public void Update()
{
// Arrange
FakeDbContext db = new FakeDbContext();
db.AddSet(TestData.Contacts);
// Act
var contact2 = db.Find <Contact>(2);
contact2.Title = "Brain Surgeon";
db.Update <Contact>(contact2);
var updatedContact = db.Find <Contact>(2);
// Assert
Assert.AreEqual("Brain Surgeon", updatedContact.Title,
"Updated contact title check failed");
Assert.AreEqual(1, db.Updated.Count,
"Updated contact count check failed");
}