public void GetExpenseShouldReturnZeroExpenseAfterConstruction()
{
var list = new ExpenseList();
var result = list.GetExpense(Id);
Assert.AreEqual(new Money(), result.Value);
}
public void GetExpenseShouldReturnExpenseAfterItWasAddedWithAddExpenseUsingSameId()
{
var list = new ExpenseList();
var expenseValue = new Money(10m);
list.AddExpense(new Expense(Id, expenseValue));
var result = list.GetExpense(Id);
Assert.AreEqual(expenseValue, result.Value);
}
public void AddExpenseShouldIncreaseExpenseAfterItWasAlreadyAdded()
{
var list = new ExpenseList();
var expenseValue = new Money(10m);
list.AddExpense(new Expense(Id, expenseValue));
list.AddExpense(new Expense(Id, expenseValue));
var updatedExpense = list.GetExpense(Id);
Assert.AreEqual(new Money(20m), updatedExpense.Value);
}