public void ShouldGetNullIfElementIsNotRegistered()
{
var timelineBarRegistry = new TimelineBarRegistry();
var result = timelineBarRegistry.GetTimelineBarElement("key");
Assert.IsNull(result);
}
public void ShouldRegisterTimelineBarElement()
{
var timelineBarElement = new MockTimelineBarElement();
var timelineBarRegistry = new TimelineBarRegistry();
timelineBarRegistry.RegisterTimelineBarElement("key", () => timelineBarElement);
Assert.AreEqual(timelineBarElement, timelineBarRegistry.GetTimelineBarElement("key"));
}