Let's be honest: hand-written tests by an experienced developer who understands the codebase are still the gold standard. A skilled engineer writing tests thinks about edge cases, business logic, failure modes, and user scenarios that no AI can fully replicate.
So why would you use ShipTested instead?
Because the alternative to ShipTested isn't “perfectly hand-written tests.” The alternative is no tests at all.
| Factor | ShipTested | Manual Testing |
|---|---|---|
| Time to 80% coverage | Minutes | Days to weeks |
| Quality ceiling | Good (covers most paths + edges) | Excellent (human insight) |
| Quality floor | Decent (always runs, always passes) | Terrible (if rushed or skipped) |
| Cost | $15/mo | Developer time ($50-200/hr) |
| Consistency | Same quality every time | Varies by developer, mood, deadline |
| Edge case discovery | Good (AI explores systematically) | Great (human intuition) |
| Business logic understanding | Limited (tests behavior, not intent) | Deep (tests what should happen) |
| Actually gets done | Automated | Often deprioritized |
| Maintenance | Re-generate when code changes | Manual updates required |
| Learning value | Low (you don't write them) | High (forces you to understand code) |
In theory, manual testing wins. In practice, the comparison isn't ShipTested vs. beautiful hand-crafted tests. It's ShipTested vs. what actually happens in most projects:
ShipTested doesn't produce perfect tests. It produces tests that exist, run, and catch regressions. For most projects, having imperfect tests is infinitely better than having no tests.
ShipTested tests what your code does. A human tests what your code should do. If your calculateDiscount() function has a bug where it gives 50% off instead of 5%, ShipTested might write a test that asserts calculateDiscount(100) returns 50 because that's what the code does. A human would catch that 50% is wrong because they understand the business intent.
End-to-end flows that span multiple pages, involve real user behavior, and test the “happy path” from signup to checkout require human judgment about what matters to the user.
Penetration testing, auth flow testing, and vulnerability assessment require adversarial thinking that AI doesn't reliably do.
You have 200 files and 0 tests. A developer would take weeks. ShipTested takes an afternoon.
For functions with clear inputs and outputs, AI-generated tests are thorough and reliable. Edge cases, type coercion, boundary values: the AI is systematic about covering these.
You don't need perfect tests to catch regressions. You need tests that run on every PR and fail when something breaks. ShipTested provides that baseline.
ShipTested generates tests the same way every time. No variation based on who's on the team, how much time pressure they're under, or whether it's Friday afternoon.
The smartest approach combines both:
Utility functions, components, API routes. Let the AI handle the volume.
Business logic validation, complex user flows, security-sensitive paths. The tests that require human understanding.
Every new PR gets auto-generated tests. Your team manually reviews and enhances the ones that matter.
You go from “zero tests, terrified to refactor” to “solid baseline coverage with hand-crafted tests on the critical paths.” In days, not months.
When you're testing business logic that requires understanding the “why,” not just the “what.” When you're writing end-to-end tests. When security is critical. When you're learning to code and writing tests teaches you about your own code.
When you need coverage and you need it now. When your existing codebase has zero tests. When your team knows they should test but never has time. When you want a safety net that exists automatically, not aspirationally.
The enemy of good testing isn't AI-generated tests. It's no tests.