@Test
 public void word() {
   assertTrue(Palindrome.isPalindrome("mom"));
 }
 @Test
 public void shouldReturnTrue() {
   assertTrue(Palindrome.isNrPalindrome(101));
 }
 @Test
 public void upperAndLowerCase() {
   assertTrue(Palindrome.isPalindrome("Noel sees Leon"));
 }
 @Test
 public void notOnlyWordChars() {
   assertTrue(Palindrome.isPalindrome("Noel sees Leon."));
 }
 @Test
 public void sentence() {
   assertTrue(Palindrome.isPalindrome("noel sees leon"));
 }