public void TestGrouping()
{
ObservableCollection <Item> items = new ObservableCollection <Item>(
new Item[]
{
new Item(0, "0"),
new Item(1, "0"),
new Item(2, "2"),
new Item(3, "3"),
new Item(4, "3"),
new Item(5, "3")
});
OcConsumer consumer = new OcConsumer();
Grouping <Item, string> grouping =
items.Grouping(i => i.Value).For(consumer);
Action <Group <Item, string>, int, Item> groupingInsertItemIntoGroupRequestHandler = (group, index, item) =>
items.Insert(index < @group.Count ? @group.SourceItemIndices[index] : @group.SourceItemIndices[@group.Count - 1] + 1, item);
grouping.InsertItemIntoGroupRequestHandler = groupingInsertItemIntoGroupRequestHandler;
Assert.IsTrue(grouping.InsertItemIntoGroupRequestHandler == groupingInsertItemIntoGroupRequestHandler);
Action <Group <Item, string>, int> groupingRemoveItemFromGroupRequestHandler = (group, index) =>
items.RemoveAt(@group.SourceItemIndices[index]);
grouping.RemoveItemFromGroupRequestHandler = groupingRemoveItemFromGroupRequestHandler;
Assert.IsTrue(grouping.RemoveItemFromGroupRequestHandler == groupingRemoveItemFromGroupRequestHandler);
Action <Group <Item, string>, int, int> groupingMoveItemInGroupRequestHandler = (group, oldIndex, newIndex) =>
{
Item item = @group[oldIndex];
items.RemoveAt(@group.SourceItemIndices[oldIndex]);
items.Insert(@group.SourceItemIndices[newIndex], item);
};
grouping.MoveItemInGroupRequestHandler = groupingMoveItemInGroupRequestHandler;
Assert.IsTrue(grouping.MoveItemInGroupRequestHandler == groupingMoveItemInGroupRequestHandler);
Action <Group <Item, string>, int, Item> groupingSetGroupItemRequestHandler = (group, index, item) =>
items[@group.SourceItemIndices[index]] = item;
grouping.SetGroupItemRequestHandler = groupingSetGroupItemRequestHandler;
Assert.IsTrue(grouping.SetGroupItemRequestHandler == groupingSetGroupItemRequestHandler);
Action <Group <Item, string> > groupingClearGroupItemsRequestHandler = group =>
{
ReadOnlyCollection <int> groupSourceItemIndecies = @group.SourceItemIndices;
for (int i = @group.Count - 1; i >= 0; i--)
{
items.RemoveAt(groupSourceItemIndecies[i]);
}
};
grouping.ClearGroupItemsRequestHandler = groupingClearGroupItemsRequestHandler;
Assert.IsTrue(grouping.ClearGroupItemsRequestHandler == groupingClearGroupItemsRequestHandler);
Assert.AreEqual(grouping[2].Grouping, grouping);
Assert.AreEqual(grouping[2].Parent, grouping);
Assert.AreEqual(grouping.GetGroup("3"), grouping[2]);
grouping[2].Add(new Item(6, "3"));
grouping.ValidateInternalConsistency();
Assert.IsTrue(grouping[2].Remove(grouping[2][1]));
grouping.ValidateInternalConsistency();
Assert.IsFalse(grouping[2].Remove(new Item(0, "0")));
grouping.ValidateInternalConsistency();
grouping[2][0] = new Item(7, "3");
grouping.ValidateInternalConsistency();
grouping[2].Move(0, 1);
grouping.ValidateInternalConsistency();
grouping[2].Clear();
grouping.ValidateInternalConsistency();
consumer.Dispose();
}
