From 95934d28391a08d7fae4a11f34c284f8937417e9 Mon Sep 17 00:00:00 2001
From: Andy Gocke <andy@commentout.net>
Date: Wed, 21 Jan 2026 13:31:21 -0800
Subject: [PATCH 1/6] Enable runtime async for all libraries test projects

---
 eng/testing/tests.targets | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/eng/testing/tests.targets b/eng/testing/tests.targets
index a3344312f1ce84..9059a86905bec6 100644
--- a/eng/testing/tests.targets
+++ b/eng/testing/tests.targets
@@ -1,4 +1,8 @@
 <Project>
+  <!-- Enable runtime async for all .NET 11+ test projects. -->
+  <PropertyGroup Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net11.0'))">
+    <Features>$(Features);runtime-async=on</Features>
+  </PropertyGroup>
   <PropertyGroup>
     <RunScriptWindowsCmd Condition="'$(OS)' == 'Windows_NT' and '$(RunScriptWindowsCmd)' == ''">true</RunScriptWindowsCmd>
     <RunScriptWindowsCmd Condition="'$(OS)' != 'Windows_NT' and '$(RunScriptWindowsCmd)' == ''">false</RunScriptWindowsCmd>
@@ -79,7 +83,7 @@
           Condition="'$(ArchiveTests)' == 'true' and '$(IgnoreForCI)' != 'true' and ('$(TargetsMobile)' != 'true' or '$(TargetOS)' == 'browser' or '$(TargetOS)' == 'wasi' or '$(BuildTestsOnHelix)' == 'true')"
           AfterTargets="$(ArchiveTestsAfterTargets)"
           DependsOnTargets="GenerateRunScript;ZipTestArchive" />
-  
+
   <Target Name="ZipTestArchive"
           Condition="'$(TargetsAppleMobile)' != 'true'">
     <Error Condition="'$(TestArchiveTestsDir)' == ''" Text="TestArchiveTestsDir property to archive the test folder must be set." />

From 5853c89d777a6ff7f86c9a068c02f6f642d590fb Mon Sep 17 00:00:00 2001
From: Andy Gocke <andy@commentout.net>
Date: Wed, 21 Jan 2026 15:26:26 -0800
Subject: [PATCH 2/6] Also enable preview features

---
 eng/testing/tests.targets | 1 +
 1 file changed, 1 insertion(+)

diff --git a/eng/testing/tests.targets b/eng/testing/tests.targets
index 9059a86905bec6..91f7b36d234272 100644
--- a/eng/testing/tests.targets
+++ b/eng/testing/tests.targets
@@ -1,6 +1,7 @@
 <Project>
   <!-- Enable runtime async for all .NET 11+ test projects. -->
   <PropertyGroup Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net11.0'))">
+    <EnablePreviewFeatures>true</EnablePreviewFeatures>
     <Features>$(Features);runtime-async=on</Features>
   </PropertyGroup>
   <PropertyGroup>

From 12ba43de1e7b8cb4588a922c8482d880f17c661a Mon Sep 17 00:00:00 2001
From: Andy Gocke <andy@commentout.net>
Date: Wed, 21 Jan 2026 19:26:48 -0800
Subject: [PATCH 3/6] Exclude NativeAOT and Mono

---
 eng/testing/tests.targets | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/eng/testing/tests.targets b/eng/testing/tests.targets
index 91f7b36d234272..1d9508227037a4 100644
--- a/eng/testing/tests.targets
+++ b/eng/testing/tests.targets
@@ -1,6 +1,8 @@
 <Project>
   <!-- Enable runtime async for all .NET 11+ test projects. -->
-  <PropertyGroup Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net11.0'))">
+  <PropertyGroup Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net11.0'))
+    and '$(TestNativeAot)' != 'true'
+    and '$(RuntimeFlavor)' != 'Mono'">
     <EnablePreviewFeatures>true</EnablePreviewFeatures>
     <Features>$(Features);runtime-async=on</Features>
   </PropertyGroup>

From c05bfd28c36a6d2223d6214cb89d73fe108b3965 Mon Sep 17 00:00:00 2001
From: Andy Gocke <angocke@microsoft.com>
Date: Wed, 21 Jan 2026 23:40:05 -0800
Subject: [PATCH 4/6] Also skip browser

---
 eng/testing/tests.targets | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/eng/testing/tests.targets b/eng/testing/tests.targets
index 1d9508227037a4..61d566ea2752fd 100644
--- a/eng/testing/tests.targets
+++ b/eng/testing/tests.targets
@@ -2,6 +2,9 @@
   <!-- Enable runtime async for all .NET 11+ test projects. -->
   <PropertyGroup Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net11.0'))
     and '$(TestNativeAot)' != 'true'
+    and '$(UseNativeAOTRuntime)' != 'true'
+    and '$(TargetOS)' != 'browser'
+    and '$(TargetOS)' != 'wasi'
     and '$(RuntimeFlavor)' != 'Mono'">
     <EnablePreviewFeatures>true</EnablePreviewFeatures>
     <Features>$(Features);runtime-async=on</Features>

From ca9c6a6fe563f41c3f7710de529c97209ce417f4 Mon Sep 17 00:00:00 2001
From: Andy Gocke <angocke@microsoft.com>
Date: Fri, 23 Jan 2026 15:24:03 -0800
Subject: [PATCH 5/6] Update eng/testing/tests.targets

Co-authored-by: Jackson Schuster <36744439+jtschuster@users.noreply.github.com>
---
 eng/testing/tests.targets | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/eng/testing/tests.targets b/eng/testing/tests.targets
index 61d566ea2752fd..55695dc881b624 100644
--- a/eng/testing/tests.targets
+++ b/eng/testing/tests.targets
@@ -5,7 +5,8 @@
     and '$(UseNativeAOTRuntime)' != 'true'
     and '$(TargetOS)' != 'browser'
     and '$(TargetOS)' != 'wasi'
-    and '$(RuntimeFlavor)' != 'Mono'">
+    and '$(RuntimeFlavor)' != 'Mono'
+    and '$(UseRuntimeAsync)' != 'false'">
     <EnablePreviewFeatures>true</EnablePreviewFeatures>
     <Features>$(Features);runtime-async=on</Features>
   </PropertyGroup>

From e11d2dd4644c51580dfbbc69f39bfca7fa12f84c Mon Sep 17 00:00:00 2001
From: Andy Gocke <angocke@microsoft.com>
Date: Sat, 24 Jan 2026 00:35:13 -0800
Subject: [PATCH 6/6] Update eng/testing/tests.targets

Co-authored-by: Jackson Schuster <36744439+jtschuster@users.noreply.github.com>
---
 eng/testing/tests.targets | 1 +
 1 file changed, 1 insertion(+)

diff --git a/eng/testing/tests.targets b/eng/testing/tests.targets
index 55695dc881b624..8c058abf2b7990 100644
--- a/eng/testing/tests.targets
+++ b/eng/testing/tests.targets
@@ -2,6 +2,7 @@
   <!-- Enable runtime async for all .NET 11+ test projects. -->
   <PropertyGroup Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net11.0'))
     and '$(TestNativeAot)' != 'true'
+    and '$(TestReadyToRun)' != 'true'
     and '$(UseNativeAOTRuntime)' != 'true'
     and '$(TargetOS)' != 'browser'
     and '$(TargetOS)' != 'wasi'