public void Peek()
{
Assert.AreEqual(new CloneableType("three"), _stack.Peek());
Assert.AreEqual(new CloneableType("three"), _stack.Peek());
_stack.Pop();
Assert.AreEqual(new CloneableType("two"), _stack.Peek());
_stack.Clear();
Assert.Throws <InvalidOperationException>(() => _stack.Peek());
}
public void ShouldMoveDuplicateItemToTopOfList(string[] stringsToPush, string expectedString, int expectedCount)
{
StringStack stringStack = new StringStack(stringsToPush);
Assert.AreEqual(expectedString, stringStack.Peek());
Assert.AreEqual(expectedCount, stringStack.Count);
}
public void ShouldRemoveOldestStringWhenAtCapacityAndNewStringIsAdded()
{
StringStack stringStack = new StringStack(3);
stringStack.Push("apple");
stringStack.Push("orange");
stringStack.Push("pineapple");
stringStack.Push("pear");
Assert.AreEqual(3, stringStack.Count);
Assert.AreEqual("pear", stringStack.Peek());
}
public void ShouldReturnMostRecentlyAddedStringAsTopItem(string[] stringsToPush, string expected)
{
StringStack stringStack = new StringStack(stringsToPush);
Assert.AreEqual(expected, stringStack.Peek());
}