Update UserNotNullUnitTest.java

javaxval/src/test/java/org/baeldung/javabeanconstraints/test/UserNotNullUnitTest.java

@@ -21,27 +21,34 @@ public class UserNotNullUnitTest {
     @Test
     public void whenNotNullName_thenNoConstraintViolations() {
         UserNotNull user = new UserNotNull("John");
+        
         Set<ConstraintViolation<UserNotNull>> violations = validator.validate(user);
+        
         assertThat(violations.size()).isEqualTo(0);
     }
     
     @Test
     public void whenNullName_thenOneConstraintViolation() {
         UserNotNull user = new UserNotNull(null);
+        
         Set<ConstraintViolation<UserNotNull>> violations = validator.validate(user);
+        
         assertThat(violations.size()).isEqualTo(1);
     }
     
     @Test
     public void whenEmptyName_thenNoConstraintViolations() {
         UserNotNull user = new UserNotNull("");
+        
         Set<ConstraintViolation<UserNotNull>> violations = validator.validate(user);
+        
         assertThat(violations.size()).isEqualTo(0);
     }
     
     @Test
     public void whenToString_thenCorrect() {
         UserNotNull user = new UserNotNull("John");
+        
         assertThat(user.toString()).isEqualTo("User{name=John}");
     }
 }