microsoft / microsoft/testfx

[mutation-test-improver] Monthly Report 2026-09

Open
#11,346 0 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

type/automation type/test-gap
Dominant language
C#
Stars
1k
Forks
312
Avg merge
8h 30m
Merged PRs (30d)
469

Description

Mutation Testing Report for September 2026

Suggested Actions for Maintainer

  • Investigate failed run: the Mutation testing run completed with conclusion failure; no mutation report was produced, so no score/hotspot data is available for this run.

Score Trend

(No score data available yet — every run processed so far failed before producing a report.)

Top Survived-Mutant Hotspots

No actionable survived mutants identified this run.

Known Equivalent Mutants

None recorded yet.

Run History

2026-09-19 05:15 UTC - Run
  • ⚠️ Run failed/cancelled - no report available
2026-09-18 05:19 UTC - Run
  • ⚠️ Run failed/cancelled - no report available
2026-09-17 05:20 UTC - Run
  • ⚠️ Run failed/cancelled - no report available

🤖 Automated content by GitHub Copilot. Generated by the Mutation Test Improver workflow. · copilot · auto · 39.4 AIC · ⌖ 8.17 AIC · ⊞ 15.2K · [◷]( · )

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by opening the linked failed Mutation testing run and inspect its GitHub Actions logs, then compare it with the other failed runs listed in the report. Done means the workflow completes successfully and produces a mutation report with score or hotspot data.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp, github-actions
Domain
ci-cd, testing-qa
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Active
Clarity
Needs clarification
Newbie friendliness
35/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.