Expose tests that pass on broken code
Every blind pass and surviving mutant is pinned to a file and a line, so you fix the test that matters, not the one that’s easiest.
Announcing BonaFident 1.0 — The New Standard for CI/CD
Green tests lie. Catch them before merge.
BonaFident mutation-tests every pull request in under two minutes — and blocks the merge the moment your suite passes on broken code.
Drag the mutant into the gate
ROR
if (balance >= 0)
if (balance > 0)CI Gate
BonaFident
The blind-pass problem
Coverage shows what ran. Not what’s protected.
A line can be executed by a test that asserts nothing. BonaFident rewrites your code the way real bugs do and checks whether your suite notices.
Line coverage0%
Mutation score0%
53 points of false confidence
Turn quality into a CI contract
Set a floor on killed mutants and the pipeline enforces it. Test quality can no longer quietly erode between releases.
Evidence for every merge
Each run lands in a machine-readable ledger and a dashboard your VP can read — ready for audits, post-mortems and board slides.
Gatekeeper
Every merge walks past the executioner
One command in any pipeline. Tests can stay green — the gate still blocks the merge when a mutant survives.
jobs: mutation-gate: runs-on: ubuntu-latest steps: - uses: actions/checkout@v4 - run: npx bonafident run env: BONAFIDENT_GATE: "0.80"src/billing/authorize.ts
Original
import { settle } from './ledger';export function authorize(user: Account) { if (user.balance > 0) { return settle(user); } return false;}Gate armed · awaiting mutant
- Tests
- —
- Mutants
- 8 queued
- Score
- 0.0%Gate ≥ 90%
Tests stay green. The gate doesn't.
Speed
Mutation testing used to take hours. Now it fits in your pull request.
Same question — do your tests actually catch bugs? — answered before your reviewer finishes reading the changes.
Legacy mutation testingETA 4:00:0000:00
0.00% done
BonaFident00:00
0% done
How is it this fast?
Our execution engine is proprietary. We’ll show you the results — not the blueprints.
Nice try. The engine stays sealed.
≤ 2 min
Default audit budget per pull request
1
Command to wire into any pipeline
0
Config files required — every flag is optional
TS · JS · Go · Vue
Languages and frameworks covered
Illustrative race. Real timings depend on suite size and runner hardware.
Platform
Everything the control room needs
Analytics, gates, and toxic-file intelligence — composed, not cluttered.
Analytics Engine for Tech Debt
Mutation score trends that make risk visible across every commit.
Latest mutation score
0%+29 pts since first run
CI/CD Gatekeeper Integration
Block merges when surviving mutants slip past green tests.
One command, any pipeline
npx bonafident runTop Toxic Files Intelligence
Surface the files that keep harboring survivors.
| File | Hits |
|---|---|
| src/billing/charge.ts | 12 |
| src/auth/guards.ts | 9 |
| src/runs/parser.ts | 7 |
| src/payments/refund.ts | 5 |
| src/session/token.ts | 4 |
Hover a row to re-scan it
Compare
Everything coverage promised. None of the waiting.
How BonaFident stacks up against the two ways teams judge test quality today.
| Capability | Code coverage | Legacy mutation testing | BonaFident |
|---|---|---|---|
| Proves tests fail when code breaks | No | Yes | Yes |
| Time per pull request | Seconds | Hours | Under 2 min |
| Flags covered code that is never asserted | No | Partially | Yes |
| Blocks the merge automatically | Partially | Partially | Yes |
| Regression lock on test quality | No | Partially | Yes |
| Toxic-file trends across runs | No | No | Yes |
| Audit-ready evidence ledger | Partially | Partially | Yes |
| One-command setup | Yes | No | Yes |
FAQ
Answers that unblock your team
The questions engineering leaders ask before gating production merges.
Coverage proves lines were executed — not that assertions would fail when logic mutates. BonaFident injects mutants and fails the gate when tests stay green, exposing blind passes coverage never sees.
Stop merging false positives. Start mutating.
Spin up a workspace in minutes and gate your next merge with zero-trust mutation confidence.