public void Should_NotBeAbleToTravel_IfBalanceIsUnderMinimumRequired()
{
var oysterCard = new OysterCard();
Assert.Throws <Exception>(() => oysterCard.Deduct(5));
}
public void Should_HaveZeroBalance_OnInstantiation()
{
var oysterCard = new OysterCard();
Assert.That(oysterCard.Balance, Is.EqualTo(0));
}
public void Should_NotBeAbleTo_PutMoreMoneyOnTheCardThanMaximumBalance()
{
var oysterCard = new OysterCard();
Assert.Throws <Exception>(() => oysterCard.TopUp(1000));
}