public void Clear_ClearStackWithTwoNumbersShouldWork()
{
// Arrange
StackLinkedList <int> sut = new StackLinkedList <int>();
bool expected = true;
// Act
sut.Add(int.MaxValue);
sut.Add(int.MinValue);
sut.Clear();
bool actual = sut.IsEmpty();
// Assert
Assert.Equal(expected, actual);
}