caliber-testing

To generate Vitest tests matching project conventions, this skill automates test file creation in the __tests__/ directory next to your code. It enforces standard describe/it blocks, uses vi.mock for module mocking, and maintains environment variable isolation using beforeEach and afterEach blocks.

Yes, you can create Vitest mocks for TypeScript modules at the top of the test file. This skill enforces using vi.mock for module mocks with top-of-file usage, ensuring consistent mocking patterns across your automated unit tests.

The standard directory layout for automated Vitest unit tests is placing __tests__/ directories directly alongside the code being tested. This skill enforces this placement pattern in TypeScript or JavaScript projects to maintain consistent test organization.

To isolate environment variables between Vitest test cases, this skill uses beforeEach and afterEach blocks to save and restore environment variables. This ensures complete env var isolation and prevents test contamination across your describe/it blocks.

Yes, this Vitest test generation approach works for TypeScript project refactoring. The skill enables automated test generation specifically for new features, refactors, or onboarding in TypeScript and JavaScript projects using Vitest.