[release/11.0.1xx-preview3] Source code updates from microsoft/vstest

[dotnet-maestro]

Note

This is a codeflow update. It may contain both source code changes from
the source repo
as well as dependency updates. Learn more here.

This pull request brings the following source code changes

From https://github.com/microsoft/vstest

• Subscription: 72a1750f-05fe-4d7d-b9b7-b11b6fa82f2b
• Build: 20260402.4 (309001)
• Date Produced: April 2, 2026 4:04:22 PM UTC
• Commit: 5c5c4f1c8169984605ebd6802d6f0abb9e5122ac
• Commit Diff: e315381...5c5c4f1
• Branch: main

Diff the source with this PR branch

darc vmr diff --name-only https://github.com/microsoft/vstest:5c5c4f1c8169984605ebd6802d6f0abb9e5122ac..https://github.com/dotnet/dotnet:darc-release/11.0.1xx-preview3-931a519d-9f4a-4897-abaa-1755424dcb14

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• [main] Source code updates from dotnet/dotnet microsoft/vstest#15421
• Cache dotnet and unpacking local packages in Integration Tests microsoft/vstest#15376
• Brand as 18.6 microsoft/vstest#15423
• Upgrading code coverage version to 18.5.1, microsoft/vstest#15422
• [main] Update dependencies from dotnet/arcade microsoft/vstest#15429
• [main] Update dependencies from devdiv/DevDiv/vs-code-coverage microsoft/vstest#15430
• [main] Source code updates from dotnet/dotnet microsoft/vstest#15426
• Updating System.Collections.Immutable to 9.0.11 microsoft/vstest#15425
• [main] Source code updates from dotnet/dotnet microsoft/vstest#15433
• Add skill writing skill, skill validating skill, and build and test skill microsoft/vstest#15434
• [main] Source code updates from dotnet/dotnet microsoft/vstest#15437
• Move VS insertion pipeline from Release pipelines to normal pipelines microsoft/vstest#15438
• Comment out cron schedule for insertion microsoft/vstest#15439
• [main] Source code updates from dotnet/dotnet microsoft/vstest#15441
• Move to mstest 4 microsoft/vstest#15443
• [main] Source code updates from dotnet/dotnet microsoft/vstest#15447
• Fix attachVS when used for debugging integration tests microsoft/vstest#15451
• Replace dotnet.config, with global.json microsoft/vstest#15449
• Document debugging integration tests with AttachVS microsoft/vstest#15452
• Fix stack overflow tests microsoft/vstest#15461
• Make TestAssets.sln buildable locally microsoft/vstest#15466
• Try filtering out tests microsoft/vstest#15463
• Build just once when tfms run in parallel microsoft/vstest#15465
• Review simplify compatibility sources, deduplicate tests microsoft/vstest#15472
• Cleanup dead TRX code microsoft/vstest#15474
• Update .NET runtimes to 8.0.25, 9.0.14, and 10.0.4 microsoft/vstest#15481
• Compat matrix checker microsoft/vstest#15480
• [main] Update dependencies from devdiv/DevDiv/vs-code-coverage microsoft/vstest#15446
• [main] Update dependencies from dotnet/arcade microsoft/vstest#15445
• Add trx analysis skill microsoft/vstest#15486
• [main] Update dependencies from dotnet/arcade microsoft/vstest#15495
• Split integration tests to single tfm and multi tfm project microsoft/vstest#15484
• Update matrix microsoft/vstest#15477
• [main] Update dependencies from devdiv/DevDiv/vs-code-coverage microsoft/vstest#15497
• Revert removal of Video Recorder microsoft/vstest#15336
• Break infinite restore loop in VS microsoft/vstest#15503
• Use global package cache for build, and local for running integration tests microsoft/vstest#15500
• Update contributing microsoft/vstest#15505
• Reduce test wall-clock time by increasing minThreads microsoft/vstest#15502
• Indicator flakiness microsoft/vstest#15513
• Fix ci build microsoft/vstest#15515
• Fix thread safety issues microsoft/vstest#15512
• Optimize DotnetSDKSimulation_PostProcessing test (163s → 61s) microsoft/vstest#15516
• [main] Source code updates from dotnet/dotnet microsoft/vstest#15496
• Speed up blame tests by filtering non-.NET processes from dump collection microsoft/vstest#15518
• Build isolated test assets for single TFM instead of 7 microsoft/vstest#15517
• Remove unused dependencies from Library.IntegrationTests microsoft/vstest#15527
• Remove printing _attachments content to console microsoft/vstest#15520
• Add Linux/macOS test filtering guide to CONTRIBUTING.md microsoft/vstest#15521
• Change integration test parallelization from ClassLevel to MethodLevel microsoft/vstest#15526
• Unify target framework checks with IsNetFrameworkTarget/IsNetTarget microsoft/vstest#15523
• Add unattended work instructions to copilot-instructions.md microsoft/vstest#15531
• Reduce code style rule severity from warning to suggestion microsoft/vstest#15522
• Remove Debug/Release line number branching from tests microsoft/vstest#15519
• Revise unattended work instructions in copilot-instructions.md microsoft/vstest#15532
• Improve CompatibilityRowsBuilder error message with diagnostic details microsoft/vstest#15529
• docs: add git worktree and upstream sync workflow to copilot-instructions.md microsoft/vstest#15538
• Add VSIX runner to smoke tests microsoft/vstest#15541
• Remove deprecated WebTest and TMI test methods microsoft/vstest#15525
• [main] Source code updates from dotnet/dotnet microsoft/vstest#15547
• [main] Update dependencies from devdiv/DevDiv/vs-code-coverage microsoft/vstest#15548
• Fix compatibility test failures for legacy vstest.console and MSTest adapter microsoft/vstest#15534
• Add README.md to NuGet packages microsoft/vstest#15550
• Convert TestPlatform.sln to slnx format microsoft/vstest#15551
• Convert test/TestAssets .sln files to .slnx format microsoft/vstest#15557
• Enable parallelization for blame data collector tests microsoft/vstest#15552
• Fix CI failure when GeneratedTestAssets directory doesn't exist microsoft/vstest#15556
• Set DOTNET_ROOT in test.sh for local Linux usage microsoft/vstest#15559
• Use MSTest recommended analyzers microsoft/vstest#15539
• Document semicolon handling in RunSettings test parameters microsoft/vstest#15561
• Enable CA1067 analyzer and fix violations microsoft/vstest#15560
• Fix HTML logger parallel file collision with atomic file creation microsoft/vstest#15562
• Deduplicate package extraction between verify-nupkgs and IntegrationTestBuild microsoft/vstest#15554
• Fix MSTEST0046: use Assert.MatchesRegex instead of StringAssert.Matches microsoft/vstest#15575
• Attach diagnostic logs to acceptance test runs microsoft/vstest#15572
• Deprecate EnableShutdownAfterTestRun which is no-op microsoft/vstest#15576
• Skip VideoRecorder test on CI due to access denied errors microsoft/vstest#15587
• Fix integration test build collision with mutex + EventWaitHandle microsoft/vstest#15568
• Reduce blame test flakiness: increase hang dump timeout to 10s microsoft/vstest#15590
• Fix concurrent modification in MetricsCollection microsoft/vstest#15581
• Fix PassingNoArguments test: disable --diag to preserve help output microsoft/vstest#15583
• perf: fix dictionary double-lookups, Collection.Contains, and LINQ allocations microsoft/vstest#15533
• Replace VSSDK-sourced DLLs with proper package references microsoft/vstest#15567
• Add target framework to default TRX file name microsoft/vstest#15565
• [main] Update dependencies from dotnet/arcade microsoft/vstest#15546
• Update post-build template parameters microsoft/vstest#15591
• Fix path for post-build template and adjust validation microsoft/vstest#15592
• Add azure-pipelines-official.yml to pipeline files microsoft/vstest#15594
• Update comment formatting for signing validation microsoft/vstest#15597
• Fix enable-auto-merge for maestro microsoft/vstest#15595

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Auto-approve maestro PRs microsoft/vstest#15598

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Update enable-auto-merge to squash microsoft/vstest#15602
• Update enable-auto-merge.yml for the correct permissions microsoft/vstest#15606
• [main] Source code updates from dotnet/dotnet microsoft/vstest#15613
• [main] Update dependencies from devdiv/DevDiv/vs-code-coverage microsoft/vstest#15612
• [main] Update dependencies from dotnet/arcade microsoft/vstest#15610
• Add 365 regression tests for untested bug fixes microsoft/vstest#15615
• Fix typos and add comments to empty catch blocks microsoft/vstest#15609
• Fix flaky EventLogCollector test: ensure deterministic event log entries microsoft/vstest#15607
• Report child process info on connection timeout microsoft/vstest#15603
• Mark PathConverter tests as Windows-only microsoft/vstest#15617

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Localized file check-in by OneLocBuild Task: Build definition ID 1222: Build ID 2939497 microsoft/vstest#15618

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Fix HangDumpOnTimeout flakiness and ignore VideoRecorder test microsoft/vstest#15616

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Add copilot-setup-steps.yml microsoft/vstest#15604
• Track when vstest provides Newtonsoft.Json for extensions in telemetry microsoft/vstest#15596
• Add CreateNoNewWindow RunConfiguration setting microsoft/vstest#15585

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Add preview packages documentation microsoft/vstest#15628

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Cleanup filter implementation microsoft/vstest#15629

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• bump to 18.7 microsoft/vstest#15631
• Localized file check-in by OneLocBuild Task: Build definition ID 1222: Build ID 2942164 microsoft/vstest#15626

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.