Implemented tests for double or nothing.

src/main/java/uk/co/neviyn/pokergame/model/DONResult.java

@@ -21,4 +21,9 @@ public class DONResult {
     public boolean isWin() {
         return win;
     }
+
+    @Override
+    public String toString() {
+        return String.format("card: %s, win: %b", card.getShortName(), win);
+    }
 }

src/test/java/uk/co/neviyn/pokergame/game/DoubleOrNothingTest.java

@@ -0,0 +1,38 @@
+package uk.co.neviyn.pokergame.game;
+
+import org.junit.Before;
+import org.junit.Test;
+import uk.co.neviyn.pokergame.model.Card;
+import uk.co.neviyn.pokergame.model.DONResult;
+
+import static org.junit.Assert.*;
+
+public class DoubleOrNothingTest {
+
+    DoubleOrNothing doubleOrNothing;
+
+    @Before
+    public void setUp(){
+        doubleOrNothing = new DoubleOrNothing();
+    }
+
+    @Test
+    public void testPlayTryToWin() throws Exception {
+        while(doubleOrNothing.isPlayable()) {
+            assertTrue(doubleOrNothing.play(doubleOrNothing.getCurrentCard().compareTo(doubleOrNothing.cheat()) <= 0).isWin());
+        }
+    }
+
+    @Test
+    public void testPlayTryToLose() throws Exception {
+        Card card = doubleOrNothing.getCurrentCard();
+        while(doubleOrNothing.isPlayable()) {
+            DONResult result = doubleOrNothing.play(doubleOrNothing.getCurrentCard().compareTo(doubleOrNothing.cheat()) > 0);
+            if(card.getValue() == result.getCard().getValue()) // If it's a draw we technically win.
+                assertTrue(result.isWin());
+            else
+                assertFalse(result.isWin());
+            card = result.getCard();
+        }
+    }
+}

src/test/java/uk/co/neviyn/pokergame/game/HandTest.java

@@ -1,12 +1,10 @@
-package game;
+package uk.co.neviyn.pokergame.game;
 
 import org.junit.Assert;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
 import org.mockito.junit.MockitoJUnitRunner;
-import uk.co.neviyn.pokergame.game.Hand;
-import uk.co.neviyn.pokergame.game.IDeck;
 import uk.co.neviyn.pokergame.model.Card;
 import uk.co.neviyn.pokergame.model.Result;
 import uk.co.neviyn.pokergame.model.Suit;