public void KeyedItemListAssignKeepsReferences()
{
var three = new MyKeyedInt("a", 3);
var four = new MyKeyedInt("b", 4);
var newFive = new MyKeyedInt("c", 5);
KeyedItemList <MyKeyedInt> kil = new KeyedItemList <MyKeyedInt> {
three, four
};
KeyedItemList <MyKeyedInt> kil2 = new KeyedItemList <MyKeyedInt> {
new MyKeyedInt("a", 3), four, newFive
};
kil.Assign(kil2);
Assert.Same(three, kil["a"]);
Assert.Same(four, kil["b"]);
Assert.Same(newFive, kil["c"]);
}
public void KeyedItemListEventsAreCalled()
{
MyKeyedInt three = new MyKeyedInt("a", 3);
MyKeyedInt four = new MyKeyedInt("b", 4);
MyKeyedInt five = new MyKeyedInt("c", 5);
MyKeyedInt ftwo = new MyKeyedInt("b", 42);
KeyedItemList <MyKeyedInt> kil = new KeyedItemList <MyKeyedInt> {
three, four
};
KeyedItemList <MyKeyedInt> kil2 = new KeyedItemList <MyKeyedInt> {
ftwo, five
};
bool threeDeleted = false;
bool othersDeleted = false;
void deleteHandler(object sender, KeyedItemList <MyKeyedInt> .ItemDeletedArgs args)
{
Assert.Same(kil, sender);
Assert.False(threeDeleted);
Assert.False(othersDeleted);
if (args.Key == "a" && object.ReferenceEquals(args.OldItem, three))
{
threeDeleted = true;
}
else
{
othersDeleted = true;
}
}
kil.ItemDeleted += deleteHandler;
bool fiveAdded = false;
bool othersAdded = false;
void addHandler(object sender, KeyedItemList <MyKeyedInt> .ItemAddedArgs args)
{
Assert.Same(kil, sender);
Assert.False(fiveAdded);
Assert.False(othersAdded);
if (args.Key == "c" && object.ReferenceEquals(args.NewItem, five))
{
fiveAdded = true;
}
else
{
othersAdded = true;
}
}
kil.ItemAdded += addHandler;
bool fourUpdated = false;
bool othersUpdated = false;
void updateHandler(object sender, KeyedItemList <MyKeyedInt> .ItemUpdatedArgs args)
{
Assert.Same(kil, sender);
Assert.False(fourUpdated);
Assert.False(othersUpdated);
if (args.Key == "b" && object.ReferenceEquals(args.Item, four))
{
fourUpdated = true;
}
else
{
othersUpdated = true;
}
}
kil.ItemUpdated += updateHandler;
bool fourObjectUpdated = false;
void fourUpdateHandler(object sender, MyKeyedInt.UpdatedArgs args)
{
Assert.False(fourObjectUpdated);
fourObjectUpdated = true;
}
kil["b"].Updated += fourUpdateHandler;
kil.Assign(kil2);
Assert.True(threeDeleted);
Assert.False(othersDeleted);
Assert.True(fiveAdded);
Assert.False(othersAdded);
Assert.True(fourUpdated);
Assert.False(othersUpdated);
Assert.True(fourObjectUpdated);
Assert.Equal(four, kil["b"]);
Assert.Equal(new MyKeyedInt(42), four);
Assert.Equal(five, kil["c"]);
}
