public void TestInvalidatedEnumeratorDetection()
{
Deque <int> intDeque = createDeque(8);
using (IEnumerator <int> enumerator = intDeque.GetEnumerator()) {
Assert.IsTrue(enumerator.MoveNext());
intDeque.AddFirst(12345);
Assert.Throws <InvalidOperationException>(
delegate() { enumerator.MoveNext(); }
);
}
}
public void TestThrowOnInvalidEnumeratorPosition()
{
Deque <int> intDeque = createNonNormalizedDeque(40);
using (IEnumerator <int> enumerator = intDeque.GetEnumerator()) {
Assert.Throws <InvalidOperationException>(
delegate() { Console.WriteLine(enumerator.Current); }
);
while (enumerator.MoveNext())
{
}
Assert.Throws <InvalidOperationException>(
delegate() { Console.WriteLine(enumerator.Current); }
);
}
}
public void TestEnumerator()
{
Deque <int> intDeque = createNonNormalizedDeque(40);
for (int testRun = 0; testRun < 2; ++testRun)
{
using (IEnumerator <int> enumerator = intDeque.GetEnumerator()) {
for (int index = 0; index < intDeque.Count; ++index)
{
Assert.IsTrue(enumerator.MoveNext());
Assert.AreEqual(index, enumerator.Current);
}
Assert.IsFalse(enumerator.MoveNext());
enumerator.Reset();
}
}
}