Made 12 test for FizzBuzz.

src/main/java/FizzBuzz.java

@@ -1,2 +1,5 @@
 public class FizzBuzz {
+    public static String of(int number1) {
+        return "";
+    }
 }

src/test/java/FizzBuzzTest.java

@@ -1,2 +1,136 @@
+import org.junit.Assert;
+import org.junit.Test;
+
 public class FizzBuzzTest {
-}
+    @Test
+    public void ifThreeAndFiveTest(){
+        // Given
+        int number1 = 15;
+        String expectedNumber = "FizzBuzz";
+        //When
+        String actualNumber = FizzBuzz.of(number1);
+        //then
+        Assert.assertEquals(expectedNumber, actualNumber);
+    }
+
+    @Test
+    public void ifThreeAndFiveTest2(){
+        // Given
+        int number1 = 300000000;
+        String expectedNumber = "FizzBuzz";
+        //When
+        String actualNumber = FizzBuzz.of(number1);
+        //then
+        Assert.assertEquals(expectedNumber, actualNumber);
+    }
+
+    @Test
+    public void ifThreeAndFiveTest3(){
+        // Given
+        int number1 = -3000;
+        String expectedNumber = "FizzBuzz";
+        //When
+        String actualNumber = FizzBuzz.of(number1);
+        //then
+        Assert.assertEquals(expectedNumber, actualNumber);
+    }
+
+    @Test
+    public void ifThreeTest(){
+        // Given
+        int number1 = 99;
+        String expectedNumber = "Fizz";
+        //When
+        String actualNumber = FizzBuzz.of(number1);
+        //then
+        Assert.assertEquals(expectedNumber, actualNumber);
+    }
+
+    @Test
+    public void ifThreeTest2(){
+        // Given
+        int number1 = 6;
+        String expectedNumber = "Fizz";
+        //When
+        String actualNumber = FizzBuzz.of(number1);
+        //then
+        Assert.assertEquals(expectedNumber, actualNumber);
+    }
+
+    @Test
+    public void ifThreeTest3(){
+        // Given
+        int number1 = -24;
+        String expectedNumber = "Fizz";
+        //When
+        String actualNumber = FizzBuzz.of(number1);
+        //then
+        Assert.assertEquals(expectedNumber, actualNumber);
+    }
+
+    @Test
+    public void ifFiveTest(){
+        // Given
+        int number1 = 25;
+        String expectedNumber = "Buzz";
+        //When
+        String actualNumber = FizzBuzz.of(number1);
+        //then
+        Assert.assertEquals(expectedNumber, actualNumber);
+    }
+
+    @Test
+    public void ifFiveTest2(){
+        // Given
+        int number1 = 5000;
+        String expectedNumber = "Buzz";
+        //When
+        String actualNumber = FizzBuzz.of(number1);
+        //then
+        Assert.assertEquals(expectedNumber, actualNumber);
+    }
+
+    @Test
+    public void ifFiveTest3(){
+        // Given
+        int number1 = -95;
+        String expectedNumber = "Buzz";
+        //When
+        String actualNumber = FizzBuzz.of(number1);
+        //then
+        Assert.assertEquals(expectedNumber, actualNumber);
+    }
+
+    @Test
+    public void ifNoneTest(){
+        // Given
+        int number1 = 0;
+        String expectedNumber = "0";
+        //When
+        String actualNumber = FizzBuzz.of(number1);
+        //then
+        Assert.assertEquals(expectedNumber, actualNumber);
+    }
+
+    @Test
+    public void ifNoneTest2(){
+        // Given
+        int number1 = -47;
+        String expectedNumber = "-47";
+        //When
+        String actualNumber = FizzBuzz.of(number1);
+        //then
+        Assert.assertEquals(expectedNumber, actualNumber);
+    }
+
+    @Test
+    public void ifNoneTest3(){
+        // Given
+        int number1 = 574;
+        String expectedNumber = "574";
+        //When
+        String actualNumber = FizzBuzz.of(number1);
+        //then
+        Assert.assertEquals(expectedNumber, actualNumber);
+    }
+}