added more test for math util

BonusTest.java

@@ -15,6 +15,48 @@ public class BonusTest
     }
     
     @Test
+    public void testFactorialBase(){
+        //Given
+        int number = 1;
+        int expected = 1;
+        
+        //When
+        int actual = bonus.factorial(number);
+        
+        //Then
+        assertEquals(expected, actual);
+        
+    }
+        
+    @Test
+    public void testFactorialOfSmallNumber(){
+        //Given
+        int number = 3;
+        int expected = 6;
+        
+        //When
+        int actual = bonus.factorial(number);
+        
+        //Then
+        assertEquals(expected, actual);
+        
+    }
+    
+    @Test
+    public void testFactorialOfBigNumber(){
+        //Given
+        int number = 6;
+        int expected = 720;
+        
+        //When
+        int actual = bonus.factorial(number);
+        
+        //Then
+        assertEquals(expected, actual);
+        
+    }
+    
+    @Test
     public void testAcronymBasic() {
         //Given
         String phrase = "Portable Network Graphics";
@@ -96,45 +138,5 @@ public class BonusTest
     }
     
     
-    @Test
-    public void testFactorialOf1(){
-        //Given
-        int number = 1;
-        int expected = 1;
-        
-        //When
-        int actual = bonus.factorial(number);
-        
-        //Then
-        assertEquals(expected, actual);
-        
-    }
-        
-    @Test
-    public void testFactorialOfSmallNumber(){
-        //Given
-        int number = 3;
-        int expected = 6;
-        
-        //When
-        int actual = bonus.factorial(number);
-        
-        //Then
-        assertEquals(expected, actual);
-        
-    }
-    
-    @Test
-    public void testFactorialOfBigNumber(){
-        //Given
-        int number = 6;
-        int expected = 720;
-        
-        //When
-        int actual = bonus.factorial(number);
-        
-        //Then
-        assertEquals(expected, actual);
-        
-    }
+
 }

MathUtilities.java

@@ -11,5 +11,9 @@ public class MathUtilities{
     public double half(int number) {
         return -1;
     }
+    
+    public boolean isOdd(int number){
+        return false;
+    }
 
 }

MathUtilitiesTest.java

@@ -62,4 +62,14 @@ public class MathUtilitiesTest
         //Then
         assertEquals(expected, actual, DELTA);
     }
+    
+    @Test
+    public void testIsOdd_forOddNumber(){
+        assertTrue(utilities.isOdd(7));
+    }
+    
+    @Test
+    public void testIsOdd_forEvenNumber(){
+        assertFalse(utilities.isOdd(12));
+    }
 }