Test from target (class or method)

Given a target (class or class.method), an optional source file path, and a test file path, produce or update a Mocha-style test suite (TypeScript .test.ts) aligned with project patterns. Focus on full logical branch coverage, validation, and error propagation. Source lives under src/; tests run with npm test or npm run test:all (Mocha + --require tsx/cjs).

Input parameters

Supply as ordered lines (one per line, no prefixes):

1. TARGET_NAME (${targetCode}) — Fully qualified target to test: Class or Class.method. Examples: UsersModel.getActiveUsers, AuthController.login. Use the real method name (no __ prefix); controllers expose private methods without __.
2. TEST_FILE_PATH (${testFile}) — Repo-relative path to the test file to create or update (must end with .test.ts).
3. (Optional) SOURCE_FILE_PATH (${sourceFile}) — Repo-relative path to the implementation file (e.g. src/controllers/auth.controller.ts) for context and import resolution.

Example:

AuthController.login
test/controllers/auth.controller.test.ts
src/controllers/auth.controller.ts