From e0f0845e4dc05a09fc90e9a2dbc03253cd44ccf5 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 16 Jul 2026 17:27:11 +0000
Subject: [PATCH 1/3] Initial plan


From e22540ce0d6a53677d9b3312a24d5f7136a3f270 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 16 Jul 2026 17:33:41 +0000
Subject: [PATCH 2/3] Fix .NET Framework build by excluding TrimmingTests from
 netfx compilation

Co-authored-by: svick <287848+svick@users.noreply.github.com>
---
 .../tests/Microsoft.Extensions.Caching.Abstractions.Tests.csproj | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libraries/Microsoft.Extensions.Caching.Abstractions/tests/Microsoft.Extensions.Caching.Abstractions.Tests.csproj b/src/libraries/Microsoft.Extensions.Caching.Abstractions/tests/Microsoft.Extensions.Caching.Abstractions.Tests.csproj
index 897dba6387fdc2..fde5f002fc98a5 100644
--- a/src/libraries/Microsoft.Extensions.Caching.Abstractions/tests/Microsoft.Extensions.Caching.Abstractions.Tests.csproj
+++ b/src/libraries/Microsoft.Extensions.Caching.Abstractions/tests/Microsoft.Extensions.Caching.Abstractions.Tests.csproj
@@ -8,6 +8,7 @@
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework'">
     <ProjectReference Include="..\src\Microsoft.Extensions.Caching.Abstractions.csproj" />
     <Compile Include="$(CoreLibSharedDir)System\Runtime\CompilerServices\IsExternalInit.cs" Link="Common\System\Runtime\CompilerServices\IsExternalInit.cs" />
+    <Compile Remove="TrimmingTests\**" />
   </ItemGroup>
 
 </Project>

From 393540ba8ec822361aa95fa3a4492aadb31f2da3 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 16 Jul 2026 18:41:22 +0000
Subject: [PATCH 3/3] Make TrimmingTests Compile Remove unconditional (not just
 .NETFramework)

Co-authored-by: svick <287848+svick@users.noreply.github.com>
---
 .../Microsoft.Extensions.Caching.Abstractions.Tests.csproj  | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/libraries/Microsoft.Extensions.Caching.Abstractions/tests/Microsoft.Extensions.Caching.Abstractions.Tests.csproj b/src/libraries/Microsoft.Extensions.Caching.Abstractions/tests/Microsoft.Extensions.Caching.Abstractions.Tests.csproj
index fde5f002fc98a5..4d094f0cb00d21 100644
--- a/src/libraries/Microsoft.Extensions.Caching.Abstractions/tests/Microsoft.Extensions.Caching.Abstractions.Tests.csproj
+++ b/src/libraries/Microsoft.Extensions.Caching.Abstractions/tests/Microsoft.Extensions.Caching.Abstractions.Tests.csproj
@@ -5,10 +5,14 @@
     <EnableDefaultItems>true</EnableDefaultItems>
   </PropertyGroup>
 
+  <ItemGroup>
+    <!-- TrimmingTests are standalone console apps built by their own .TrimmingTests.proj, not part of the xunit test assembly. -->
+    <Compile Remove="TrimmingTests\**" />
+  </ItemGroup>
+
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework'">
     <ProjectReference Include="..\src\Microsoft.Extensions.Caching.Abstractions.csproj" />
     <Compile Include="$(CoreLibSharedDir)System\Runtime\CompilerServices\IsExternalInit.cs" Link="Common\System\Runtime\CompilerServices\IsExternalInit.cs" />
-    <Compile Remove="TrimmingTests\**" />
   </ItemGroup>
 
 </Project>