public void EnsureGetSimilarArtistsReturnsErrorForFailedCall()
{
IMusicClient client = new MusicClient("test", "test", "gb", new FailedMockApiRequestHandler());
client.GetSimilarArtists(
(ListResponse<Artist> result) =>
{
Assert.IsNotNull(result, "Expected a result");
Assert.IsNotNull(result.StatusCode, "Expected a status code");
Assert.IsTrue(result.StatusCode.HasValue, "Expected a status code");
Assert.AreNotEqual(HttpStatusCode.OK, result.StatusCode.Value, "Expected a non-OK response");
Assert.IsNotNull(result.Error, "Expected an error");
Assert.AreEqual(typeof(ApiCallFailedException), result.Error.GetType(), "Expected an ApiCallFailedException");
},
"test");
}
public void EnsureGetSimilarArtistsReturnsItems()
{
IMusicClient client = new MusicClient("test", "test", "gb", new SuccessfulMockApiRequestHandler());
client.GetSimilarArtists(
(ListResponse<Artist> result) =>
{
Assert.IsNotNull(result, "Expected a result");
Assert.IsNotNull(result.StatusCode, "Expected a status code");
Assert.IsTrue(result.StatusCode.HasValue, "Expected a status code");
Assert.AreEqual(HttpStatusCode.OK, result.StatusCode.Value, "Expected a 200 response");
Assert.IsNotNull(result.Result, "Expected a list of results");
Assert.IsNull(result.Error, "Expected no error");
Assert.Greater(result.Result.Count, 0, "Expected more than 0 results");
},
new Artist() { Id = "test" });
}
public void EnsureGetSimilarArtistsReturnsItems()
{
IMusicClient client = new MusicClient("test", "test", "gb", new MockApiRequestHandler(Resources.artist_similar));
client.GetSimilarArtists(
(ListResponse<Artist> result) =>
{
Assert.IsNotNull(result, "Expected a result");
Assert.IsNotNull(result.StatusCode, "Expected a status code");
Assert.IsTrue(result.StatusCode.HasValue, "Expected a status code");
Assert.AreEqual(HttpStatusCode.OK, result.StatusCode.Value, "Expected a 200 response");
Assert.IsNotNull(result.Result, "Expected a list of results");
Assert.IsNull(result.Error, "Expected no error");
Assert.Greater(result.Result.Count, 0, "Expected more than 0 results");
foreach (Artist artist in result.Result)
{
Assert.IsFalse(string.IsNullOrEmpty(artist.Id), "Expected Id to be populated");
Assert.IsFalse(string.IsNullOrEmpty(artist.Name), "Expected Name to be populated");
Assert.IsNotNull(artist.Genres, "Expected a genre list");
Assert.Greater(artist.Genres.Length, 0, "Expected more than 0 genres");
}
},
new Artist() { Id = "test" });
}
public void EnsureGetSimilarArtistsThrowsExceptionForNullCallback()
{
IMusicClient client = new MusicClient("test", "test", "gb", new MockApiRequestHandler(Resources.artist_similar));
client.GetSimilarArtists(null, "test");
}
public void EnsureGetSimilarArtistsThrowsExceptionForNullArtist()
{
Artist nullArtist = null;
IMusicClient client = new MusicClient("test", "test", "gb", new MockApiRequestHandler(Resources.artist_similar));
client.GetSimilarArtists((ListResponse<Artist> result) => { }, nullArtist);
}
public void EnsureGetSimilarArtistsThrowsExceptionForNullArtistId()
{
string nullId = null;
IMusicClient client = new MusicClient("test", "test", "gb", new SuccessfulMockApiRequestHandler());
client.GetSimilarArtists((ListResponse<Artist> result) => { }, nullId);
}
/// <summary>
/// Builds the recommended artists lists.
/// This method initiates a chain of requests, which requests similar
/// artists information for each of the local artists one after another.
/// </summary>
private void FetchRecommendations()
{
if (!initialized || localArtists.Count <= recommendResponses)
{
if (initialized && App.ViewModel.Recommendations.Count <= 0)
{
App.ViewModel.NoRecommendedVisibility = Visibility.Visible;
}
else
{
App.ViewModel.NoRecommendedVisibility = Visibility.Collapsed;
}
// limit the number of recommended artists to 20
if (localArtists.Count == recommendResponses)
{
int i = App.ViewModel.Recommendations.Count - 1;
while (i > 20)
{
App.ViewModel.Recommendations.RemoveAt(i);
i--;
}
}
return;
}
client.GetSimilarArtists((ListResponse <Artist> response) =>
{
Deployment.Current.Dispatcher.BeginInvoke(() =>
{
// Use results
if (response != null && response.Result != null && response.Result.Count > 0)
{
foreach (Artist a in response.Result)
{
bool handled = false;
// Don't recommend artists already stored in device.
if (App.ViewModel.IsLocalArtist(a.Name))
{
handled = true;
}
// Check if the artist has already been recommended -> add some weight
// to recommendation.
if (!handled)
{
for (int i = 0; i < App.ViewModel.Recommendations.Count; i++)
{
if (App.ViewModel.Recommendations[i].Name == a.Name)
{
handled = true;
App.ViewModel.Recommendations[i].SimilarArtistCount++;
// position according to weight
if (i > 1)
{
int j = 1;
for (j = i - 1; j > 1; j--)
{
if (App.ViewModel.Recommendations[j].SimilarArtistCount >=
App.ViewModel.Recommendations[i].SimilarArtistCount)
{
j++; // This item (j) has been ranked higher or equal - correct index is one more
break;
}
}
if (i > j)
{
ArtistModel artist = App.ViewModel.Recommendations[i];
App.ViewModel.Recommendations.RemoveAt(i);
App.ViewModel.Recommendations.Insert(j, artist);
break;
}
}
}
}
}
// If the artist is not present in the device and has not yet been
// recommended, do it now.
if (!handled)
{
App.ViewModel.Recommendations.Add(new ArtistModel()
{
Name = a.Name,
Country = CountryCodes.CountryNameFromTwoLetter(a.Country),
Genres = a.Genres[0].Name,
Thumb100Uri = a.Thumb100Uri,
Thumb200Uri = a.Thumb200Uri,
Thumb320Uri = a.Thumb320Uri,
Id = a.Id,
SimilarArtistCount = 1,
ItemWidth = "205",
ItemHeight = "205"
});
}
}
}
if (response != null && response.Error != null)
{
ShowNokiaMusicApiError();
}
HideProgressIndicator("FetchRecommendations()");
recommendResponses++;
FetchRecommendations();
});
}, localArtists[recommendResponses].Id);
ShowProgressIndicator("FetchRecommendations()");
}
