Added additional tests.

src/poker/card.c

@@ -58,10 +58,9 @@ uint8_t cardCountPairs(card_t *in, uint8_t inCount, uint8_t number,
   int32_t out[CARD_SUIT_COUNT]
 ) {
   uint8_t i, count;
-  int32_t index;
   
   count = 0;
-  for(i = 0; i <= inCount; i++) {// "For each suit"
+  for(i = 0; i < inCount; i++) {// "For each suit"
     if(cardGetNumber(in[i]) != number) continue;
     out[count++] = i;
   }
@@ -77,4 +76,23 @@ uint8_t cardWriteDeck(card_t *hand) {
   uint8_t i;
   for(i = 0; i < CARD_DECK_SIZE; i++) hand[i] = i;
   return CARD_DECK_SIZE;
+}
+
+card_t cardGetHighestCard(card_t *cards, uint8_t cardCount) {
+  uint8_t i, number, bestNumber;
+  card_t card, bestCard;
+
+  bestNumber = 0xFF;
+
+  for(i = 0; i < cardCount; i++) {
+    card = cards[i];
+    number = cardGetNumber(card);
+    if(number == CARD_ACE) return card;
+    if(bestNumber != 0xFF && number <= bestNumber) continue;
+
+    bestCard = card;
+    bestNumber = number;
+  }
+
+  return bestCard;
 }

src/poker/card.h

@@ -202,4 +202,13 @@ void cardShuffle(card_t *hand, uint8_t length);
  * @param hand Hand to write the deck to.
  * @return The count of cards in the deck.
  */
-uint8_t cardWriteDeck(card_t *hand);
+uint8_t cardWriteDeck(card_t *hand);
+
+/**
+ * Get the highest card from a hand of cards.
+ * 
+ * @param cards Array of cards.
+ * @param cardCount Length of the array.
+ * @return The highest card in the array.
+ */
+card_t cardGetHighestCard(card_t *cards, uint8_t cardCount);