SubtitleEdit: Check embedded dictionary status

using System;
using System.Diagnostics;
using System.IO.Compression;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;
using System.Xml.Linq;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Nikse.SubtitleEdit;

namespace Test.Dictionaries
{
    [TestClass]
    public class HunspellDictionaryTest
    {
        [TestMethod]
        public async Task DictionaryStatusTest()
        {
            var assembly = typeof(Program).Assembly;

            using (var gzipStream = assembly.GetManifestResourceStream("Nikse.SubtitleEdit.Resources.HunspellDictionaries.xml.gz"))
            using (var gzip = new GZipStream(gzipStream, CompressionMode.Decompress))
            using (var httpClient = new HttpClient { Timeout = TimeSpan.FromSeconds(3) })
            {
                // todo: add httpclient header, some sites might drop the request if some header is not provided
                var doc = XDocument.Load(gzip);

                foreach (var dictionaryEl in doc.Root.Elements("Dictionary"))
                {
                    string name = dictionaryEl.Element("EnglishName").Value;
                    Debug.WriteLine($"Processing document: {name}");
                    var url = dictionaryEl.Element("DownloadLink").Value;
                    try
                    {
                        var response = await httpClient.SendAsync(new HttpRequestMessage(HttpMethod.Get, url),
                            HttpCompletionOption.ResponseHeadersRead).ConfigureAwait(false);
                        Assert.AreEqual(HttpStatusCode.OK, response.StatusCode, $"{name} is not available!");
                    }
                    catch (Exception e)
                    {
                        Debug.WriteLine($"Failed to get response: {name}: {e.Message}");
                    }
                    await Task.Delay(500).ConfigureAwait(false);
                }
            }
        }
    }
}