public void Test1_2_Should_Be_Empty_After_Pop()
{
var bookSet = new BookSet(1, 2);
var result = bookSet.PopCart(5);
result = bookSet.PopCart(5);
Assert.That(result, Is.EquivalentTo(new int[] {}));
}
public void Test1_2()
{
var bookSet = new BookSet(1, 2);
var result = bookSet.PopCart(5);
Assert.That(result, Is.EquivalentTo(new[] { 1, 2 }));
}