public void TestEnumerator()
{
var q = new PriorityQueue<int>();
var e = q.GetEnumerator();
Assert.Throws<InvalidOperationException>(() =>
{
var v = e.Current;
});
Assert.IsFalse(e.MoveNext());
Assert.Throws<InvalidOperationException>(() =>
{
var v = e.Current;
});
Assert.IsFalse(e.MoveNext());
}
public void TestEnumeratorWhileModify()
{
var q = new PriorityQueue<int>();
q.Enqueue(3);
var e = q.GetEnumerator();
Assert.IsTrue(e.MoveNext());
q.Dequeue();
Assert.Throws<InvalidOperationException>(() => e.MoveNext());
}
