test: consolidate worker/api db mock into shared test-fixtures

[bbornino]

Summary

Closes #193.

The mocked drizzle db and its faked table/column definitions were duplicated between apps/worker/test-utils/setup.ts and apps/api/test-utils/setup.ts, with the two copies drifting from each other over time (different tables stubbed, different columns per shared table).

• Added createDbMock() to packages/test-fixtures/src/db-mock.ts — a single factory that's the superset merge of both apps' previous mocks (union of all stubbed tables/columns, and a db object exposing both the core query-builder shape worker's tests use — insert/delete/select/transaction — and the relational-query shape api's tests use — query.*).
• Both apps now call vi.mock("@playfulprogramming/db", () => createDbMock()) from their own setup.ts instead of hand-rolling the mock. The vi.mock() call itself has to stay local to each app — Vitest's mock-hoisting only intercepts calls made from a file inside that app's own transformed source tree, not one made from inside a workspace package resolved via node_modules — but the actual mock data/logic is now defined once and shared.
• Preserved the Map-based dedup behavior from worker's original mock (repeated db.insert(table)/db.delete(table) calls for the same table return the same chainable mock instance) verbatim — getEmbedDataFromGist.test.ts exercises this directly and still passes.

Test plan

• pnpm test:unit passes for all NX projects (93 tests across api/worker, plus lint/knip/publint/sherif)
• pnpm run build:all passes (tsc --noEmit clean for both api and worker)
• pnpm prettier --check clean on all changed files

Summary by CodeRabbit

• Tests
  • Standardized database mocking across API and worker test suites.
  • Added reusable mock behavior for common database operations and queries.
  • Improved consistency and maintainability of test setup fixtures.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: e24c8126-bd36-46a4-8648-2b8b5e9642be

📥 Commits

Reviewing files that changed from the base of the PR and between 8188426 and d28f6b6.

📒 Files selected for processing (4)

• apps/api/test-utils/setup.ts
• apps/worker/test-utils/setup.ts
• packages/test-fixtures/src/db-mock.ts
• packages/test-fixtures/src/index.ts

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📝 Walkthrough

Walkthrough

A reusable createDbMock() factory is added to test-fixtures, exported publicly, and used by API and worker Vitest setup modules instead of inline database mock definitions.

Changes

Shared database mock

Layer / File(s)	Summary
Database mock factory and export packages/test-fixtures/src/db-mock.ts, packages/test-fixtures/src/index.ts	Adds createDbMock() with database operation stubs, query namespaces, and entity fixtures, then re-exports it from the package.
Application test setup integration apps/api/test-utils/setup.ts, apps/worker/test-utils/setup.ts	API and worker test setups import createDbMock() and use it to mock @playfulprogramming/db.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Possibly related issues

• Consolidate drizzle/db test utilities in test-fixtures #193: Centralizes shared Drizzle/database mocks and table definitions in test-fixtures for API and worker test reuse.

Possibly related PRs

• playfulprogramming/hoof#112: Also wires @playfulprogramming/test-fixtures into application Vitest setup modules.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: consolidating worker and API database mocks into shared test fixtures.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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