public void StackTest()
{
var stack = new LinkedListStack <int>();
//insert 1 to 10 into stack
for (int i = 1; i <= 10; i++)
{
stack.Push(i);
}
//size should be 10
Assert.Equal(10, stack.Size());
//pop items and assert to ensure FIFO
for (int i = 10; i > 0; i--)
{
var value = stack.Pop();
Assert.Equal(i, value);
}
//size should be 0
Assert.Equal(0, stack.Size());
//poping on empty stack should throw an exception
Assert.Throws <InvalidOperationException>(() => stack.Pop());
}