public void Ensure_that_a_ContactMessageData_by_default_is_not_valid()
        {
            // Arrange
            var data = new ContactMessageData();
            var validator = new PresentationValidator();

            // Act
            var valid = validator.IsValid(data);

            // Assert
            Assert.That(valid, Is.False);
        }
        public void Ensure_that_a_ContactMessageData_with_good_data_is_valid()
        {
            // Arrange
            var validator = new PresentationValidator();
            var data = new ContactMessageData
                           {
                               Email = "*****@*****.**",
                               Message = "I like your web site.",
                               Name = "Hamburger Magic",
                               Subject = "Hello"
                           };

            // Act
            var valid = validator.IsValid(data);

            // Assert
            Assert.That(valid, Is.True);
        }