public async Task ImageControllerDownloadImageStatusCodeOnStorageErrors(HttpStatusCode statusCode)
{
imageStoreMock.Setup(store => store.DownloadImage(_imageId))
.ThrowsAsync(new StorageErrorException("Test Exception", (int)statusCode));
ChatServiceException e = await Assert.ThrowsAsync <ChatServiceException>(() => chatServiceClient.DownloadImage(_imageId));
Assert.Equal(statusCode, e.StatusCode);
}