public void IndexOf()
{
var deque = new Deque<int>(new[] { 2, 3, 4, 5, 6 });
Assert.AreEqual(0, deque.IndexOf(2));
Assert.AreEqual(4, deque.IndexOf(6));
Assert.AreEqual(-1, deque.IndexOf(7));
deque = new Deque<int>(new[] { 2, 3, 4, 5, 6 });
deque.EnqueueHead(1);
deque.EnqueueHead(0);
Assert.AreEqual(0, deque.IndexOf(0));
Assert.AreEqual(2, deque.IndexOf(2));
Assert.AreEqual(6, deque.IndexOf(6));
Assert.AreEqual(-1, deque.IndexOf(7));
var deque2 = new Deque<string>();
deque2.EnqueueHead("item 1");
deque2.EnqueueHead(null);
Assert.AreEqual(1, deque2.IndexOf("item 1"));
Assert.AreEqual(0, deque2.IndexOf(null));
Assert.AreEqual(-1, deque2.IndexOf(String.Empty));
Assert.AreEqual(-1, deque2.IndexOf("item 2"));
}
public void TestIndexOf(int count) {
Deque<int> intDeque = new Deque<int>(16);
for(int item = 0; item < count; ++item) {
intDeque.AddLast(item);
}
for(int item = 0; item < count; ++item) {
Assert.AreEqual(item, intDeque.IndexOf(item));
}
Assert.AreEqual(-1, intDeque.IndexOf(count));
}