public void AddExpenseToGroup(Expense expense, int groupId)
{
Group group = GetGroup(groupId);
int expenseCount = group.ExpenseCount;
expense.Id = expenseCount + 1;
group.AddExpense(expense);
}
public void Execute()
{
IRepository repo = new InMemoryRepository();
Validate(repo);
Expense expense = new Expense(description, amount, owner);
repo.AddExpenseToGroup(expense, groupId);
}
public void AddExpense(Expense expense)
{
expenses.Add(expense);
}