diff --git a/Testing/Acceptance/Modules/IO/VirtualTreeTests.cs b/Testing/Acceptance/Modules/IO/VirtualTreeTests.cs
index 20c49ce5..657f348e 100644
--- a/Testing/Acceptance/Modules/IO/VirtualTreeTests.cs
+++ b/Testing/Acceptance/Modules/IO/VirtualTreeTests.cs
@@ -1,53 +1,73 @@
-using System.Threading.Tasks;
-
-using GenHTTP.Api.Content.IO;
-using GenHTTP.Api.Routing;
-
-using GenHTTP.Modules.IO;
-
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-
-namespace GenHTTP.Testing.Acceptance.Modules.IO
-{
-
-    [TestClass]
-    public sealed class VirtualTreeTests
-    {
-
-        [TestMethod]
-        public async Task TestNestedTree()
-        {
-            var tree = ResourceTree.FromAssembly("Resources");
-
-            var virt = VirtualTree.Create()
-                                  .Add("r", tree)
-                                  .Build();
-
-            var (node, file) = await virt.Find(GetTarget("/r/File.txt"));
-
-            Assert.IsNotNull(node);
-            Assert.IsNotNull(file);
-
-            Assert.IsTrue((node as IResourceNode)?.Parent == virt);
-
-            Assert.IsNotNull(virt.Modified);
-        }
-
-        [TestMethod]
-        public async Task TestResource()
-        {
-            var virt = VirtualTree.Create()
-                                  .Add("res.txt", Resource.FromString("Blubb"))
-                                  .Build();
-
-            var (node, file) = await virt.Find(GetTarget("/res.txt"));
-
-            Assert.IsNotNull(node);
-            Assert.IsNotNull(file);
-        }
-
-        private static RoutingTarget GetTarget(string path) => new(new PathBuilder(path).Build());
-
-    }
-
-}
+using System.Net;
+using System.Threading.Tasks;
+
+using GenHTTP.Api.Content.IO;
+using GenHTTP.Api.Routing;
+
+using GenHTTP.Modules.DirectoryBrowsing;
+using GenHTTP.Modules.IO;
+
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace GenHTTP.Testing.Acceptance.Modules.IO
+{
+
+    [TestClass]
+    public sealed class VirtualTreeTests
+    {
+
+        [TestMethod]
+        public async Task TestNestedTree()
+        {
+            var tree = ResourceTree.FromAssembly("Resources");
+
+            var virt = VirtualTree.Create()
+                                  .Add("r", tree)
+                                  .Build();
+
+            var (node, file) = await virt.Find(GetTarget("/r/File.txt"));
+
+            Assert.IsNotNull(node);
+            Assert.IsNotNull(file);
+
+            Assert.IsTrue((node as IResourceNode)?.Parent == virt);
+
+            Assert.IsNotNull(virt.Modified);
+        }
+
+        [TestMethod]
+        public async Task TestResource()
+        {
+            var virt = VirtualTree.Create()
+                                  .Add("res.txt", Resource.FromString("Blubb"))
+                                  .Build();
+
+            var (node, file) = await virt.Find(GetTarget("/res.txt"));
+
+            Assert.IsNotNull(node);
+            Assert.IsNotNull(file);
+        }
+
+        [TestMethod]
+        public async Task TestUsage()
+        {
+            var tree = ResourceTree.FromAssembly("Resources");
+
+            var virt = VirtualTree.Create()
+                                  .Add("r", tree)
+                                  .Add("res.txt", Resource.FromString("Blubb"));
+
+            var handler = Listing.From(virt);
+
+            using var host = TestHost.Run(handler);
+
+            using var response = await host.GetResponseAsync();
+
+            await response.AssertStatusAsync(HttpStatusCode.OK);
+        }
+
+        private static RoutingTarget GetTarget(string path) => new(new PathBuilder(path).Build());
+
+    }
+
+}