Add oving 4

src/test/java/oving4/card/CardHandTest.java

@@ -0,0 +1,75 @@
+package oving4.card;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+public class CardHandTest {
+
+	private CardHand cardHand;
+
+	private static void checkHand(CardHand hand, String deckAsString) {
+		String[] toStrings = deckAsString.split(",");
+		assertEquals(toStrings.length, hand.getCardCount(),
+				"The number of cards in the hand was incorrect");
+
+		int i = 0;
+
+		for (String toString : toStrings) {
+			Card card = hand.getCard(i);
+			String cardString = String.valueOf(card.getSuit()) + card.getFace();
+			assertEquals(toString, cardString, String.format(
+					"The card at position %d was incorrect. The hand should have contained %s",
+					i + 1, toStrings));
+
+			i++;
+		}
+	}
+
+	@BeforeEach
+	public void setUp() {
+		cardHand = new CardHand();
+	}
+
+	@Test
+	@DisplayName("Check that CardHand is initialized to empty")
+	public void testConstructor() {
+		CardDeck deck = new CardDeck(2);
+		deck.deal(cardHand, 3);
+		CardHandTest.checkHand(cardHand, "C2,C1,D2");
+	}
+
+	@Test
+	@DisplayName("Test the addCard method")
+	public void testAddCard() {
+		CardDeck deck = new CardDeck(2);
+		deck.deal(cardHand, 3);
+		CardHandTest.checkHand(cardHand, "C2,C1,D2");
+
+		cardHand.addCard(new Card('H', 1));
+		CardHandTest.checkHand(cardHand, "C2,C1,D2,H1");
+
+		assertThrows(IllegalArgumentException.class, () -> {
+			cardHand.addCard(null);
+		}, "Cannot add null card");
+	}
+
+	@Test
+	@DisplayName("Test the deal and play methods")
+	public void testDealPlay() {
+		CardDeck deck = new CardDeck(2);
+		deck.deal(cardHand, 3);
+		CardHandTest.checkHand(cardHand, "C2,C1,D2");
+
+		cardHand.play(1);
+		CardHandTest.checkHand(cardHand, "C2,D2");
+
+		cardHand.play(0);
+		CardHandTest.checkHand(cardHand, "D2");
+
+		cardHand.play(0);
+		assertEquals(cardHand.getCardCount(), 0);
+	}
+}