expect(progressValue, 2 / 3);
    });
  });
}