public void ObserveRemoveSection()
{
List <T> list;
AList alist = this.NewList(200, out list);
var tob = new AListTestObserver <int, T>();
var idx = new AListIndexer <int, T>();
alist.AddObserver(tob);
alist.AddObserver(idx);
for (int iteration = 0; alist.Count > 10; iteration++)
{
int start = this._r.Next(alist.Count - 5);
int amount = this._r.Next(Math.Min(alist.Count - start, 40));
bool remove = this._r.Next(3) != 0;
AList sec;
if (remove)
{
sec = this.RemoveSection(alist, start, amount);
list.RemoveRange(start, amount);
}
else
{
sec = this.CopySection(alist, start, amount);
}
ExpectList(alist, list, true);
tob.CheckPoint();
idx.VerifyCorrectness();
Assert.AreEqual(alist.Count, idx.ItemCount);
for (int i = 0; i < list.Count; i++)
{
Assert.AreEqual(i, idx.IndexOfAny(list[i]));
}
for (int i = 0; i < sec.Count; i++)
{
Assert.AreEqual(remove ? -1 : start + i, idx.IndexOfAny(sec[i]));
}
}
alist.RemoveObserver(tob);
alist.RemoveObserver(idx);
}
protected void CreateIndex()
{
Debug.Assert(_indexer == null);
_indexer = new AListIndexer <int, T>();
AddObserver(_indexer);
}
public void SimpleObserverTests2()
{
// Note: derived class must test observers with replacement and other
// functions that this class does not have access to.
int index;
List <T> list;
const int InitialCount = 50;
AList alist = this.NewList(InitialCount, out list);
var tob = new AListTestObserver <int, T>();
var idx = new AListIndexer <int, T>();
alist.AddObserver(tob);
alist.AddObserver(idx);
Assert.AreEqual(0, tob.CheckPointCount);
idx.VerifyCorrectness();
for (int item = -50; item < 0; item++)
{
// Add
index = this.Add(alist, item, item + 50);
T item2 = alist[index];
Assert.AreEqual(item + 51, tob.CheckPointCount);
Assert.AreEqual(alist.Count, idx.ItemCount);
Assert.AreEqual(index, idx.IndexOfAny(item2));
}
idx.VerifyCorrectness();
// Modifying a clone must have no effect.
//var clone = alist.Clone();
//index = Add(clone, 999, clone.Count);
//Assert.AreEqual(alist.Count, tob.CheckPointCount + InitialCount);
//Assert.AreEqual(-1, idx.IndexOfAny(clone[index]));
//idx.VerifyCorrectness();
while (alist.Count > 2)
{
// RemoveAt
int at = this._r.Next(alist.Count);
T item = alist[at];
Assert.AreEqual(at, idx.IndexOfAny(item));
alist.RemoveAt(at);
Assert.AreEqual(-1, idx.IndexOfAny(item));
Assert.AreEqual(alist.Count, idx.ItemCount);
// RemoveRange
at = this._r.Next(alist.Count);
item = alist[at];
int amount = this._r.Next(1, Math.Min(9, alist.Count - at));
alist.RemoveRange(at, amount);
Assert.AreEqual(-1, idx.IndexOfAny(item));
Assert.AreEqual(alist.Count, idx.ItemCount);
idx.VerifyCorrectness();
}
tob.CheckPoint();
alist.Clear();
Assert.AreEqual(0, idx.ItemCount);
Assert.AreEqual(-1, idx.IndexOfAny(default(T)));
}
