Migrate to xunit.v3 by Youssef1313 · Pull Request #13482 · dotnet/msbuild

Youssef1313 · 2026-04-01T20:15:14Z

No description provided.

rainersigwald · 2026-04-02T13:40:49Z

fyi I'm working on this in #13215, but won't be mad if you beat me to it. Chasing what looks like some Windows hangs at the moment, and as a low-pri background thing.

Youssef1313 · 2026-04-02T13:43:04Z

Oh, I didn't know you are already working on it.

Youssef1313 · 2026-04-02T19:56:54Z

@rainersigwald I tried to pull in some changes you did in the other PR here to see if it gets me here in a better state. We can sync next Tuesday to align the efforts.

Generally speaking, a big difference between the two PRs is that in this PR I'm running with MTP, while the other PR runs with VSTest. But I would think most test failures will be related to the xunit 2 to xunit 3 move and not VSTest/MTP differences. In addition, in this PR I'm keeping the tests wrapped in TestEnvironment.Create() and TestEnvironment.Dispose() to assert that the tests don't change env variables.

One thing to note is that xunit.v3 might be running the tests in a different order compared to xunit 2, which might (or might not) be the cause for some of the failures (i.e, some tests might have been modifying global state without resetting it - that was somehow unnoticed with xunit 2 but might become apparent now that the ordering changed)

rainersigwald · 2026-04-02T20:07:53Z

In addition, in this PR I'm keeping the tests wrapped in TestEnvironment.Create() and TestEnvironment.Dispose() to assert that the tests don't change env variables.

I believe this is not currently working--my interpretation of a bunch of failures in my attempt was "something is making this work now and failing a bunch of tests that should have been failing before but weren't". I'd love to have all those tests fixed of course . . .

Youssef1313 · 2026-04-02T20:09:13Z

In addition, in this PR I'm keeping the tests wrapped in TestEnvironment.Create() and TestEnvironment.Dispose() to assert that the tests don't change env variables.

I believe this is not currently working--my interpretation of a bunch of failures in my attempt was "something is making this work now and failing a bunch of tests that should have been failing before but weren't". I'd love to have all those tests fixed of course . . .

In the other PR, I commented on why the approach there won't work. But I think it might have been working on main already.

Youssef1313 · 2026-04-07T13:30:11Z

src/Build.UnitTests/BackEnd/DebugUtils_tests.cs

+            var exceptionFilesBefore =
+                Directory.Exists(DebugUtils.DebugDumpPath) ? Directory.GetFiles(DebugUtils.DebugDumpPath, "MSBuild_*failure.txt") : Array.Empty<string>();


For some unknown reason, sometimes the DebugDumpPath directory isn't there on disk, and then GetFiles throws an exception if the directory doesn't exist.

Maybe there is some other previous test that deletes DebugDumpPath or something. Anyways, it should be safe to keep this change. It just means that future refactoring for how tests work is ideal to avoid this kind of cross-test dependency issues.

Youssef1313 · 2026-04-07T13:32:47Z

src/Build.UnitTests/BackEnd/TaskHostFactory_Tests.cs

+        private static string AssemblyLocation { get; } =
+            typeof(TaskHostFactory_Tests).Assembly.Location
+            ?? Path.Combine(AppContext.BaseDirectory, "Microsoft.Build.Engine.UnitTests.dll");


NOTE 1: Under .NET Framework, the assembly is now the .exe which Assembly.Location will provide correctly.

NOTE 2: In the case of Assembly.Location being null (unlikely to happen for .NET Framework), we still use AppContext.BaseDirectory and then get the dll. If this ever happened for .NET Framework, we would need to add extra condition to either find .dll or .exe for .NET Framework. But so far Assembly.Location simply works just fine.

Youssef1313 · 2026-04-07T13:36:03Z

src/Build.UnitTests/ConsoleLogger_Tests.cs

+                ParallelConsoleLogger cl2 = new ParallelConsoleLogger(LoggerVerbosity.Minimal, sc.Write, null, null);
+                EventSourceSink es = new EventSourceSink();
+                cl2.Initialize(es);
+                cl2.Parameters = "ShowEnvironment";


NOTE: This line will lead to:

msbuild/src/Build/Logging/BaseConsoleLogger.cs

Line 994 in 932ab6a

Traits.LogAllEnvironmentVariables = true;

So, we ensure we get back the static state to its original value (should be false).

There is some other test that would fail if Traits.LogAllEnvironmentVariables is true (I don't recall which one now).

In current main, DisplayEnvironmentInMinimal is run after that test so everything kinda works fine.

With xunit.v3, the order changed and now DisplayEnvironmentInMinimal is run earlier, causing the other test to fail.

Pulling some changes from #13215

…auses some caches to be bad/unexpected for tests.

Copilot

Pull request overview

This PR migrates the repo’s unit test infrastructure from xUnit v2 patterns to xUnit v3, aligning execution with Microsoft.Testing.Platform and updating shared test bootstrapping so test environment initialization remains consistent across the suite.

Changes:

Switched test dependencies to xUnit v3 (and Verify.XunitV3), removed xUnit v2 console runner usage, and updated test runner/coverage configuration.
Replaced the custom xUnit v2 “AssemblyFixtureSupport” framework with xUnit v3 pipeline startup + a custom test framework wrapper to create TestEnvironment per test case.
Updated many test projects/files to remove Xunit.Abstractions usages and stabilize a few test-global/static state interactions.

Reviewed changes

Copilot reviewed 160 out of 160 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
src/Xunit.NetCore.Extensions/Xunit.NetCore.Extensions.csproj	Switch extension package reference to xUnit v3 extensibility core and adjust TFMs/settings.
src/Xunit.NetCore.Extensions/UseInvariantCultureAttribute.cs	Update `BeforeAfterTestAttribute` overrides to xUnit v3 signatures.
src/Xunit.NetCore.Extensions/AssemblyFixtureSupport/XunitTestMethodRunnerWithAssemblyFixture.cs	Removed legacy xUnit v2 assembly fixture runner implementation.
src/Xunit.NetCore.Extensions/AssemblyFixtureSupport/XunitTestFrameworkWithAssemblyFixture.cs	Removed legacy xUnit v2 custom test framework.
src/Xunit.NetCore.Extensions/AssemblyFixtureSupport/XunitTestFrameworkExecutorWithAssemblyFixture.cs	Removed legacy xUnit v2 executor wrapper.
src/Xunit.NetCore.Extensions/AssemblyFixtureSupport/XunitTestCollectionRunnerWithAssemblyFixture.cs	Removed legacy xUnit v2 collection runner wrapper.
src/Xunit.NetCore.Extensions/AssemblyFixtureSupport/XunitTestClassRunnerWithAssemblyFixture.cs	Removed legacy xUnit v2 class runner wrapper.
src/Xunit.NetCore.Extensions/AssemblyFixtureSupport/XunitTestAssemblyRunnerWithAssemblyFixture.cs	Removed legacy xUnit v2 assembly runner wrapper.
src/Xunit.NetCore.Extensions/AssemblyFixtureSupport/README.md	Removed docs for the deleted xUnit v2 assembly fixture support.
src/Xunit.NetCore.Extensions/AssemblyFixtureSupport/AssemblyFixtureAttribute.cs	Removed legacy assembly-level fixture attribute.
src/Utilities.UnitTests/ToolTask_Tests.cs	Remove xUnit v2 abstractions import.
src/Utilities.UnitTests/ToolLocationHelper_Tests.cs	Remove xUnit v2 abstractions import.
src/Utilities.UnitTests/ProcessExtensions_Tests.cs	Remove xUnit v2 abstractions import.
src/UnitTests.Shared/TestEnvironment.cs	Update default output helper implementation for xUnit v3 interface surface.
src/UnitTests.Shared/RunnerUtilities.cs	Update xUnit output helper import namespace.
src/UnitTests.Shared/ObjectModelHelpers.cs	Remove xUnit v2 abstractions import.
src/UnitTests.Shared/MockLogger.cs	Remove xUnit v2 abstractions import.
src/UnitTests.Shared/MockEngine.cs	Update xUnit output helper import namespace.
src/UnitTests.Shared/Microsoft.Build.UnitTests.Shared.csproj	Replace xUnit v2 packages with xUnit v3 assert/extensibility packages.
src/Tasks.UnitTests/XamlDataDrivenToolTask_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/WriteLinesToFile_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/VerifyFileHash_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/Unzip_Tests.cs	Replace conditional attribute usage with runtime skip under xUnit v3.
src/Tasks.UnitTests/TestResources/TestBinary.cs	Update xUnit-related imports.
src/Tasks.UnitTests/RoslynCodeTaskFactory_Tests.cs	Remove Verify-specific attribute usage.
src/Tasks.UnitTests/ResourceHandling/ResGenDependencies_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/ResourceHandling/MSBuildResXReader_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/ResourceHandling/GenerateResourceOutOfProc_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/ResourceHandling/GenerateResource_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/ResolveNonMSBuildProjectOutput_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/ResolveAssemblyReference_CustomCultureTests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/RemoveDir_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/RegressionTests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/PortableTasks_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/OutputPathTests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/MSBuildInternalMessage_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/MSBuild_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/Microsoft.Build.Tasks.UnitTests.csproj	Switch Verify package to xUnit v3 variant.
src/Tasks.UnitTests/HintPathResolver_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/GetSDKReference_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/GetFileHash_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/GetCompatiblePlatform_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/GetAssembliesMetadata_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/GenerateBindingRedirects_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/FormatUrl_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/Exec_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/CreateVisualBasicManifestResourceName_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/CreateItem_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/CreateCSharpManifestResourceName_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/Copy_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssignProjectConfiguration_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/WinMDTests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/VerifyTargetFrameworkHigherThanRedist.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/VerifyTargetFrameworkAttribute.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/VerifyIgnoreVersionForFrameworkReference.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/SuggestedRedirects.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/StronglyNamedDependencyAutoUnify.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/StronglyNamedDependencyAppConfig.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/StronglyNamedDependency.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/SpecificVersionPrimary.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/ResolveAssemblyReferenceTestFixture.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/ReferenceTests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/Perf.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/NonSpecificVersionStrictPrimary.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/Node/OutOfProcRarNode_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/Miscellaneous.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/InstalledSDKResolverFixture.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/GlobalAssemblyCacheTests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/FilePrimary.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AssemblyDependency/AssemblyFoldersFromConfig_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/Al_Tests.cs	Remove xUnit v2 abstractions import.
src/Tasks.UnitTests/AddToWin32Manifest_Tests.cs	Remove xUnit v2 abstractions import.
src/StringTools.UnitTests/StringTools.UnitTests.net35.csproj	Force OutputType Exe for net35 test project under new runner approach.
src/StringTools.UnitTests/InterningTestData.cs	Update xUnit-related imports.
src/Shared/UnitTests/xunit.runner.json	Remove xUnit v2 runner settings (shadow copy/app domain).
src/Shared/UnitTests/TypeLoader_Tests.cs	Remove xUnit v2 abstractions import.
src/Shared/UnitTests/TestProgram.cs	Removed custom xUnit v2 console entrypoint program.
src/Shared/UnitTests/TestAssemblyInfo.cs	Introduce xUnit v3 pipeline startup + custom test framework wrapper for `TestEnvironment`.
src/MSBuild.UnitTests/XMake_Tests.cs	Remove unused test platform + xUnit v2 abstractions imports.
src/MSBuild.UnitTests/XMake_BinlogSwitch_Tests.cs	Remove xUnit v2 abstractions import.
src/MSBuild.UnitTests/PerfLog_Tests.cs	Remove xUnit v2 abstractions import.
src/MSBuild.UnitTests/MSBuildServer_Tests.cs	Remove xUnit v2 abstractions import.
src/MSBuild.UnitTests/MSBuildMultithreaded_Tests.cs	Remove xUnit v2 abstractions import.
src/MSBuild.UnitTests/Microsoft.Build.CommandLine.UnitTests.csproj	Switch Verify package to xUnit v3 variant.
src/MSBuild.UnitTests/CommandLineSwitches_Tests.cs	Stabilize change-wave state setup for a test.
src/Framework.UnitTests/FileUtilities_Tests.cs	Replace conditional fact usage with runtime skip under xUnit v3.
src/Framework.UnitTests/FileMatcher_Tests.cs	Remove xUnit v2 abstractions import.
src/Directory.Build.targets	Update runner args/trait filtering, add xUnit v3 extensions + MTP coverage integration, remove xUnit console runner wiring.
src/BuildCheck.UnitTests/TaskInvocationAnalysisDataTests.cs	Remove xUnit v2 abstractions import.
src/BuildCheck.UnitTests/EndToEndTests.cs	Remove xUnit v2 abstractions import.
src/BuildCheck.UnitTests/BuildCheckManagerProviderTests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/WarningsAsMessagesAndErrors_Tests.cs	Adjust assembly location resolution logic for task loading.
src/Build.UnitTests/Utilities_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/TerminalLoggerConfiguration_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/TerminalLogger_Tests.cs	Remove Verify-specific attribute usage and xUnit v2 abstractions import.
src/Build.UnitTests/Telemetry/Telemetry_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/TaskHostFactoryLifecycle_E2E_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/Resources_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/ProjectCache/ProjectCacheTests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/NodeStatus_Transition_Tests.cs	Remove Verify-specific attribute usage.
src/Build.UnitTests/NodeStatus_SizeChange_Tests.cs	Remove Verify-specific attribute usage.
src/Build.UnitTests/NetTaskHost_E2E_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/MSBuildTaskHostTests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/Microsoft.Build.Engine.UnitTests.csproj	Switch Verify package to xUnit v3 variant.
src/Build.UnitTests/InvalidProjectFileException_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/Instance/ProjectInstance_Internal_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/Graph/ResultCacheBasedBuilds_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/Graph/ProjectGraph_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/Graph/IsolateProjects_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/Graph/GraphLoadedFromSolution_tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/ExpressionTreeExpression_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/EvaluationProfiler_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/Evaluation/SdkResultEvaluation_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/Evaluation/ExpanderFunction_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/Evaluation/Expander_Tests.cs	Remove xUnit v2 abstractions import; reset change-wave state for stability.
src/Build.UnitTests/EscapingInProjects_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/EndToEndCondition_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/Construction/SolutionProjectGenerator_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/Construction/SolutionFilter_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/Construction/SolutionFile_OldParser_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/Construction/SolutionFile_NewParser_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/Construction/ProjectRootElement_Tests.cs	Clear cached read-only flags to prevent cross-test pollution in same process.
src/Build.UnitTests/ConsoleLogger_Tests.cs	Ensure `Traits.LogAllEnvironmentVariables` is restored after tests.
src/Build.UnitTests/CLR2TaskHost_E2E_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/ChangeWaves_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/BinaryLogger_Tests.cs	Stabilize test behavior around `Traits.Instance` state and environment variables.
src/Build.UnitTests/BackEnd/TaskRouter_IntegrationTests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/BackEnd/TaskRegistry_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/BackEnd/TaskHostFactory_Tests.cs	Adjust assembly location resolution logic for `<UsingTask AssemblyFile=...>`.
src/Build.UnitTests/BackEnd/TaskHostCallback_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/BackEnd/TaskHost_MultiThreadableTask_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/BackEnd/TaskBuilder_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/BackEnd/TargetUpToDateChecker_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/BackEnd/TargetEntry_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/BackEnd/SdkResultOutOfProc_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/BackEnd/SdkResolverLoader_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/BackEnd/MSBuild_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/BackEnd/LoggingContext_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/BackEnd/DebugUtils_tests.cs	Avoid `Directory.GetFiles` when debug dump dir doesn’t exist.
src/Build.UnitTests/BackEnd/BuildRequestConfiguration_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/BackEnd/BuildManager_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/BackEnd/BuildManager_Logging_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/BackEnd/AssemblyTaskFactory_E2E_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.UnitTests/BackEnd/AppHostSupport_Tests.cs	Ensure DOTNET_ROOT_X86 is tracked for restoration in tests.
src/Build.OM.UnitTests/NugetRestoreTests.cs	Remove xUnit v2 abstractions import.
src/Build.OM.UnitTests/Instance/ProjectInstance_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.OM.UnitTests/Definition/ProjectCollection_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.OM.UnitTests/Definition/Project_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.OM.UnitTests/Construction/ProjectMetadataElement_Tests.cs	Remove xUnit v2 abstractions import.
src/Build.OM.UnitTests/Construction/ProjectFormatting_Tests.cs	Remove xUnit v2 abstractions import.
global.json	Configure test runner as Microsoft.Testing.Platform.
eng/Version.Details.xml	Rename Arcade dependency to Microsoft.DotNet.XUnitV3Extensions.
eng/Version.Details.props	Update Arcade xUnit v3 extensions version properties.
eng/dependabot/Directory.Packages.props	Add MTP coverage package; switch Verify dependency to Verify.XunitV3.
Directory.Packages.props	Switch xUnit extensions package and remove xunit.console version pin.
Directory.Build.props	Add xUnit v3/MTP-related properties (TestRunnerName, versions, OutputType for test projects, analyzer suppression).
CoverageWindowsFull.runsettings	Removed legacy VS CodeCoverage runsettings.
CoverageWindowsFull.config	Added new coverage configuration format for MTP coverage integration.
Coverage.runsettings	Removed legacy non-Windows runsettings.
Coverage.config	Added new non-Windows coverage configuration format.

src/UnitTests.Shared/TestEnvironment.cs

src/Shared/UnitTests/TestAssemblyInfo.cs

src/Framework.UnitTests/FileUtilities_Tests.cs

src/Build.UnitTests/WarningsAsMessagesAndErrors_Tests.cs

src/Build.UnitTests/BackEnd/TaskHostFactory_Tests.cs

Youssef1313 force-pushed the dev/ygerges/mtp branch 2 times, most recently from fe653b5 to 65d17a8 Compare April 2, 2026 12:09

Youssef1313 force-pushed the dev/ygerges/mtp branch from ec93ec7 to 6f93f7e Compare April 4, 2026 21:11

Youssef1313 commented Apr 7, 2026

View reviewed changes

Youssef1313 added 19 commits April 8, 2026 16:00

First step to xunit.v3

1df4fde

Remove xunit.abstraction usings

9dde41d

Little progress

df42792

xunit extensibility

66f649b

Progress

852af35

Adjustments

212ac04

Update Directory.Build.targets

51781d3

Coverage

73dba17

global.json

94be79e

missing conflict resolution

17773be

Fix before/after test method assertion

e9a2f67

Fix package ref

30e9516

Fix for discovery

50cccbc

await, to be more safe

979e29e

Changes from the other PR

940fec8

Pulling some changes from #13215

Fix one failure

97dbc86

Downgrade verify for now

aec6389

Ensure s_runningTests is set early enough before it gets called and c…

b36c997

…auses some caches to be bad/unexpected for tests.

Few fixes for the transition of .NET Framework to be executables

443b27c

Youssef1313 added 3 commits April 8, 2026 16:00

Additional fixes due to test order changes

e529f95

Ensure LogAllEnvironmentVariables state isn't mutated

c4f8898

Stabi

9b1339b

Youssef1313 force-pushed the dev/ygerges/mtp branch from cdf2641 to 9b1339b Compare April 8, 2026 14:00

fix build error

9b1b90b

Youssef1313 marked this pull request as ready for review April 8, 2026 19:06

Youssef1313 requested a review from a team as a code owner April 8, 2026 19:06

Copilot AI review requested due to automatic review settings April 8, 2026 19:06

Copilot started reviewing on behalf of Youssef1313 April 8, 2026 19:07 View session

Copilot AI reviewed Apr 8, 2026

View reviewed changes

		var exceptionFilesBefore =
		Directory.Exists(DebugUtils.DebugDumpPath) ? Directory.GetFiles(DebugUtils.DebugDumpPath, "MSBuild_*failure.txt") : Array.Empty<string>();

Conversation

Youssef1313 commented Apr 1, 2026

Uh oh!

rainersigwald commented Apr 2, 2026

Uh oh!

Youssef1313 commented Apr 2, 2026

Uh oh!

Youssef1313 commented Apr 2, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

rainersigwald commented Apr 2, 2026

Uh oh!

Youssef1313 commented Apr 2, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

Youssef1313 Apr 7, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Youssef1313 Apr 7, 2026

Choose a reason for hiding this comment

Uh oh!

Youssef1313 Apr 7, 2026

Choose a reason for hiding this comment

Uh oh!

Copilot AI left a comment

Choose a reason for hiding this comment

Pull request overview

Reviewed changes

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

Youssef1313 commented Apr 2, 2026 •

edited

Loading

Youssef1313 commented Apr 2, 2026 •

edited

Loading

Youssef1313 Apr 7, 2026 •

edited

Loading