From 1541fc31ead99a358c649e7e9fa203e0dd4d20a5 Mon Sep 17 00:00:00 2001
From: Larry Ewing <lewing@microsoft.com>
Date: Fri, 14 Apr 2023 11:52:46 -0500
Subject: [PATCH] Check for null Path (#4391)

---
 .../Hosting/DotnetTestHostManager.cs                         | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/Microsoft.TestPlatform.TestHostProvider/Hosting/DotnetTestHostManager.cs b/src/Microsoft.TestPlatform.TestHostProvider/Hosting/DotnetTestHostManager.cs
index 2957410eac..02dad4370a 100644
--- a/src/Microsoft.TestPlatform.TestHostProvider/Hosting/DotnetTestHostManager.cs
+++ b/src/Microsoft.TestPlatform.TestHostProvider/Hosting/DotnetTestHostManager.cs
@@ -777,7 +777,10 @@ private string GetTestHostPath(string runtimeConfigDevPath, string depsFilePath,
                             }
                         }
 
-                        testHostPath = Path.Combine(testhostPackage.Path, testHostPath);
+                        if (testhostPackage.Path is not null)
+                        {
+                            testHostPath = Path.Combine(testhostPackage.Path, testHostPath);
+                        }
                         _hostPackageVersion = testhostPackage.Version;
                         IsVersionCheckRequired = !_hostPackageVersion.StartsWith("15.0.0");
                         EqtTrace.Verbose("DotnetTestHostmanager: Relative path of testhost.dll with respect to package folder is {0}", testHostPath);