public void TileFetcherShouldBehaveProperlyWithNoisyResponses()
{
// Arrange
var schema = new GlobalSphericalMercator();
var tileSource = new TileSource(new SometimesFailingTileProvider(), schema);
var memoryCache = new MemoryCache<Feature>(14, 17);
var tileFetcher = new TileFetcher(tileSource, memoryCache);
var random = new Random(31747074);
// Act
for (int i = 0; i < 100; i++)
{
var randomLevel = "5";
var randomCol = random.Next(schema.GetMatrixWidth(randomLevel));
var randomRow = random.Next(schema.GetMatrixHeight(randomLevel));
var tileRange = new TileRange(randomCol - 2, randomRow - 2, 5, 5);
var unitsPerPixel = schema.Resolutions[randomLevel].UnitsPerPixel;
var extent = TileTransform.TileToWorld(tileRange, randomLevel, schema);
tileFetcher.ViewChanged(TileTransform.TileToWorld(tileRange, randomLevel, schema).ToBoundingBox(),unitsPerPixel );
var tileInfos = schema.GetTileInfos(extent, randomLevel);
foreach (var tileInfo in tileInfos)
{
var tiles = memoryCache.Find(tileInfo.Index);
}
}
// Assert
Assert.True(memoryCache.TileCount == 0);
}
public void TileFetcherShouldBehaveProperlyWithFailingTileRequests()
{
// Arrange
var schema = new GlobalSphericalMercator();
var tileSource = new TileSource(new FailingTileProvider(), schema);
var memoryCache = new MemoryCache<Feature>();
var tileFetcher = new TileFetcher(tileSource, memoryCache);
// Act
tileFetcher.ViewChanged(schema.Extent.ToBoundingBox(), schema.Resolutions["2"].UnitsPerPixel);
while (tileFetcher.Busy) { }
// Assert
Assert.True(memoryCache.TileCount == 0);
}
protected void SetTileSource(ITileSource source)
{
if (_tileSource != null)
{
_tileFetcher.AbortFetch();
_tileFetcher.DataChanged -= TileFetcherDataChanged;
_tileFetcher.PropertyChanged -= TileFetcherOnPropertyChanged;
_tileFetcher = null;
_memoryCache.Clear();
}
_tileSource = source;
if (source == null) return;
_tileFetcher = new TileFetcher(source, _memoryCache, _maxRetries, _maxThreads, _fetchStrategy);
_tileFetcher.DataChanged += TileFetcherDataChanged;
_tileFetcher.PropertyChanged += TileFetcherOnPropertyChanged;
OnPropertyChanged("Envelope");
}
public void TileFetcherWithReturningNull()
{
// Arrange
var tileProvider = new NullTileProvider();
var tileSchema = new GlobalSphericalMercator();
var tileSource = new TileSource(tileProvider, tileSchema);
var tileFetcher = new TileFetcher(tileSource, new MemoryCache<Feature>());
// Act
for (int i = 0; i < 300; i++)
{
for (int j = 0; j < 5; j++)
{
tileFetcher.ViewChanged(tileSchema.Extent.ToBoundingBox(), tileSchema.Resolutions[j.ToString()].UnitsPerPixel);
System.Threading.Thread.Sleep(10);
}
}
// Assert
while (tileFetcher.Busy) { }
Assert.Pass("The fetcher did not go into an infinite loop");
}
protected void SetTileSource(ITileSource source)
{
if (_tileSource != null)
{
// Is causing thread leak _tileFetcher.AbortFetch();
_tileFetcher.DataChanged -= TileFetcherDataChanged;
_tileFetcher.PropertyChanged -= TileFetcherOnPropertyChanged;
_tileFetcher = null;
_memoryCache.Clear();
}
_tileSource = source;
if (_tileSource != null)
{
Attribution.Text = _tileSource.Attribution.Text;
Attribution.Url = _tileSource.Attribution.Url;
_tileFetcher = new TileFetcher(source, _memoryCache, _maxRetries, _maxThreads, _fetchStrategy);
_tileFetcher.DataChanged += TileFetcherDataChanged;
_tileFetcher.PropertyChanged += TileFetcherOnPropertyChanged;
OnPropertyChanged(nameof(Envelope));
}
}
protected void SetTileSource(ITileSource source)
{
tileSource = source;
tileFetcher = new TileFetcher(source, memoryCache, maxRetries);
tileFetcher.DataChanged += TileFetcherDataChanged;
OnPropertyChanged("Envelope");
}