public void ShouldThrowOnDrawCardIfDeckIsNull()
{
var cds = new CardDrawingService();
var ex = Assert.Throws <ArgumentNullException>(() => cds.DrawCard(null));
Assert.That(ex.ParamName, Is.EqualTo("deck"));
}
public void ShouldThrowOnDrawCardFromDeckIfNoCardsLeft()
{
var cds = new CardDrawingService();
var deck = new List <Card>(0);
var ex = Assert.Throws <InvalidOperationException>(() => cds.DrawCard(deck));
Assert.That(ex.Message, Contains.Substring("Cannot draw card."));
}
public void ShouldDrawCardFromDeckIfCardsLeft()
{
var cds = new CardDrawingService();
var deck = cds.DrawDeck();
const int cardsInFullDeck = 52;
for (var index = 0; index < cardsInFullDeck; index++)
{
var card = cds.DrawCard(deck);
var cardsLeft = cardsInFullDeck - (index + 1);
Assert.That(deck.Count, Is.EqualTo(cardsLeft));
}
}
