public void NoBooks()
{
var ratingSystem = new RatingSystem();
var results = ratingSystem.ComputeRating(new RatingInput[] { });
Assert.AreEqual(0, results.Count());
}
public void SimpleRatings()
{
var tests = new[]
{
new RatingInput {
BookId = Guid.NewGuid(), Title = "abc", IsForeign = false
},
new RatingInput {
BookId = Guid.NewGuid(), Title = "abc", IsForeign = true
},
new RatingInput {
BookId = Guid.NewGuid(), Title = "super abc", IsForeign = false
},
new RatingInput {
BookId = Guid.NewGuid(), Title = "super abc", IsForeign = true
},
};
var ratingSystem = new RatingSystem();
var ratings = ratingSystem.ComputeRating(tests);
Assert.AreEqual(
"0.00, 0.00, 100.00, 120.00",
string.Join(", ", ratings.Select(r => r.Value.ToString("f2", CultureInfo.InvariantCulture))));
}
public void UnknownTitle()
{
var bookWithoutTitle = new RatingInput
{
BookId = Guid.NewGuid(),
Title = null,
IsForeign = false
};
var ratingSystem = new RatingSystem();
var result = ratingSystem.ComputeRating(new[] { bookWithoutTitle }).Single();
Assert.AreEqual(bookWithoutTitle.BookId, result.BookId);
Assert.AreEqual(0, result.Value);
}