// Break this apart and move functionality to other classes if it seems fitting
private async void CheckMetadataButton_Click(object sender, RoutedEventArgs e)
{
headerTextBlock.Text = "Checking for updated metadata, please wait...";
StartBusyIndicator();
// populates the API response field for each metadata file that is flagged for update
foreach (var file in userSelectedFiles.Where(f => f.MetadataFile.CheckForUpdates == true))
{
file.MetadataFile.Response = await GracenoteAPI.QueryAsync(file.MetadataFile);
}
// filters all userSelectedFiles to only those where an update is needed
var systemFilesPendingUpdates = userSelectedFiles.Where(f => f.MetadataFile.IsUpdateNeeded() == true);
// checks to see if there are any updates needed
bool updateNeeded = systemFilesPendingUpdates.Any();
if (updateNeeded)
{
var metadataFilesPendingUpdates = systemFilesPendingUpdates.Select(f => f.MetadataFile).Cast <MetadataFile>().ToList();
metadataFilesPendingUpdates.ForEach(f => f.PopulateUpdateList());
_allUpdates = ExtractUpdates(metadataFilesPendingUpdates);
var updaterWindow = new UpdaterWindow(_allUpdates);
}
else
{
headerTextBlock.Text = "All songs are up to date.";
}
StopBusyIndicator();
}
public void Query_Test_ParsedXmlHasNoNullValuesGivenValidInput()
{
var metadataFile = GetMetadataFile();
var response = GracenoteAPI.Query(metadataFile);
Assert.IsFalse(HasNullValues(response));
}
public void Query_Test_ReturnsNonNullResultGivenValidInput()
{
var metadataFile = GetMetadataFile();
var response = GracenoteAPI.Query(metadataFile);
Assert.IsNotNull(response);
}
public void Query_Test_ThrowsNullReferenceExceptionGivenEmptyFieldsInInput()
{
var metadataFile = GetMetadataFile();
metadataFile.Artist = string.Empty;
metadataFile.Album = string.Empty;
metadataFile.Title = string.Empty;
Assert.ThrowsException <NullReferenceException>(() => GracenoteAPI.Query(metadataFile));
}
public void Query_Test_ThrowsNullReferenceExceptionGivenNullInput()
{
MetadataFile nullFile = null;
Assert.ThrowsException <NullReferenceException>(() => GracenoteAPI.Query(nullFile));
}