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Add comprehensive unit tests for backend (182 tests, 0% → broad coverage)#2

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devin/1781204135-add-unit-tests
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Add comprehensive unit tests for backend (182 tests, 0% → broad coverage)#2
devin-ai-integration[bot] wants to merge 1 commit into
mainfrom
devin/1781204135-add-unit-tests

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Summary

The repo previously had zero tests (test script was echo "Error: no test specified" && exit 1). This PR adds a complete testing infrastructure and 182 passing unit tests across 15 test files, covering the backend's most critical modules.

What's added:

Testing framework: Vitest configured via vitest.config.ts, test script updated to vitest run.

Test coverage by module layer:

Layer Files tested Key scenarios
Validators (6 schemas) authSchema, userSchema, repoSchema, issueSchema, commentSchema, forkSchema Valid/invalid inputs, boundary lengths, missing fields, UUID validation
Middlewares isAuthenticated, optionalAuth Missing token → 401, valid token → req.user set, expired token → error handling
Utils generateToken JWT sign calls with correct payload/expiry, cookie setting
Controllers (6) auth, user, repo, issue, comment, fork Input validation, not-found cases, auth guards, success paths, Prisma error codes (P2025)

All external dependencies (Prisma, Redis, bcrypt, jwt, S3) are fully mocked — tests run in <3s with no network/DB required.

Note: Pre-existing TypeScript lint errors from missing Prisma generated client (prisma generate not run) are unrelated to this PR.

Link to Devin session: https://app.devin.ai/sessions/164a58f78d2d4bdea1b699d868c29768
Requested by: @amnkarn

- Set up Vitest testing framework with vitest.config.ts
- Add unit tests for all 6 Zod validator schemas (auth, user, repo, issue, comment, fork)
- Add unit tests for isAuthenticated and optionalAuth middlewares
- Add unit tests for generateToken utility
- Add unit tests for all 6 controllers (auth, user, repo, issue, comment, fork)
- Update package.json test script from placeholder to 'vitest run'
- All 182 tests passing

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
@devin-ai-integration

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