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Advanced Jest test modes in the Commons monorepo — /local/ tests, watch mode, live console output, multi-file batching, and test-failure troubleshooting. For routine "run the test for this file" resolution, call the nx-project-for-file tool instead.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
Use Graphite CLI (gt) for stacked PRs and branch management. Use when creating branches, committing changes, submitting PRs, syncing with trunk, or managing stacked pull requests.
Investigate data-integrity / "why does this data look wrong" questions in the Commons codebase (mismatched IDs, orphaned rows, cross-entity divergence, unexpected duplicates, values that don't agree across tables). Use when a ticket or user asks WHY a piece of data is in a surprising state and you must trace it to a root cause through code + production data. Pairs with the commons-sql-query skill for the SQL itself.
Advanced lint/format modes in the Commons monorepo — git-affected linting across a stack, auto-fix, and the full-CI lint pipeline. For routine "lint this file's project" resolution, call the nx-project-for-file tool instead.
Build administrative CRUD interfaces in the Commons admin panel following established patterns for list, create, and edit views.
Create job files in the Commons monorepo. Use when the user wants to create a new job, backfill script, cache job, export job, sync job, bulk operation, cron task, or any background task that runs via HTTP POST endpoint.
Create database migrations from templates in the Commons monorepo. Use when the user wants to create a migration, add database columns, create tables, or modify the database schema.
| name | test-running |
| description | Advanced Jest test modes in the Commons monorepo — /local/ tests, watch mode, live console output, multi-file batching, and test-failure troubleshooting. For routine "run the test for this file" resolution, call the nx-project-for-file tool instead. |
Project + command resolution: Call the
nx-project-for-filetool with the test file path. It returns the owning project, root, and the exactnpx nx test:jest:run <project> -- --runTestsByPath <relative-path>command. This skill covers only the modes the tool does not emit.
/local/ tests — different targetThe tool emits test:jest:run. If the test path contains /local/, swap the target
to test-local:jest:run:
npx nx test-local:jest:run <project> -- --runTestsByPath <relative-path>
| File Path | Target |
|---|---|
packages/athena/__tests__/local/workflow.spec.ts | test-local:jest:run |
commons-packages/backend/__tests__/services/member.spec.ts | test:jest:run |
Same project, same target — pass multiple paths in one invocation:
npx nx test:jest:run @commons/backend -- --runTestsByPath __tests__/a.spec.ts __tests__/b.spec.ts
Omit --runTestsByPath:
npx nx test:jest:run @commons/backend
By default console output is captured and only shown on failure. For live output:
COMMONS_TESTING_LOG_LEVEL=live npx nx test:jest:run <project> -- --runTestsByPath <path>
Log levels: error (default) | warn | info | live
npx nx test:jest:run @commons/backend -- --runTestsByPath __tests__/my.spec.ts --watch
| Issue | Solution |
|---|---|
| EPERM errors | Run with sandbox disabled (permission issues with npm/node modules) |
| Test not found | Verify path is relative to project root, not repo root (the tool returns the correct relative path) |
/local/ tests not running | Use test-local:jest:run target instead of test:jest:run |
The migration directory is corrupt, the following files are missing: ... | Stale shared test DB — commons_test holds migrations from another branch you previously checked out. This is an environment issue, NOT a code defect; do not investigate your changeset. Reset the DB (see below). |
Jest uses a shared commons_test Postgres DB (host 127.0.0.1, port 5432, user root,
password pwd). Switching branches can leave it with migration records for files absent from
your tree, so knex.migrate.latest() fails in beforeAll with migration directory is corrupt. This is shared-state drift, not your code.
Prefer the reset-test-db tool if available — it performs the steps below in the correct
order. Otherwise run, from commons-packages/backend:
# 1. Recreate an EMPTY database. initialize-test-db.ts connects to commons_test directly and
# fails if it does not already exist, so you must CREATE it empty before repopulating.
PGPASSWORD=pwd psql -h 127.0.0.1 -U root -d postgres -c "DROP DATABASE IF EXISTS commons_test;"
PGPASSWORD=pwd psql -h 127.0.0.1 -U root -d postgres -c "CREATE DATABASE commons_test;"
# 2. Populate schema from schema.sql + run migrations to latest. First run is slow (1-3 min);
# let it finish — do not abort it, or the DB is left half-initialized.
NODE_ENV=test npx tsx ./src/__tests__/helpers/initialize-test-db.ts
To confirm a foreign-branch migration is the culprit before resetting:
git log --all --oneline -- "**/<missing-migration-file>"