All four backends (Lean, C, Python, Rust) run the same yaml-test-suite test cases through the verified parser via their respective FFI layers.
| Preset | Passed | Failed | Skipped | Total | Backends Match? |
|---|---|---|---|---|---|
| unlimited | 783 | 86 | 151 | 1020 | ✓ All identical |
| default | 774 | 95 | 151 | 1020 | ✓ All identical |
| strict | 774 | 95 | 151 | 1020 | ✓ All identical |
| permissive | 774 | 95 | 151 | 1020 | ✓ All identical |
| safe_tags | 774 | 95 | 151 | 1020 | ✓ All identical |
| Backend | unlimited | default | strict | permissive | safe_tags |
|---|---|---|---|---|---|
| lean | 783/86/151 | 774/95/151 | 774/95/151 | 774/95/151 | 774/95/151 |
| c | 783/86/151 | 774/95/151 | 774/95/151 | 774/95/151 | 774/95/151 |
| python | 783/86/151 | 774/95/151 | 774/95/151 | 774/95/151 | 774/95/151 |
| rust | 783/86/151 | 774/95/151 | 774/95/151 | 774/95/151 | 774/95/151 |
✓ All backends produce identical results for every preset