public void BulkUpdate__IndividualOperationsDoNotTriggerVersionChanged__EndingBulkUpdateTriggersVersionChanged()
{
var c = new CollectionEx<int>();
var eventCalled = false;
var lastVersion = c.Version;
c.VersionChanged += (s, e) =>
{
eventCalled = true;
};
using (var bulkUpdate = c.BeginBulkUpdate())
{
c.Add(13);
c.AddRange(new int[] { 1, 2, 3, 4, 5 });
c.Move(1, 0);
c.Remove(1);
c.RemoveAt(0);
c.RemoveRange(0, 2);
c.Replace(5, 6);
c.Reset(new int[] { 11, 12, 13 });
c[0] = 5;
Assert.IsFalse(eventCalled);
Assert.AreEqual(lastVersion, c.Version);
}
// event and version should be updated now as bulkUpdate finished
Assert.IsTrue(eventCalled);
Assert.AreNotEqual(lastVersion, c.Version);
}
public void CanRemoveRange()
{
var c = new CollectionEx<int>();
c.AddRange(new int[] { 1, 2 });
c.RemoveRange(0, 2);
Assert.AreEqual(0, c.Count);
}
public void CanAddRange()
{
var c = new CollectionEx<int>();
c.AddRange(new int[] { 1, 2 });
Assert.IsTrue(c[0] == 1);
Assert.IsTrue(c[1] == 2);
Assert.AreEqual(2, c.Count);
}
public void AddRange__TriggersVersionChangedEvent()
{
var c = new CollectionEx<int>();
c.Add(13);
var eventCalled = false;
var lastVersion = c.Version;
c.VersionChanged += (s, e) =>
{
if (eventCalled)
Assert.Fail("VersionChanged should be triggered only once during bulk updates");
eventCalled = true;
};
c.AddRange(new int[] { 1, 2, 3 });
Assert.IsTrue(eventCalled);
Assert.AreNotEqual(lastVersion, c.Version);
Assert.AreEqual(4, c.Count);
}
