public void MetadataHttpError()
{
var handler = new Mock <MockHttpHandler>()
{
CallBase = true
};
handler
.Setup(f => f.Send(It.IsAny <HttpRequestMessage>()))
.Returns(new HttpResponseMessage
{
StatusCode = HttpStatusCode.InternalServerError
});
var httpClient = new HttpClient(handler.Object);
var filename = @"http://example.com/my_imaginary_file.tif";
var defaultTileWidth = 512;
try
{
TiffExpander.GetMetadata(httpClient, Log, new Uri(filename), defaultTileWidth, string.Empty);
}
catch (AggregateException ex)
{
throw ex.InnerException;
}
}
public void MetadataFileNotFound()
{
var filename = Path.GetFullPath(@"my_imaginary_file.tif");
var defaultTileWidth = 512;
var result = TiffExpander.GetMetadata(null, Log, new Uri(filename), defaultTileWidth, string.Empty);
}
public void MetadataFromHttp()
{
var tiff = Path.GetFullPath(@"test_image.tif");
using (var fs = File.OpenRead(tiff))
{
var handler = new Mock <MockHttpHandler>()
{
CallBase = true
};
handler
.Setup(f => f.Send(It.IsAny <HttpRequestMessage>()))
.Returns(new HttpResponseMessage
{
StatusCode = HttpStatusCode.OK,
Content = new StreamContent(fs)
});
var httpClient = new HttpClient(handler.Object);
var filename = @"http://example.com/my_imaginary_file.tif";
var defaultTileWidth = 512;
var expectedWidth = 1000;
var expectedHeight = 1000;
var result = TiffExpander.GetMetadata(httpClient, Log, new Uri(filename), defaultTileWidth, string.Empty);
Assert.IsNotNull(result);
Assert.AreEqual(defaultTileWidth, result.TileWidth, "Returned TileWidth does not match expected value");
Assert.AreEqual(0, result.TileHeight, "TileHeight should not be set");
Assert.AreEqual(expectedWidth, result.Width, "Expected Width does not match returned value");
Assert.AreEqual(expectedHeight, result.Height, "Expected Height does not match returned value");
Assert.AreEqual(6, result.ScalingLevels, "Returned ScalingLevels does not match expected value");
}
}
public void MetadataHttpTaskCanceledException()
{
var handler = new Mock <MockHttpHandler>()
{
CallBase = true
};
handler
.Setup(f => f.Send(It.IsAny <HttpRequestMessage>()))
.Throws(new TaskCanceledException(Task.FromCanceled(new System.Threading.CancellationToken(true))));
var httpClient = new HttpClient(handler.Object);
var logger = new Mock <ILogger>();
logger.Setup(l => l.Error(It.IsAny <Exception>(), It.IsAny <string>())).Verifiable();
var filename = @"http://example.com/my_imaginary_file.tif";
var defaultTileWidth = 512;
try
{
TiffExpander.GetMetadata(httpClient, logger.Object, new Uri(filename), defaultTileWidth, string.Empty);
}
catch (AggregateException ex)
{
logger.Verify(v => v.Error(It.IsAny <TaskCanceledException>(), "HTTP Request Cancelled"), Times.Once);
throw ex.InnerException;
}
}
public void Metadata()
{
var filename = Path.GetFullPath(@"test_image.tif");
var defaultTileWidth = 512;
var expectedWidth = 1000;
var expectedHeight = 1000;
var result = TiffExpander.GetMetadata(null, Log, new Uri(filename), defaultTileWidth, string.Empty);
Assert.IsNotNull(result);
Assert.AreEqual(defaultTileWidth, result.TileWidth, "Returned TileWidth does not match expected value");
Assert.AreEqual(0, result.TileHeight, "TileHeight should not be set");
Assert.AreEqual(expectedWidth, result.Width, "Expected Width does not match returned value");
Assert.AreEqual(expectedHeight, result.Height, "Expected Height does not match returned value");
Assert.AreEqual(6, result.ScalingLevels, "Returned ScalingLevels does not match expected value");
}
/// <summary>
/// Get Metadata fromt he source image, for info.json requests
/// </summary>
/// <param name="imageUri">The <see cref="Uri"/> of the source image</param>
/// <param name="defaultTileWidth">The default tile width (pixels) if the source image is not natively tiled</param>
/// <param name="requestId">The correlation ID to include on any subsequent HTTP requests</param>
/// <returns></returns>
public async Task <Metadata> GetMetadata(Uri imageUri, int defaultTileWidth, string requestId)
{
var sourceFormat = await Task.Run(() => GetSourceFormat(imageUri, requestId));
switch (sourceFormat)
{
case ImageFormat.jp2:
return(J2KExpander.GetMetadata(HttpClient, Log, imageUri, defaultTileWidth, requestId));
case ImageFormat.tif:
return(TiffExpander.GetMetadata(HttpClient, Log, imageUri, defaultTileWidth, requestId));
default:
throw new IOException("Unsupported source format");
}
}