Skill

detect-test-runners

Detect test runners and testing configuration across Python, JS/TS, Rust, and Go. Used internally by /project-setup.

Install

Run in your terminal

npx claudepluginhub anthropics/claude-plugins-community --plugin project-setup

Tool Access

This skill uses the workspace's default tool permissions.

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Last CommitMar 11, 2026

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View Source View Plugin View on GitHub View README

Detection Sources

Python

pyproject.toml → [tool.pytest.ini_options] → pytest

pytest.ini → pytest

setup.cfg → [tool:pytest] → pytest

conftest.py at project root → pytest

tox.ini → tox (extract [testenv] commands section)

noxfile.py or nox.py → nox

Test directories: check for tests/, test/, src/tests/

JS/TS

package.json → scripts.test → extract runner name

jest.config.js, jest.config.ts, jest.config.json → jest

vitest.config.js, vitest.config.ts, vite.config.ts (with test section) → vitest

.mocharc.yml, .mocharc.json → mocha

playwright.config.ts, playwright.config.js → playwright (e2e)

Test directories: check for __tests__/, test/, tests/, spec/

Rust

Cargo.toml exists → cargo test

Check for tests/ directory (integration tests) and #[cfg(test)] modules (unit tests)

benches/ directory → cargo bench

go.mod exists → go test ./...

Check for *_test.go files to confirm tests exist

Check for testify or other test framework imports

Makefile

Read Makefile for targets named test, tests, check, test-unit, test-integration.

Canonical Test Command

Determine the single best test command:

make test (if Makefile has test target)

tox (if tox.ini exists — it usually wraps pytest)

pytest (if pytest is configured)

npm test / pnpm test / yarn test (if package.json has scripts.test)

cargo test (Rust)

go test ./... (Go)

nox (if noxfile.py exists)

Also determine the single-test command pattern:

pytest: pytest tests/test_foo.py::test_bar -xvs

jest: npx jest --testPathPattern test_foo

cargo: cargo test test_name

go: go test ./pkg/... -run TestName

Test Runner Detection

Find test runners, test directories, and determine the canonical test command.

Detection Sources

Python

pyproject.toml → [tool.pytest.ini_options] → pytest
pytest.ini → pytest
setup.cfg → [tool:pytest] → pytest
conftest.py at project root → pytest
tox.ini → tox (extract [testenv] commands section)
noxfile.py or nox.py → nox
Test directories: check for tests/, test/, src/tests/

JS/TS

package.json → scripts.test → extract runner name
jest.config.js, jest.config.ts, jest.config.json → jest
vitest.config.js, vitest.config.ts, vite.config.ts (with test section) → vitest
.mocharc.yml, .mocharc.json → mocha
playwright.config.ts, playwright.config.js → playwright (e2e)
Test directories: check for __tests__/, test/, tests/, spec/

Rust

Cargo.toml exists → cargo test
Check for tests/ directory (integration tests) and #[cfg(test)] modules (unit tests)
benches/ directory → cargo bench

Go

go.mod exists → go test ./...
Check for *_test.go files to confirm tests exist
Check for testify or other test framework imports

Makefile

Read Makefile for targets named test, tests, check, test-unit, test-integration.

Canonical Test Command

Determine the single best test command:

make test (if Makefile has test target)
tox (if tox.ini exists — it usually wraps pytest)
pytest (if pytest is configured)
npm test / pnpm test / yarn test (if package.json has scripts.test)
cargo test (Rust)
go test ./... (Go)
nox (if noxfile.py exists)

Also determine the single-test command pattern:

pytest: pytest tests/test_foo.py::test_bar -xvs
jest: npx jest --testPathPattern test_foo
cargo: cargo test test_name
go: go test ./pkg/... -run TestName

Output

Return:

Test runner name and version (if detectable)
Test directory convention
Canonical test command (run all)
Single-test command pattern
Suggested permissions.allow entries (e.g. Bash(pytest *), Bash(cargo test *))
CLAUDE.md ## Testing section content