public void ShouldCleanEmptyStack()
{
CalculatorContainer container = new CalculatorContainer();
container.PushItem(5);
container.PushItem(5);
Assert.That(container.Count() > 0);
container.Clean();
Assert.That(container.Count() == 0);
}
public void ShouldCoutStack()
{
CalculatorContainer container = new CalculatorContainer();
Assert.AreEqual(0, container.Count());
container.PushItem(5);
container.PushItem(7);
Assert.AreEqual(2, container.Count());
container.PushItem(19);
Assert.AreEqual(3, container.Count());
}
public void ShouldPushItemToStack()
{
CalculatorContainer container = new CalculatorContainer();
container.PushItem(5);
Assert.That(container.Count() == 1);
var lastItem = container.PopItem();
Assert.AreEqual(5, lastItem);
}