Add testcase for player declaring colo with Wild

src/Test/PlayerTest.java

@@ -21,6 +21,7 @@ class PlayerTest {
 
     @Test
     /**
+     * Test 1
      * Test when a card is played, it goes to the discard pile
      * Run 100 times to cancel randomness
      */
@@ -46,6 +47,7 @@ class PlayerTest {
 
 
     /**
+     * Test 2
      * Test the situation where player choose to draw a card
      * Run 100 times to cancel randomness
      */
@@ -82,4 +84,34 @@ class PlayerTest {
         game.gameStart();
         assert(game.rounds == 7);
     }
+
+
+
+    /**
+     * Test 4
+     * Test when a player plays a wild card and declare the matchable color as "red",
+     * the game state (controlled by ruleController) is properly updated.
+     * Notice the declaration is hard-coded in stage assignment-1.0
+     */
+    @Test
+    void testPlayerDeclareColorWithWild() {
+        Game game = null;
+        Player player = null;
+        int wildCardID = -1;
+        boolean hasWild = false;
+        while (!hasWild) {
+            game = new Game(1);
+            player = game.players.get(0);
+            for (int cardID : player.getCards()) {
+                if (cardID >= 101 && cardID <= 104) {
+                    wildCardID = cardID;
+                    hasWild = true;
+                    break;  // the player has a wild card
+                }
+            }
+        }
+        player.optionPlayOwnedCard(wildCardID);
+        assert(game.ruler.getMatchableColor().equals("red"));
+    }
+
 }
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