Styjun

I'm working on incorporating some unit tests into an old C# poker game that I'm trying to refactor (for practice). I ran into some trouble when trying to test a non-static method and I couldn't find any solutions.

The class diagram for the related classes looks like this.

This is the code for the non-static method:

 /// <summary>
 /// Loops through the collection stored in cardArray[] and sets each of the card objects' inplay property to false.
 /// </summary>
 public void ResetUsage()
 
 for (int i = 0; i < cardArray.Length; i++)
 
 // Loops through the cardArray and sets inplay property to false.
 cardArray[i].Inplay = false;
 
 

The array is of type SuperCard and is defined in the CardSet class's constructor. This is how its called in the Main():

private static void RunPokerSession()
 {
 // Create our deck object
 CardSet myDeck = new CardSet();

 while (PokerSession.Balance != 0)
 { 
 myDeck.ResetUsage();

 // Retrieves the computer and player hands.
 SuperCard[] computerHand = myDeck.GetCards(PokerSession.HandSize);
 SuperCard[] playerHand = myDeck.GetCards(PokerSession.HandSize);

The unit test that I'm trying to code is checking to see whether the InPlay property was indeed set to false for every card in the deck.

My question is whether its possible to code this test using NUnit?

Yes, it is possible.

If you can instantiate the CardSet class in a junit test you can test that ResetUsage() does what you expect. If you can observe what RunPokerSession does to a CardSet will depend on the design and structure of RunPokerSession, and that is not clear from you question. You will, most likely, want to inject a CarSet to the RunPokerSession and then observe the result. Can you do that with the current implementation?

With Lasse's and Jocke's help, I was able to think through the implementation. This is how I implemented the unit test for my non-static method:

 [Test]
 public void ResetUsage_ValidateInPlayReset_ReturnsTrue()
 
 CardSet testdeck = new CardSet();

 testdeck.ResetUsage();

 bool result = false;

 for (int i = 0; i < testdeck.cardArray.Length; i++)
 
 if (testdeck.cardArray[i].Inplay == false)
 
 result = true;
 
 

 Assert.That(result = true);