public void Can_overflow_limited_history()
{
//arrange
var history = new HistoryBuffer <string>(maxSize: 2);
string currentItem = null, previousItem = null;
history.HistoryOverflowed += delegate(object sender, HistoryEventArgs <string> args)
{
args.TryGetCurrentItem(out currentItem);
args.TryGetPreviousItem(out previousItem);
};
//act
history.RememberNew("first item");
history.RememberNew("second item");
history.RememberNew("third item");
//assert
currentItem.Should().Be("third item");
previousItem.Should().Be("second item");
history.GetAll().ToArray().Should().BeEquivalentTo(new[]
{
"second item", "third item"
});
}
public void Can_clear_history()
{
//arrange
var history = new HistoryBuffer <string>(maxSize: 2);
//act
history.RememberNew("first item");
history.RememberNew("second item");
history.RememberNew("third item");
history.Clear();
//assert
history.Count.Should().Be(0);
history.GetAll().ToArray().Should().BeEmpty();
}