swift-mutation-testing
Measure and improve test effectiveness in Swift codebases using mutation testing
What XERJ indexed
Snapshot
The whole repository at commit 018e422545 (2026-10-23). main is 39 commits ahead.
Selected work
“build the schema in batches of at most 16 mutants per function, …”. 6 files, 338 lines in Sources.
Licence
The repository
LICENSE file checked at the pinned commit; the author agreed to inclusion.
The XERJ corpus
The author agreed by email on 2026-10-28. Same terms as the repository. Answers name the repo, the commit and the file:line.
selected for the XERJ Corpus Hublicence clearedsuggested use: adapt with attribution
climutation-testingswiftswift-package-managerdeveloper-toolsopen-source
Example questions
- How does swift-mutation-testing implement cli?
- What does Sources do in swift-mutation-testing?
- Show the mutation-testing code in swift-mutation-testing.
Inside the indexed corpus
- On GitHub since 2026-03-12, last push 2026-10-29, 1,320 commits on main.
- The pin is 39 commits behind main; the corpus answers from the pinned code, not the newest.
Licence on GitHub and in the corpus
GitHub reported MIT for ericodx/swift-mutation-testing on 2026-10-29, and the LICENSE file at commit 018e422545 was reviewed as MIT. They match, so answers from this corpus carry the same terms as the live repository.
Contributors
Érico Perez Neto (@ericodx) has 1 selected repository on the hub.
Using XERJ with swift-mutation-testing
- Search an OpenAPI spec so an agent can find endpoints The hub files it under API design and specification.
- Best grep alternative for AI coding agents (2026)
- Ask questions about a GitHub repo without cloning it
- Index a reference library for a coding agent
The prompt
Paste it into your AI agent. It clones ericodx/swift-mutation-testing at the pinned commit and indexes it on your machine.
Search the GitHub repository ericodx/swift-mutation-testing with XERJ (https://hub.xerj.org/corpus/ericodx--swift-mutation-testing). Run these in a shell, in order, and check each result before the next: 1. xerj --help (success: it prints usage). If xerj is missing: curl -fsSL https://xerj.org/get | sh 2. git clone https://github.com/ericodx/swift-mutation-testing swift-mutation-testing && git -C swift-mutation-testing checkout 018e422545080e7b800708f18540b88762c4fb82 3. Start a local node and leave it running: xerj --insecure --data-dir ./xerj-data 4. xerj autoindex ./swift-mutation-testing --url http://127.0.0.1:9200 --prefix swift-mutation-testing --progress plain 5. xerj autoindex map --url http://127.0.0.1:9200 Then answer my question from the indexed files and cite the ax_path of every hit. Query syntax: https://xerj.org/llms.txt Licence: MIT. Keep the copyright notice and credit the authors.
Related
Érico Perez NetoAPI design and specification corporalicenseewysking--quantiteraaiderbtctcn/swift-isolation-mapgerardogrisolini/ZenCODEmuhittincamdali/iOSDevelopmentTools
Stats: GitHub API, fetched 2026-10-29. Selected work and consent: the XERJ registry.