public async void TestUpdate()
{
ConnectionFactory connectionFactory = new ConnectionFactory(Environment.Testing);
ISkierDao skierDao = new SkierDao(connectionFactory);
Skier skier = await InsertSkier(connectionFactory);
skier.FirstName = "Andrea";
skier.Gender = Gender.Female;
await skierDao.Update(skier);
Skier skierAfter = await skierDao.FindById(skier.Id);
Assert.Equal(skier.FirstName, skierAfter.FirstName);
Assert.Equal(skier.Gender, skierAfter.Gender);
}