public void Can_repeat()
{
//arrange
var history = new HistoryBuffer <string>();
string currentItem = null, previousItem = null;
history.HistoryRepeated += delegate(object sender, HistoryEventArgs <string> args)
{
args.TryGetCurrentItem(out currentItem);
args.TryGetPreviousItem(out previousItem);
};
//act
history.RememberNew("first item");
history.RememberNew("second item");
history.Undo();
history.Repeat();
//assert
currentItem.Should().Be("second item");
previousItem.Should().Be("first item");
history.CurrentItem.Should().Be("second item");
history.Count.Should().Be(2);
}
public void Should_remove_obsolete_items_after_adding_new_one()
{
//arrange
var history = new HistoryBuffer <string>();
//act
history.RememberNew("first item");
history.RememberNew("second item");
history.Undo();
history.RememberNew("third item");
//assert
history.CurrentItem.Should().Be("third item");
history.Count.Should().Be(2);
}