public void DelayedPropertyChangeNotifications()
{
dynamic i = new TestItems.Item();
IPropertyOwner ipo = (IPropertyOwner)i;
List <string> log = CreateItemPropertyNotificationLog(i);
i.Name = "Good name"; // ⚡Name Changing, Changed
log.Add("after Name");
i.Cost = 1; // ⚡Cost and CostIsDefaulted Changing, Changed
log.Add("after Cost");
CollectionAssert.AreEqual(new[] {
"-Name: ", "+Name: Good name", "after Name",
"-Cost: 43", "-CostIsDefaulted: True", "+Cost: 1", "+CostIsDefaulted: False", "after Cost"
}, log);
log.Clear();
using (ipo.DelayedPropertyChangeNotification()) {
i.Name = "No name"; // ⚡Name Changing
log.Add("after Name");
i.Cost = 2; // ⚡Cost Changing
log.Add("after Cost");
i.Name = "Another name"; // no ⚡
CollectionAssert.AreEqual(new[] { "-Name: Good name", "after Name", "-Cost: 1", "after Cost" }, log);
log.Clear();
} // ⚡Name and Cost Changed
CollectionAssert.AreEqual(new[] { "+Name: Another name", "+Cost: 2" }, log);
Assert.AreEqual(default(decimal), i.Price);
i.Price = 144M;
Assert.AreEqual(144M, i.Price);
log.Clear();
i["Price"] = null;
Assert.AreEqual(0M, i.Price);
i.Price = 89;
CollectionAssert.AreEqual(new[] { "-Price: 144", "+Price: 0", "-Price: 0", "+Price: 89" }, log);
}