From 43ae480ffc8ed0095dd42d88ca801c20b33d8e5e Mon Sep 17 00:00:00 2001
From: Rick Anderson <3605364+Rick-Anderson@users.noreply.github.com>
Date: Thu, 25 Jun 2020 14:41:15 -1000
Subject: [PATCH] TestServer comes in a package (#18969)

---
 aspnetcore/test/middleware.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/aspnetcore/test/middleware.md b/aspnetcore/test/middleware.md
index 25bfafbec6..fc845b7e60 100644
--- a/aspnetcore/test/middleware.md
+++ b/aspnetcore/test/middleware.md
@@ -30,6 +30,14 @@ In the test project, create a test:
 
 * Build and start a host that uses <xref:Microsoft.AspNetCore.TestHost.TestServer>.
 * Add any required services that the middleware uses.
+* Add the [Microsoft.AspNetCore.TestHost](https://www.nuget.org/packages/Microsoft.AspNetCore.TestHost/) NuGet package to the project:
+  
+  ```dotnetcli
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="3.1.*" />
+  </ItemGroup>
+  ```
+
 * Configure the processing pipeline to use the middleware for the test.
 
 [!code-csharp[](middleware/samples_snapshot/3.x/setup.cs?highlight=4-18)]