public void LastReturnsLastValueAfterPoppingPreviousValues(int itemsToRemove)
{
var items = new List <object>();
var sut = new BuildHistory();
for (var index = 0; index < 5; index++)
{
var item = Model.Create <Person>() !;
items.Add(item);
sut.Push(item);
}
sut.Last.Should().BeSameAs(items.Last());
for (var index = 0; index <= itemsToRemove; index++)
{
sut.Last.Should().BeSameAs(items[4 - index]);
sut.Pop();
sut.Last.Should().BeSameAs(items[3 - index]);
}
}
public void PopThrowsExceptionWhenHistoryIsEmpty()
{
var sut = new BuildHistory();
Action action = () => sut.Pop();
action.Should().Throw <InvalidOperationException>();
}
public void LastReturnsNullAfterLastItemRemoved()
{
var sut = new BuildHistory();
var item = Model.Create <Person>() !;
sut.Push(item);
sut.Last.Should().BeSameAs(item);
sut.Pop();
sut.Last.Should().BeNull();
}