Updated tests

src/main/java/FizzBuzz.java

@@ -1,9 +1,23 @@
 public class FizzBuzz {
     public static String of(int number) {
-       // if () {
 
-        return null;
+        String result = "";
+        // Fizz Buzz game
+        // if % 3 == 0, then fizz
+        // if % 5 == 0, then Buzz
+        // if % 5 == 0 && %3 == 0, then FizzBuzz
+        // else number to string
+        if (number % 3 == 0 && number % 5 == 0) {
+            result = "FizzBuzz";
+        } else if (number % 3 == 0) {
+            result = "Fizz";
+        } else if (number % 5 == 0) {
+            result = "Buzz";
+        } else {
+            result = Integer.toString(number);
+        }
+
+        return result;
 
         }
     }
-}