public void ShouldValidateWhenCommandIsValid()
{
var command = new CreateCustomerCommand();
command.FirstName = "Jhones";
command.LastName = "Goncalves";
command.Document = "01449951074";
command.Email = "*****@*****.**";
command.Phone = "1199999999";
Assert.AreEqual(true, command.isValid());
}