public void CloseTask_MovesItemFromWorkInProgressToDone()
{
sut.CreateTask(taskId, TaskDescription);
IEnumerable <Task> initialBacklogTasks = sut.GetBacklogTasks();
var id = initialBacklogTasks.First().Id;
sut.SheduleTask(id);
sut.BeginWorkOnTask(id);
sut.CloseTask(id);
IEnumerable <Task> closedTasks = sut.GetClosedTasks();
IEnumerable <Task> tasksInProgress = sut.GetTasksInProgress();
closedTasks.First().Description.ShouldEqual(TaskDescription);
tasksInProgress.Count().ShouldEqual(0);
}