Test new WithDownload

Author: FlorianRappl

src/AngleSharp.Io.Tests/Integration/DownloadTest.cs

@@ -0,0 +1,57 @@
+namespace AngleSharp.Io.Tests.Integration
+{
+    using AngleSharp.Dom;
+    using AngleSharp.Html.Dom;
+    using NUnit.Framework;
+    using System.Threading.Tasks;
+
+    [TestFixture]
+    public class DownloadTest
+    {
+        [Test]
+        public async Task DownloadPngIfWanted()
+        {
+            var downloadSeen = false;
+            var config = Configuration.Default.WithDownload((type, response) =>
+            {
+                if (type == new MimeType(MimeTypeNames.Png))
+                {
+                    downloadSeen = true;
+                    return true;
+                }
+
+                return false;
+            });
+            var context = BrowsingContext.New(config);
+            var document = await context.OpenAsync(req => req.Content("<a href=foo.png>Go to some image</a>"));
+            var linkedDocument = await document.QuerySelector<IHtmlAnchorElement>("a").NavigateAsync();
+
+            Assert.IsTrue(downloadSeen);
+            Assert.IsNull(linkedDocument);
+            Assert.AreEqual(document, context.Active);
+        }
+
+        [Test]
+        public async Task DownloadBinaryNotReceived()
+        {
+            var downloadSeen = false;
+            var config = Configuration.Default.WithDownload((type, response) =>
+            {
+                if (type == new MimeType(MimeTypeNames.Binary))
+                {
+                    downloadSeen = true;
+                    return true;
+                }
+
+                return false;
+            });
+            var context = BrowsingContext.New(config);
+            var document = await context.OpenAsync(req => req.Content("<a href=foo.png>Go to some image</a>"));
+            var linkedDocument = await document.QuerySelector<IHtmlAnchorElement>("a").NavigateAsync();
+
+            Assert.IsFalse(downloadSeen);
+            Assert.IsNotNull(linkedDocument);
+            Assert.AreNotEqual(document, context.Active);
+        }
+    }
+}

src/AngleSharp.Io/Network/DownloadFactory.cs

@@ -20,7 +20,7 @@ protected override Task<IDocument> CreateDefaultAsync(IBrowsingContext context,
         {
             if (_download(options.ContentType, options.Response))
             {
-                return context.OpenNewAsync(options.Response.Address.Href, cancellationToken);
+                return Task.FromResult<IDocument>(null);
             }
 
             return _documentFactory.CreateAsync(context, options, cancellationToken);