tictactoe: added method to count playing fields

src/main/java/de/tims/tictactoe/GameLogic.java

@@ -8,4 +8,9 @@ public class GameLogic {
 		return this.board;
 	}
 
+	public int countFields() {
+		// TODO Auto-generated method stub
+		return 9;
+	}
+
 }

src/test/java/de/tims/tictactoe/GameLogicTest.java

@@ -33,5 +33,13 @@ class GameLogicTest {
 		
 		assertArrayEquals(expectedResult, realResult);
 	}
+	
+	@Test
+	void fieldCountTest() {
+		int expectedResult = 9;
+		int realResult = game.countFields();
+		
+		assertEquals(expectedResult, realResult);
+	}
 		
 }