public void Clear()
{
IntStack stack = new IntStack(1);
stack.Push(1);
Assert.AreEqual(stack.Peek(), 1);
Assert.AreEqual(stack.Count, 1);
stack.Push(2);
Assert.AreEqual(stack.Peek(), 2);
Assert.AreEqual(stack.Count, 2);
stack.Push(4);
Assert.AreEqual(stack.Peek(), 4);
Assert.AreEqual(stack.Count, 3);
stack.Clear();
Assert.AreEqual(stack.Count, 0);
stack.Push(4);
Assert.AreEqual(stack.Peek(), 4);
Assert.AreEqual(stack.Count, 1);
stack.Push(8);
Assert.AreEqual(stack.Peek(), 8);
Assert.AreEqual(stack.Count, 2);
stack.Push(9);
Assert.AreEqual(stack.Peek(), 9);
Assert.AreEqual(stack.Count, 3);
}
public void NonEmpty()
{
IntStack stack = new IntStack(4);
Assert.IsTrue(stack.IsEmpty);
stack.Push(1);
Assert.IsFalse(stack.IsEmpty);
stack.Pop();
Assert.IsTrue(stack.IsEmpty);
}
public void PopWithResize()
{
IntStack stack = new IntStack(1);
stack.Push(1);
stack.Push(2);
stack.Push(3);
Assert.AreEqual(stack.Pop(), 3);
Assert.AreEqual(stack.Pop(), 2);
Assert.AreEqual(stack.Pop(), 1);
}
public void PushDuplicate()
{
IntStack stack = new IntStack(4);
stack.Push(1);
Assert.AreEqual(stack.Peek(), 1);
Assert.AreEqual(stack.Count, 1);
stack.Push(stack.Peek());
Assert.AreEqual(stack.Peek(), 1);
Assert.AreEqual(stack.Count, 2);
stack.Push(stack.Peek());
Assert.AreEqual(stack.Peek(), 1);
Assert.AreEqual(stack.Count, 3);
}
public void PushWithResize()
{
IntStack stack = new IntStack(1);
stack.Push(1);
Assert.AreEqual(stack.Peek(), 1);
Assert.AreEqual(stack.Count, 1);
stack.Push(2);
Assert.AreEqual(stack.Peek(), 2);
Assert.AreEqual(stack.Count, 2);
stack.Push(4);
Assert.AreEqual(stack.Peek(), 4);
Assert.AreEqual(stack.Count, 3);
}