public void CreditCard_WithdrawWithoutAssignedLimit_ShouldBeImposible()
{
var creditCard = new CreditCardBuilder()
.Build();
Action act = () => creditCard.Withdraw(100);
act.Should()
.Throw <InvalidOperationException>()
.WithMessage("Lack of funds");
}
public void CreditCard_WithdrawInLimit_ShouldDecreaseLimit()
{
var creditCard = new CreditCardBuilder()
.WithLimit(100)
.Build();
creditCard.Withdraw(50);
var snapshot = creditCard.GetSnapshot();
snapshot.AvaliableLimit.Should().Be(50);
}