public void service_on_clear_undo_entities_are_restored()
{
var source = new Person[]
{
new Person(null, false),
new Person(null, false),
new Person(null, false),
new Person(null, false),
new Person(null, false)
};
ChangeTrackingService svc = new ChangeTrackingService();
PersonCollection list = new PersonCollection(svc);
list.BeginInit();
list.AddRange(source);
list.EndInit();
list.Clear();
svc.Undo();
Assert.AreEqual <int>(source.Length, list.Count());
source.ForEach(p =>
{
int expected = Array.IndexOf(source, p);
int actual = list.IndexOf(p);
Assert.AreEqual <int>(expected, actual);
});
}