Added unit tests for the card object.

test/card_test.c

@@ -2,8 +2,74 @@
 #include <stdbool.h>
 #include "../lib/card.h"
 
-void test_card() {
-  assert(true);
+void test_initialize_card() {
+  struct card *card;
+
+  allocate_card(&card);
+  initialize_card(card);
+
+  assert(card->value == NO_VALUE);
+  assert(card->suit == NO_SUIT);
+  assert(card->face == NO_FACE);
+
+  delete_card(card);
+
+  return;
+}
+
+void test_set_card() {
+  struct card *card;
+  int start_y = 5;
+  int start_x = 10;
+
+  allocate_card(&card);
+  initialize_card(card);
+  set_card(card, ACE, SPADES, EXPOSED, start_y, start_x);
+
+  assert(card->value == ACE);
+  assert(card->suit == SPADES);
+  assert(card->face == EXPOSED);
+  assert(card->frame->start_y == start_y);
+  assert(card->frame->start_x == start_x);
+
+  delete_card(card);
+
+  return;
+}
+
+void test_expose_card() {
+  struct card *card;
+
+  allocate_card(&card);
+  initialize_card(card);
+  expose_card(card);
+
+  assert(card->face == EXPOSED);
+
+  delete_card(card);
+
+  return;
+}
+
+void test_cover_card() {
+  struct card *card;
+
+  allocate_card(&card);
+  initialize_card(card);
+  cover_card(card);
+
+  assert(card->face == COVERED);
+
+  delete_card(card);
+
+  return;
+}
+
+void test_card() {
+  test_initialize_card();
+  test_set_card();
+  test_expose_card();
+  test_cover_card();
 
   return;
 }