From 06c0636d20aaadac9c2a1b423a21ea8b91693f43 Mon Sep 17 00:00:00 2001
From: Radek Doulik <radek.doulik@gmail.com>
Date: Fri, 20 Mar 2026 10:53:21 +0100
Subject: [PATCH 1/3] [wasm][coreclr] Enable more libraries tests

---
 eng/testing/tests.wasm.targets     |  1 +
 src/libraries/sendtohelixhelp.proj |  1 +
 src/libraries/tests.proj           | 69 ++++++------------------------
 3 files changed, 14 insertions(+), 57 deletions(-)

diff --git a/eng/testing/tests.wasm.targets b/eng/testing/tests.wasm.targets
index ba5df32aeb89a5..6195a9f0dca2d5 100644
--- a/eng/testing/tests.wasm.targets
+++ b/eng/testing/tests.wasm.targets
@@ -35,6 +35,7 @@
     <_ShellCommandSeparator Condition="'$(OS)' == 'Windows_NT'">&amp;&amp;</_ShellCommandSeparator>
     <_ShellCommandSeparator Condition="'$(OS)' != 'Windows_NT'">&amp;&amp;</_ShellCommandSeparator>
     <XUnitUseRandomizedTestOrderer Condition="'$(XUnitUseRandomizedTestOrderer)' == '' and '$(IsTestProject)' == 'true'">true</XUnitUseRandomizedTestOrderer>
+    <WasmXHarnessTestsTimeout Condition="'$(WasmXHarnessTestsTimeout)' == '' and '$(RuntimeFlavor)' == 'CoreCLR'">02:00:00</WasmXHarnessTestsTimeout>
     <WasmXHarnessTestsTimeout Condition="'$(WasmXHarnessTestsTimeout)' == ''">00:30:00</WasmXHarnessTestsTimeout>
     <RunWorkingDirectory>$(BundleDir)</RunWorkingDirectory>
 
diff --git a/src/libraries/sendtohelixhelp.proj b/src/libraries/sendtohelixhelp.proj
index 227089afe3c784..3e177aff3aaef8 100644
--- a/src/libraries/sendtohelixhelp.proj
+++ b/src/libraries/sendtohelixhelp.proj
@@ -39,6 +39,7 @@
         '$(Scenario)' == 'gcstress0xc_jitminopts_heapverify1'">06:00:00</_workItemTimeout>
     <_workItemTimeout Condition="'$(_workItemTimeout)' == '' and '$(TargetsAppleMobile)' == 'true'">01:15:00</_workItemTimeout>
     <_workItemTimeout Condition="'$(_workItemTimeout)' == '' and '$(TargetOS)' == 'android'">00:30:00</_workItemTimeout>
+    <_workItemTimeout Condition="'$(_workItemTimeout)' == '' and '$(TargetOS)' == 'browser' and '$(RuntimeFlavor)' == 'CoreCLR'">02:00:00</_workItemTimeout>
     <_workItemTimeout Condition="'$(_workItemTimeout)' == '' and '$(TargetOS)' == 'browser'">00:30:00</_workItemTimeout>
     <_workItemTimeout Condition="'$(_workItemTimeout)' == '' and '$(TargetOS)' == 'wasi'">00:30:00</_workItemTimeout>
     <_workItemTimeout Condition="'$(Scenario)' == '' and '$(_workItemTimeout)' == '' and ('$(TargetArchitecture)' == 'arm64' or '$(TargetArchitecture)' == 'arm')">00:45:00</_workItemTimeout>
diff --git a/src/libraries/tests.proj b/src/libraries/tests.proj
index d934ee6238bf07..e6500142156fdc 100644
--- a/src/libraries/tests.proj
+++ b/src/libraries/tests.proj
@@ -193,76 +193,31 @@
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Diagnostics.StackTrace\tests\System.Diagnostics.StackTrace.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime\tests\System.Reflection.Tests\System.Reflection.Tests.csproj" />
     <!-- crashes -->
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Bcl.AsyncInterfaces\tests\Microsoft.Bcl.AsyncInterfaces.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Bcl.Numerics\tests\Microsoft.Bcl.Numerics.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.CSharp\tests\Microsoft.CSharp.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Extensions.Configuration.Binder\tests\UnitTests\Microsoft.Extensions.Configuration.Binder.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Extensions.Configuration.FileExtensions\tests\Microsoft.Extensions.Configuration.FileExtensions.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Extensions.Configuration\tests\Microsoft.Extensions.Configuration.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Extensions.DependencyInjection\tests\DI.Tests\Microsoft.Extensions.DependencyInjection.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Extensions.FileProviders.Composite\tests\Microsoft.Extensions.FileProviders.Composite.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Extensions.FileProviders.Physical\tests\Microsoft.Extensions.FileProviders.Physical.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Extensions.Http\tests\Microsoft.Extensions.Http.Tests\Microsoft.Extensions.Http.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Extensions.Logging.Abstractions\tests\Microsoft.Extensions.Logging.Generators.Tests\Microsoft.Extensions.Logging.Generators.Roslyn3.11.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Extensions.Logging.Abstractions\tests\Microsoft.Extensions.Logging.Generators.Tests\Microsoft.Extensions.Logging.Generators.Roslyn4.0.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Extensions.Logging.Abstractions\tests\Microsoft.Extensions.Logging.Generators.Tests\Microsoft.Extensions.Logging.Generators.Roslyn4.8.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Extensions.Logging\tests\Common\Microsoft.Extensions.Logging.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Extensions.Primitives\tests\Microsoft.Extensions.Primitives.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.VisualBasic.Core\tests\Microsoft.VisualBasic.Core.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Collections.Immutable\tests\System.Collections.Immutable.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Collections.NonGeneric\tests\System.Collections.NonGeneric.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Collections\tests\System.Collections.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.ComponentModel.TypeConverter\tests\System.ComponentModel.TypeConverter.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Data.Common\tests\System.Data.Common.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Drawing.Primitives\tests\System.Drawing.Primitives.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Formats.Asn1\tests\System.Formats.Asn1.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Formats.Cbor\tests\System.Formats.Cbor.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.IO.Compression.ZipFile\tests\System.IO.Compression.ZipFile.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.IO.Pipelines\tests\System.IO.Pipelines.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Linq.AsyncEnumerable\tests\System.Linq.AsyncEnumerable.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Linq.Expressions\tests\System.Linq.Expressions.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Linq.Parallel\tests\System.Linq.Parallel.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Linq.Queryable\tests\System.Linq.Queryable.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Linq\tests\System.Linq.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Memory\tests\System.Memory.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Net.Http\tests\UnitTests\System.Net.Http.Unit.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Net.ServerSentEvents\tests\System.Net.ServerSentEvents.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Net.WebSockets\tests\System.Net.WebSockets.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Numerics.Vectors\tests\System.Numerics.Vectors.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.ObjectModel\tests\System.ObjectModel.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Private.Xml.Linq\tests\events\System.Xml.Linq.Events.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Private.Xml\tests\System.Private.Xml.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Private.Xml\tests\XmlSerializer\ReflectionOnly\System.Xml.XmlSerializer.ReflectionOnly.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Reflection.DispatchProxy\tests\System.Reflection.DispatchProxy.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Reflection.Emit.ILGeneration\tests\System.Reflection.Emit.ILGeneration.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.InteropServices\tests\System.Runtime.InteropServices.UnitTests\System.Runtime.InteropServices.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.Intrinsics\tests\System.Runtime.Intrinsics.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.Serialization.Json\tests\ReflectionOnly\System.Runtime.Serialization.Json.ReflectionOnly.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.Serialization.Json\tests\System.Runtime.Serialization.Json.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.Serialization.Schema\tests\System.Runtime.Serialization.Schema.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.Serialization.Xml\tests\Canonicalization\System.Runtime.Serialization.Xml.Canonicalization.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.Serialization.Xml\tests\ReflectionOnly\System.Runtime.Serialization.Xml.ReflectionOnly.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.Serialization.Xml\tests\System.Runtime.Serialization.Xml.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime\tests\System.Dynamic.Runtime.Tests\System.Dynamic.Runtime.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime\tests\System.IO.Tests\System.IO.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime\tests\System.Runtime.Extensions.Tests\System.Runtime.Extensions.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime\tests\System.Runtime.Tests\System.Runtime.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime\tests\System.Runtime.Tests\System\Reflection\InvokeEmit\System.Runtime.ReflectionInvokeEmit.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime\tests\System.Runtime.Tests\System\Reflection\InvokeInterpreted\System.Runtime.ReflectionInvokeInterpreted.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime\tests\System.Threading.Tasks.Extensions.Tests\System.Threading.Tasks.Extensions.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Security.Cryptography\tests\System.Security.Cryptography.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.ServiceModel.Syndication\tests\System.ServiceModel.Syndication.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Text.Json\tests\System.Text.Json.SourceGeneration.Tests\System.Text.Json.SourceGeneration.Roslyn4.4.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Threading.Channels\tests\System.Threading.Channels.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Threading.Tasks.Dataflow\tests\System.Threading.Tasks.Dataflow.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Threading.Thread\tests\System.Threading.Thread.Tests.csproj" />
     <!-- test failures -->
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Extensions.Logging.Abstractions\tests\Microsoft.Extensions.Logging.Generators.Tests\Microsoft.Extensions.Logging.Generators.Roslyn4.8.Tests.csproj" />
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Collections\tests\System.Collections.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Collections.Concurrent\tests\System.Collections.Concurrent.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.ComponentModel.EventBasedAsync\tests\System.ComponentModel.EventBasedAsync.Tests.csproj" />
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Data.Common\tests\System.Data.Common.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Diagnostics.Tracing\tests\System.Diagnostics.Tracing.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Formats.Nrbf\tests\System.Formats.Nrbf.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Net.Requests\tests\ServicePointTests\System.Net.ServicePoint.Tests.csproj" />
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Reflection.DispatchProxy\tests\System.Reflection.DispatchProxy.Tests.csproj" />
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.InteropServices\tests\System.Runtime.InteropServices.UnitTests\System.Runtime.InteropServices.Tests.csproj" />
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.Intrinsics\tests\System.Runtime.Intrinsics.Tests.csproj" />
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime\tests\System.Dynamic.Runtime.Tests\System.Dynamic.Runtime.Tests.csproj" />
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime\tests\System.Runtime.Extensions.Tests\System.Runtime.Extensions.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Threading.Overlapped\tests\System.Threading.Overlapped.Tests.csproj" />
+    <!-- these run for too long -->
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Linq\tests\System.Linq.Tests.csproj" />
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Memory\tests\System.Memory.Tests.csproj" />
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Private.Xml\tests\System.Private.Xml.Tests.csproj" />
     <!-- timeout (>30 min) -->
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Private.Uri\tests\FunctionalTests\System.Private.Uri.Functional.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.Numerics\tests\System.Runtime.Numerics.Tests.csproj" />

From 972da062155f046d31669918451b7d4b36c84dd4 Mon Sep 17 00:00:00 2001
From: Radek Doulik <radek.doulik@gmail.com>
Date: Sat, 21 Mar 2026 13:16:03 +0100
Subject: [PATCH 2/3] Feedback + update timeouts

---
 eng/testing/tests.wasm.targets     |  2 +-
 src/libraries/sendtohelixhelp.proj |  2 +-
 src/libraries/tests.proj           | 12 ++++--------
 3 files changed, 6 insertions(+), 10 deletions(-)

diff --git a/eng/testing/tests.wasm.targets b/eng/testing/tests.wasm.targets
index 6195a9f0dca2d5..8bf322e1e8bb9d 100644
--- a/eng/testing/tests.wasm.targets
+++ b/eng/testing/tests.wasm.targets
@@ -35,7 +35,7 @@
     <_ShellCommandSeparator Condition="'$(OS)' == 'Windows_NT'">&amp;&amp;</_ShellCommandSeparator>
     <_ShellCommandSeparator Condition="'$(OS)' != 'Windows_NT'">&amp;&amp;</_ShellCommandSeparator>
     <XUnitUseRandomizedTestOrderer Condition="'$(XUnitUseRandomizedTestOrderer)' == '' and '$(IsTestProject)' == 'true'">true</XUnitUseRandomizedTestOrderer>
-    <WasmXHarnessTestsTimeout Condition="'$(WasmXHarnessTestsTimeout)' == '' and '$(RuntimeFlavor)' == 'CoreCLR'">02:00:00</WasmXHarnessTestsTimeout>
+    <WasmXHarnessTestsTimeout Condition="'$(WasmXHarnessTestsTimeout)' == '' and '$(RuntimeFlavor)' == 'CoreCLR'">01:30:00</WasmXHarnessTestsTimeout>
     <WasmXHarnessTestsTimeout Condition="'$(WasmXHarnessTestsTimeout)' == ''">00:30:00</WasmXHarnessTestsTimeout>
     <RunWorkingDirectory>$(BundleDir)</RunWorkingDirectory>
 
diff --git a/src/libraries/sendtohelixhelp.proj b/src/libraries/sendtohelixhelp.proj
index 3e177aff3aaef8..5b7d08b155b1c7 100644
--- a/src/libraries/sendtohelixhelp.proj
+++ b/src/libraries/sendtohelixhelp.proj
@@ -39,7 +39,7 @@
         '$(Scenario)' == 'gcstress0xc_jitminopts_heapverify1'">06:00:00</_workItemTimeout>
     <_workItemTimeout Condition="'$(_workItemTimeout)' == '' and '$(TargetsAppleMobile)' == 'true'">01:15:00</_workItemTimeout>
     <_workItemTimeout Condition="'$(_workItemTimeout)' == '' and '$(TargetOS)' == 'android'">00:30:00</_workItemTimeout>
-    <_workItemTimeout Condition="'$(_workItemTimeout)' == '' and '$(TargetOS)' == 'browser' and '$(RuntimeFlavor)' == 'CoreCLR'">02:00:00</_workItemTimeout>
+    <_workItemTimeout Condition="'$(_workItemTimeout)' == '' and '$(TargetOS)' == 'browser' and '$(RuntimeFlavor)' == 'CoreCLR'">01:30:00</_workItemTimeout>
     <_workItemTimeout Condition="'$(_workItemTimeout)' == '' and '$(TargetOS)' == 'browser'">00:30:00</_workItemTimeout>
     <_workItemTimeout Condition="'$(_workItemTimeout)' == '' and '$(TargetOS)' == 'wasi'">00:30:00</_workItemTimeout>
     <_workItemTimeout Condition="'$(Scenario)' == '' and '$(_workItemTimeout)' == '' and ('$(TargetArchitecture)' == 'arm64' or '$(TargetArchitecture)' == 'arm')">00:45:00</_workItemTimeout>
diff --git a/src/libraries/tests.proj b/src/libraries/tests.proj
index e6500142156fdc..b697dcb0a5c061 100644
--- a/src/libraries/tests.proj
+++ b/src/libraries/tests.proj
@@ -185,7 +185,7 @@
 
   <!-- https://github.com/dotnet/runtime/issues/125495 - These tests are disabled on browser/CoreCLR because of build errors and test failures. -->
   <ItemGroup Condition="'$(TargetOS)' == 'browser' and '$(RuntimeFlavor)' == 'CoreCLR' and '$(RunDisabledWasmTests)' != 'true'">
-    <!-- build errors -->
+    <!-- build errors, WasmTriggerPublishApp for CoreCLR not implemented -->
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime\tests\System.IO.FileSystem.Tests\System.IO.FileSystem.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Reflection.MetadataLoadContext\tests\System.Reflection.MetadataLoadContext.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Reflection.Metadata\tests\System.Reflection.Metadata.Tests.csproj" />
@@ -197,10 +197,10 @@
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Extensions.Http\tests\Microsoft.Extensions.Http.Tests\Microsoft.Extensions.Http.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.VisualBasic.Core\tests\Microsoft.VisualBasic.Core.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.IO.Compression.ZipFile\tests\System.IO.Compression.ZipFile.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Linq.Expressions\tests\System.Linq.Expressions.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Threading.Thread\tests\System.Threading.Thread.Tests.csproj" />
     <!-- test failures -->
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)Microsoft.Extensions.Logging.Abstractions\tests\Microsoft.Extensions.Logging.Generators.Tests\Microsoft.Extensions.Logging.Generators.Roslyn4.8.Tests.csproj" />
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Linq.Expressions\tests\System.Linq.Expressions.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Collections\tests\System.Collections.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Collections.Concurrent\tests\System.Collections.Concurrent.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.ComponentModel.EventBasedAsync\tests\System.ComponentModel.EventBasedAsync.Tests.csproj" />
@@ -214,16 +214,12 @@
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime\tests\System.Dynamic.Runtime.Tests\System.Dynamic.Runtime.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime\tests\System.Runtime.Extensions.Tests\System.Runtime.Extensions.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Threading.Overlapped\tests\System.Threading.Overlapped.Tests.csproj" />
-    <!-- these run for too long -->
+    <!-- long running suites -->
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Linq\tests\System.Linq.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Memory\tests\System.Memory.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Private.Xml\tests\System.Private.Xml.Tests.csproj" />
-    <!-- timeout (>30 min) -->
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Private.Uri\tests\FunctionalTests\System.Private.Uri.Functional.Tests.csproj" />
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Private.Xml\tests\System.Private.Xml.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.Numerics\tests\System.Runtime.Numerics.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Text.Encodings.Web\tests\System.Text.Encodings.Web.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Text.Json\tests\System.Text.Json.Tests\System.Text.Json.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Text.RegularExpressions\tests\FunctionalTests\System.Text.RegularExpressions.Tests.csproj" />
   </ItemGroup>
 
   <ItemGroup Condition="('$(TargetOS)' == 'android' or '$(TargetsLinuxBionic)' == 'true') and '$(RunDisabledAndroidTests)' != 'true'">

From e053f2e32f6652591ad7807edf009dcda4430e00 Mon Sep 17 00:00:00 2001
From: Radek Doulik <radek.doulik@gmail.com>
Date: Sat, 21 Mar 2026 18:50:02 +0100
Subject: [PATCH 3/3] Add missed exclusion

---
 src/libraries/tests.proj | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libraries/tests.proj b/src/libraries/tests.proj
index b697dcb0a5c061..8c349ead000ca3 100644
--- a/src/libraries/tests.proj
+++ b/src/libraries/tests.proj
@@ -220,6 +220,7 @@
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Private.Uri\tests\FunctionalTests\System.Private.Uri.Functional.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Private.Xml\tests\System.Private.Xml.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.Numerics\tests\System.Runtime.Numerics.Tests.csproj" />
+    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Text.Json\tests\System.Text.Json.Tests\System.Text.Json.Tests.csproj" />
   </ItemGroup>
 
   <ItemGroup Condition="('$(TargetOS)' == 'android' or '$(TargetsLinuxBionic)' == 'true') and '$(RunDisabledAndroidTests)' != 'true'">