public void CheckStackCollection()
{
StackCollection <int> q = new StackCollection <int>();
q.Push(1);
q.Push(2);
q.Push(1);
q.Push(3);
q.Push(1);
var expected = new int[] { 1, 2, 1, 3, 1 };
CollectionAssert.AreEqual(expected, q);
q.Pop();
expected = new int[] { 1, 2, 1, 3 };
CollectionAssert.AreEqual(expected, q);
q.Pop();
expected = new int[] { 1, 2, 1 };
CollectionAssert.AreEqual(expected, q);
q.Pop();
expected = new int[] { 1, 2 };
CollectionAssert.AreEqual(expected, q);
Assert.AreEqual(2, q.Peek());
}
