public void Ctor_Collection_Multiple()
{
var d = new DisposedCounter();
var s = new CachedSequence <int> (d.Values(100));
Assert.AreEqual(0, d.Disposed);
Assert.AreEqual(0, s.Head);
Assert.IsNotNull(s.Tail);
var t = s.Tail;
Assert.AreEqual(0, d.Disposed);
Assert.AreEqual(1, t.Head);
Assert.IsNotNull(t.Tail);
int c = 98;
while (c-- > 0)
{
t = t.Tail;
}
Assert.AreEqual(null, t.Tail);
Assert.AreEqual(1, d.Disposed);
}
public void Ctor_Collection_Single_CheckDisposed()
{
var d = new DisposedCounter();
var s = new CachedSequence <int> (d.Values(1));
Assert.AreEqual(1, d.Disposed);
Assert.AreEqual(0, s.Head);
Assert.AreEqual(null, s.Tail);
}
public void GetEnumerator_DisposeDisposesIterator()
{
var d = new DisposedCounter();
var s = CreateSequence(d.Values(2));
var i = s.GetEnumerator();
Assert.IsTrue(i.MoveNext());
i.Dispose();
Assert.AreEqual(1, d.Disposed);
}
public void GetEnumerator_Dispose_Is_Forwarded()
{
var d = new DisposedCounter();
var s = new CachedSequence <int> (d.Values(100));
var q = s.Take(1);
int n = 0;
foreach (var e in q)
{
Assert.AreEqual(n, e);
++n;
}
Assert.AreEqual(1, n);
// When the CachedSequence<T> enumerator is disposed,
// the underlying enumerator should also be disposed.
Assert.AreEqual(1, d.Disposed);
// Note that we've "lost" 99 elements
Assert.AreEqual(2, s.Count());
}