Remove TestProjectHelpers from Server.IntegrationTesting

src/Microsoft.AspNetCore.Server.IntegrationTesting/xunit/TestProjectHelpers.cs

@@ -1,33 +0,0 @@
-// Copyright (c) .NET Foundation. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
-
-using System;
-using System.IO;
-
-namespace Microsoft.AspNetCore.Server.IntegrationTesting.xunit
-{
-    public class TestProjectHelpers
-    {
-        private const string SolutionName = "Hosting.sln";
-
-        public static string GetSolutionRoot()
-        {
-            var applicationBasePath = AppContext.BaseDirectory;
-
-            var directoryInfo = new DirectoryInfo(applicationBasePath);
-            do
-            {
-                var projectFileInfo = new FileInfo(Path.Combine(directoryInfo.FullName, SolutionName));
-                if (projectFileInfo.Exists)
-                {
-                    return projectFileInfo.DirectoryName;
-                }
-
-                directoryInfo = directoryInfo.Parent;
-            }
-            while (directoryInfo.Parent != null);
-
-            throw new Exception($"Solution file {SolutionName} could not be found using {applicationBasePath}");
-        }
-    }
-}

test/Microsoft.AspNetCore.Hosting.FunctionalTests/Microsoft.AspNetCore.Hosting.FunctionalTests.csproj

@@ -17,6 +17,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Testing" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="$(TestSdkVersion)" />
     <PackageReference Include="xunit.runner.visualstudio" Version="$(XunitVersion)" />

test/Microsoft.AspNetCore.Hosting.FunctionalTests/ShutdownTests.cs

@@ -5,7 +5,7 @@ using System.Diagnostics;
 using System.IO;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Server.IntegrationTesting;
-using Microsoft.AspNetCore.Server.IntegrationTesting.xunit;
+using Microsoft.AspNetCore.Testing;
 using Microsoft.AspNetCore.Testing.xunit;
 using Microsoft.Extensions.Logging.Testing;
 using Xunit;
@@ -28,7 +28,7 @@ namespace Microsoft.AspNetCore.Hosting.FunctionalTests
             {
                 var logger = loggerFactory.CreateLogger(nameof(ShutdownTest));
 
-                var applicationPath = Path.Combine(TestProjectHelpers.GetSolutionRoot(), "test",
+                var applicationPath = Path.Combine(TestPathUtilities.GetSolutionRootDirectory("Hosting"), "test",
                     "Microsoft.AspNetCore.Hosting.TestSites");
 
                 var deploymentParameters = new DeploymentParameters(