Complete

src/main/java/FizzBuzz.java

@@ -1,2 +1,14 @@
 public class FizzBuzz {
+
+    public String fizzBuzz(int num){
+        if(num%3 == 0 && num%5 == 0){
+            return "FizzBuzz";
+        } else if (num%5 == 0){
+            return "Buzz";
+        } else if ((num%3 == 0)){
+            return "Fizz";
+        } else {
+            return Integer.toString(num);
+        }
+    }
 }

src/test/java/FizzBuzzTest.java

@@ -1,2 +1,46 @@
+import org.junit.Assert;
+import org.junit.Test;
+
 public class FizzBuzzTest {
+    FizzBuzz fb = new FizzBuzz();
+
+    @Test
+    public void testFizzBuzz_3(){
+        String actual = fb.fizzBuzz(3);
+        String expected = "Fizz";
+
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testFizzBuzz_5(){
+        String actual = fb.fizzBuzz(5);
+        String expected = "Buzz";
+
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testFizzBuzz_15(){
+        String actual = fb.fizzBuzz(15);
+        String expected = "FizzBuzz";
+
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testFizzBuzz_else1(){
+        String actual = fb.fizzBuzz(2);
+        String expected = "2";
+
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testFizzBuzz_else2(){
+        String actual = fb.fizzBuzz(29);
+        String expected = "29";
+
+        Assert.assertEquals(expected, actual);
+    }
 }