public void FilterTestFilter0min()
{
QuantityFilter q = new QuantityFilter(100, 0);
List<NewsItem> gottenNews =
q.Filter(Archivist, Archivist.GetNews(new NewsQuery()));
Assert.AreEqual(0, gottenNews.Count());
}
public void FilterTestReadingspeedIsZero()
{
Archivist.SetReadingSpeed(0);
QuantityFilter q = new QuantityFilter(10, 20, 5);
List<NewsItem> gottenNews =
q.Filter(Archivist, Archivist.GetNews(new NewsQuery()));
int expected = 0;
int actual = gottenNews.Count;
Assert.AreEqual(expected, actual);
}
public void FilterTestFilterMax2MinEach4MinMax2ItemsMax()
{
QuantityFilter q = new QuantityFilter(2, 4, 2);
List<NewsItem> gottenNews =
q.Filter(Archivist, Archivist.GetNews(new NewsQuery()));
// Assert that a maximum of two news items were fetched.
Assert.IsTrue(gottenNews.Count <= 2,
"More than two NewsItems were fetched: " + gottenNews.Count);
// Assert that each news item can be read in 5 or less minutes.
int totalReadTime = 0;
for (int i = 0; i < gottenNews.Count; i++)
{
int readTime = (int) ((double) gottenNews[i].WordCount /
(double) Archivist.GetReadingSpeed());
totalReadTime += readTime;
Assert.IsTrue(readTime <= 5,
"NewsItem at index " + i + " takes " + readTime + " minutes to read.");
}
Assert.IsTrue(totalReadTime <= 4,
"The news did not take 4 or less minutes to read but " +
totalReadTime + " minutes.");
}
public void FilterTestFilterMax2MinEach()
{
QuantityFilter q = new QuantityFilter(100, maxItemTime: 2);
List<NewsItem> gottenNews =
q.Filter(Archivist, Archivist.GetNews(new NewsQuery()));
// Assert that each news item can be read in 5 or less minutes.
for (int i = 0; i < gottenNews.Count; i++)
{
int readTime = (int) ((double) gottenNews[i].WordCount /
(double) Archivist.GetReadingSpeed());
Assert.IsTrue(readTime <= 5,
"NewsItem at index " + i + " takes " + readTime + " minutes to read.");
}
}
public void FilterTestFilter50minNotFull()
{
QuantityFilter q = new QuantityFilter(100, 50);
List<NewsItem> gottenNews =
q.Filter(Archivist, Archivist.GetNews(new NewsQuery()));
// Count the time it will take to read the gotten news.
int readTime = 0;
foreach (NewsItem n in gottenNews)
{
readTime += (int) ((double) n.WordCount /
(double) Archivist.GetReadingSpeed());
}
Assert.IsTrue(readTime <= 25 && readTime >= 5,
"The news " + readTime + " minutes to read.");
}
/// <summary>
/// Curates undread news from the given <c>Archivist</c> instance based
/// on a maximum reading time, a maximum individual item reading time
/// and a limit.
/// </summary>
/// <param name="archivist">
/// The <c>Archivist</c> instance giving access to the news that
/// should be curated.
/// </param>
/// <param name="limit">
/// The maximum number of news to return.
/// </param>
/// <param name="maxTime">
/// The maximum reading time for the curated news.
/// </param>
/// <param name="maxItemTime">
/// The maximum reading time per news item.
/// </param>
/// <returns>
/// A list of unread, curated <c>NewsItem</c>s received from the
/// <c>Archivist</c> instance.
/// </returns>
public static List<NewsItem> GetCuratedNews(Archivist archivist,
int limit, int maxTime = -1, int maxItemTime = - 1)
{
// Get cached data and update if null.
List<NewsItem> curatedNews = CachedNews;
if (curatedNews == null)
{
// Update needed.
NewsQuery query = new NewsQuery();
// Only fetch unread news.
query.Read = ReadStatus.Unread;
query.OrderDateDesc = true;
query.Limit = 100;
curatedNews = archivist.GetNews(query);
// If no news was found then there's no need to filter them.
if (curatedNews.Count == 0)
{
return curatedNews;
}
// Filter for interesting news.
InterestFilter interestFilter = new InterestFilter();
curatedNews = interestFilter.Filter(archivist, curatedNews);
// Filter redundancy.
RedundancyFilter redundancyFilter = new RedundancyFilter();
curatedNews = redundancyFilter.Filter(archivist, curatedNews);
// Update cache.
CachedNews = curatedNews;
}
// Filter quantity.
QuantityFilter quantityFilter = new QuantityFilter(limit,
maxTime, maxItemTime);
curatedNews = quantityFilter.Filter(archivist, curatedNews);
// Return curated list.
return curatedNews;
}
