Elamur Groupantsmlab-suite-run-gate
The groupant beside mlab/src/suite.rs in the Mova repository: what the code computes, what it never does, how to go back from its outputs, its invariants, cost and checks.
Facts
Implementation material. A Mova code model describes this code at one source revision: partial models, finite checks and their stated scope. It is not a reviewed general exposition, and its labels are shown as written, never raised.
Components
| component | label | where |
|---|---|---|
| approximant | partial | approximant |
| ast | partial | ../syntax.json |
| cost | symbolic source derived | invariant |
| descriptant | present | descriptant |
| invariant | partial | invariant |
| tests | executed bounded checks | tests |
Obernants
The typed relations around the forward model: the behaviour complement (what the code never does), the reverse reconstruction (every input compatible with an output) and specialised views.
| id | type | label | where |
|---|---|---|---|
behavior_complement | behavior_complement | partial source derived model | behavior_complement |
reverse_reconstruction | reverse_reconstruction | partial source derived model | reverse_reconstruction |
factory_count | factory_count | partial source derived model | factory_count |
fault_transport | fault_transport | partial source derived model | fault_transport |
prefix_stats | prefix_stats | partial source derived model | prefix_stats |
empty_gate | empty_gate | partial source derived model | empty_gate |
Model text
descriptant
mlab-suite-run-gate
Fresh runtime construction and fail-fast output equivalence.
Epoch 2026-10-31
Half-open source bytes [3525,6795); bound by parent source hash and scoped byte hash. Model covers only this fragment; parent composition explains joins.
approximant
Scoped forward relation
Construct fresh interpreter for each run; gate runs tree then VM from new captures and stops first differing output.
Domain and gap
Source-generated states within resource limits. Categorical relation has no executable percent surrogate.
invariant
Scoped invariant
N run_fs scenarios invoke mk_fs N times, including empty programs.
Cost
Sum of scenario execution plus fresh interpreter/FS creation; gate performs two runs per visited scenario and stops at first mismatch; no time limit.
models
Scoped typed relations
behavior_complement
First output mismatch excludes evaluating remaining scenarios. Equal engine output does not exclude shared erroneous builtin behavior; run_fs excludes default workspace sharing.
reverse_reconstruction
Same outputs can come from shared faulty builtin; first mismatch restricts observed prefix only.
factory_count
N run_fs scenarios invoke mk_fs N times, including empty programs.
fault_transport
Same fault string supplied to tree and VM; vm:add intentionally affects only VM.
prefix_stats
Mismatch scenario contributes totals and static/dynamic counts before break.
empty_gate
Empty input returns all-zero default report.
tests
Evidence scope
Parent selected tests: wave30_synthetic_suite_boundaries, wave30_synthetic_gate_fail_fast. This fragment shares parent syntax and finite checks; no separate test count or complete fragment coverage claim. Assertion-control association and unexecuted paths are in parent tests.md and source-test-map.json.
This page in Markdown → https://md.groupants.elamur.ai/free/en/mova/mlab/src/suite.rs.groupant/run-gate.groupant/