public void ObservableCollectionEx_TestInsertRange()
{
ObservableCollectionEx <int> collection = new ObservableCollectionEx <int>();
List <int> list = new List <int>();
for (var i = 200001; i <= 300000; i++)
{
list.Add(i);
}
collection.AddRange(list);
Assert.AreEqual(100000, collection.Count);
Assert.AreEqual(300000, collection[collection.Count - 1]);
list = new List <int>();
for (var i = 1; i <= 100000; i++)
{
list.Add(i);
}
collection.InsertRange(list);
Assert.AreEqual(200000, collection.Count);
Assert.AreEqual(1, collection[0]);
Assert.AreEqual(100000, collection[99999]);
Assert.AreEqual(300000, collection[collection.Count - 1]);
list = new List <int>();
for (var i = 100001; i <= 200000; i++)
{
list.Add(i);
}
collection.InsertRange(100000, list);
Assert.AreEqual(300000, collection.Count);
Assert.AreEqual(1, collection[0]);
Assert.AreEqual(100000, collection[99999]);
Assert.AreEqual(100001, collection[100000]);
Assert.AreEqual(200000, collection[199999]);
Assert.AreEqual(200001, collection[200000]);
Assert.AreEqual(300000, collection[collection.Count - 1]);
}
