microsoft/testfx

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This repository holds the source code of Microsoft.Testing.Platform (MTP), a lightweight alternative to VSTest, as well as MSTest adapter and framework.

Stars: 1k
Forks: 312
Open beginner issues: 0
Indexed issues: 67
Avg merge: 8h 12m
Merged PRs (30d): 495

Dominant language: C#
License: MIT
Last GitHub push: Sep 20, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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[quality-improver] Repository Quality: AzureFoundry Extension Missing from Self-Registration Acceptance Test Open

type/automation type/tech-debt

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

microsoft/testfx#11431 · Opened Sep 21, 2026
[efficiency-improver] perf: single-pass Traits conversion in TestCaseExtensions Open

agentic-workflows area/performance type/automation

Difficulty 2/5 1-3 hours Newbie friendliness 25/100

microsoft/testfx#11430 · Opened Sep 21, 2026
[file-diet] Refactor AbortAtDeadlineExtension.cs (600 lines) into focused partial-class files Open

type/automation type/tech-debt

microsoft/testfx#11424 · 1 reaction · 2 assignees · Opened Sep 21, 2026
Output device messages are invisible in Visual Studio at the default logging level (server mode) Open

area/mtp needs/triage

Difficulty 4/5 3-5 days Newbie friendliness 48/100

microsoft/testfx#11422 · 1 comment · Opened Sep 21, 2026
Running MTP tests from Visual Studio Test Explorer does not honor `launchsettings.json` Open

external/test-explorer needs/triage

microsoft/testfx#11315 · 1 assignee · Opened Sep 15, 2026
[dependabot-bundler] nuget: Directory.Packages.props Open

dependencies

Difficulty 1/5 Under an hour Newbie friendliness 25/100

microsoft/testfx#11094 · Opened Sep 7, 2026
[efficiency-improver] Monthly Activity 2026-09 Open

area/performance type/automation

Difficulty 5/5 Over a week Newbie friendliness 20/100

microsoft/testfx#11023 · 1 comment · Opened Sep 3, 2026
[test-improver] Monthly Activity 2026-09 Open

testing type/automation type/test-gap

Difficulty 5/5 Over a week Newbie friendliness 20/100

microsoft/testfx#10920 · Opened Sep 1, 2026
Make Assert.IsNotNull generic and have it return the value that was checked Open

area/assertion

Difficulty 5/5 Over a week Newbie friendliness 42/100

microsoft/testfx#10918 · 4 comments · Opened Sep 1, 2026
[perf-improver] Monthly Activity 2026-09 Open

area/performance type/automation

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/testfx#10914 · Opened Sep 1, 2026
Raise the minimum Roslyn version for MSTest.Analyzers to 4.14 Open

area/analyzers type/breaking-change

Difficulty 4/5 3-5 days Newbie friendliness 48/100

microsoft/testfx#10446 · Opened Aug 5, 2026
Analyzer to detect not awaited async calls in a test case Open

area/analyzers

Difficulty 3/5 1-2 days Newbie friendliness 68/100

microsoft/testfx#9816 · 3 comments · Opened Jul 10, 2026
Roslyn analyzer: warn when Microsoft.Testing.Extensions.OpenTelemetry is referenced but AddOpenTelemetryProvider is never called Open

area/mtp-observability

Difficulty 5/5 Over a week Newbie friendliness 48/100

microsoft/testfx#8931 · Opened Jun 8, 2026
Remove TestRequestExecutionTimeInfo binary-compat shim in next major release Open

area/mtp type/breaking-change

Difficulty 3/5 1-2 days Newbie friendliness 70/100

microsoft/testfx#8925 · Opened Jun 8, 2026
Race condition between MTP extensions using ITestHostProcessLifetimeHandler Open

area/mtp

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/testfx#8904 · 7 comments · 2 reactions · Opened Jun 7, 2026
Add JSON / NDJSON test report extension (Microsoft.Testing.Extensions.JsonReport) Open

area/mtp area/mtp-reporting

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/testfx#8828 · Opened Jun 4, 2026
Emit compact end-of-run failure index for LLM/agent consumption Open

area/mtp area/terminal-reporter

Difficulty 3/5 1-2 days Newbie friendliness 65/100

microsoft/testfx#8827 · Opened Jun 4, 2026
[RFC] Agent/LLM-efficient test output for Microsoft.Testing.Platform Open

area/mtp area/terminal-reporter type/discussion

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/testfx#8824 · 2 comments · Opened Jun 4, 2026
[Proposal]: Flaky test management Open

area/mtp

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/testfx#8761 · 11 comments · 7 reactions · Opened Jun 2, 2026
Investigate C# union support impact on MSTest parameterized tests Open

area/mstest area/parameterized-tests

Difficulty 5/5 Over a week Newbie friendliness 30/100

microsoft/testfx#7741 · 1 comment · Opened Apr 16, 2026
[MTP][Breaking] Don't set `IsTestingPlatformApplication` at all by MTP Open

area/mtp type/breaking-change

Difficulty 4/5 3-5 days Newbie friendliness 45/100

microsoft/testfx#7665 · 2 comments · Opened Apr 2, 2026
[MTP][Breaking] Change the default of `--show-stdout` and `--show-stderr` to failed. Open

area/mtp area/terminal-reporter type/breaking-change

Difficulty 3/5 1-2 days Newbie friendliness 48/100

microsoft/testfx#7664 · 1 reaction · Opened Apr 2, 2026
Microsoft.Testing.Extensions.Telemetry blocked from upgrading to latest Microsoft.ApplicationInsights Open

area/mtp area/mtp-observability

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/testfx#7465 · 8 comments · Opened Feb 24, 2026
MSTest attributes should be sealed in most cases. Open

area/mstest type/breaking-change

Difficulty 3/5 1-2 days Newbie friendliness 42/100

microsoft/testfx#7374 · Opened Feb 9, 2026
[Breaking] Move UWP/WinUI support to separate packages Open

area/mstest type/breaking-change

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/testfx#7225 · 4 reactions · Opened Jan 14, 2026
Nitpick: `dotnet test` with MTP shows incorrect target framework version Open

area/mtp

Difficulty 3/5 1-2 days Newbie friendliness 42/100

microsoft/testfx#7066 · 4 comments · 1 reaction · Opened Dec 6, 2025
`ITestHostManager.AddTestSessionLifetimeHandle` should be `Add...Handler` Open

area/mtp type/breaking-change

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

microsoft/testfx#7063 · 2 comments · 1 reaction · Opened Dec 6, 2025
DeploymentItemAttribute shouldn't be available on netstandard2.0 Open

area/mstest type/breaking-change

Difficulty 3/5 1-2 days Newbie friendliness 38/100

microsoft/testfx#6856 · Opened Nov 2, 2025
Only track last status / Allow overridding test status Open

area/mtp needs/design

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/testfx#6843 · 2 comments · Opened Oct 31, 2025
[Feature]: Add differ extensibility for MSTest assertions Open

area/assertion area/mstest

Difficulty 5/5 Over a week Newbie friendliness 30/100

microsoft/testfx#6771 · 1 comment · Opened Oct 20, 2025
MTP-generated .trx file is missing Open

area/mtp area/trx needs/design

Difficulty 3/5 1-2 days Newbie friendliness 45/100

microsoft/testfx#6590 · 4 comments · Opened Sep 23, 2025
Pipe protocol: The design of InstanceId Open

area/server-mode-pipe

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/testfx#6337 · 1 comment · Opened Aug 10, 2025
Discuss TestContext cancellation Open

area/mstest needs/design

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/testfx#6157 · 1 comment · Opened Jul 24, 2025
Discuss abort callbacks in StopPoliciesService Open

area/mtp type/discussion

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/testfx#6109 · 2 comments · Opened Jul 21, 2025
[Breaking] Disable CaptureTraceOutput by default Open

area/mstest type/breaking-change

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/testfx#5756 · 1 comment · Opened Jun 12, 2025
[JsonRpc Protocol] Separate location.method to location.method-name and location.method-parameters Open

area/server-mode-jsonrpc

Difficulty 5/5 Over a week Newbie friendliness 28/100

microsoft/testfx#5476 · 1 comment · Opened Apr 16, 2025
Refine implementation of retry in dotnet test Open

area/mtp area/mtp-retry external/dotnet-test needs/design

Difficulty 4/5 3-5 days Newbie friendliness 45/100

microsoft/testfx#5361 · 3 comments · 1 reaction · Opened Apr 2, 2025

microsoft/testfx

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