public void BBlocked_UserWithValidMembers_WhenCreateValidated_ReturnsTrue()
        {
            //Arrange: A blocked user with all valid members is created.
            BBlocked_User blocked_user = new BBlocked_User {
                username="******",
                Author_Name="blocked"
            };

            //Act: the blocked user is checked if it is create valid.
            bool valid = blocked_user.CreateValid();

            //Assert: the blocked user is valid for creation.
            Assert.AreEqual(true, valid);
        }
        public void BBlocked_UserWithInvalidMembers_WhenCreateValidated_ReturnsFalse()
        {
            //Arrange: A blocked user with all invalid members is created.
            BBlocked_User blocked_user = new BBlocked_User{
                username = null,
                Author_Name = "123456789012345678789012345678901234567890"
            };

            //Act: the blocked user is checked if it is create valid.
            bool valid = blocked_user.CreateValid();

            //Assert: the blocked user is not valid for creation.
            Assert.AreEqual(false, valid);
        }