Fix Your AI-Built Vitest Test Suite
Fast Vite-native unit testing framework for JavaScript and TypeScript. AI tools generate tests with poor mocking, missing edge cases, and inadequate assertions.
Common Vitest issues we find
Problems specific to AI-generated Vitest integrations.
Mocking modules incorrectly with vi.mock()
AI-generated tests use vi.mock() with incorrect factory functions, missing auto-mock setup, or mock implementations that don't match the module's actual interface.
Only testing the happy path
Generated tests verify that functions work with valid input but skip error cases, edge cases, boundary values, and empty or null inputs.
Test isolation broken by shared mutable state
AI tools set up mock state in beforeAll instead of beforeEach, or modify shared variables across tests without resetting them, causing order-dependent test failures.
Async tests not properly awaited
Generated tests call async functions without await, causing tests to pass before the assertions run and masking real failures.
Snapshot tests used excessively
AI tools overuse snapshot testing for dynamic content, creating snapshots that break on every change and get blindly updated without review.
Start with a self-serve audit
Get a professional review of your Vitest integration at a fixed price.
Security Scan
Black-box review of your public-facing app. No code access needed.
- OWASP Top 10 checks
- SSL/TLS analysis
- Security headers
- Expert review within 24h
Code Audit
In-depth review of your source code for security, quality, and best practices.
- Security vulnerabilities
- Code quality review
- Dependency audit
- AI pattern analysis
Complete Bundle
Both scans in one package with cross-referenced findings.
- Everything in both products
- Cross-referenced findings
- Unified action plan
100% credited toward any paid service. Start with an audit, then let us fix what we find.
How it works
Tell us about your app
Share your project details and what you need help with.
Get a clear plan
We respond in 24 hours with scope, timeline, and cost.
Launch with confidence
We fix what needs fixing and stick around to help.
Frequently asked questions
Why do my AI-generated Vitest tests pass but my code is clearly broken?
The most common cause is unawaited async assertions. If your test calls an async function without await, the test completes before the assertion runs, always passing. Other causes include incorrect mocks that return valid-looking data regardless of input.
How do I fix mock-related errors in my AI-generated tests?
AI tools frequently create mocks that don't match the real module interface, use vi.mock() incorrectly (it's hoisted!), or forget to reset mocks between tests. We audit every mock against the real implementation and ensure proper isolation with beforeEach/afterEach.
Are my AI-generated tests actually providing code coverage value?
Often not. AI tools generate tests that achieve high line coverage but low branch coverage -- they test that functions work but not that they fail correctly. We add edge case tests, error handling tests, and boundary condition tests that catch real bugs.
Related resources
Other Integrations
Need help with your Vitest integration?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.