---
title: "world-school-bench — Mova code model"
description: "Mova code model of world/tests/school_bench.rs: components with their labels, obernants and the model text."
url: "https://groupants.elamur.ai/free/en/mova/world/tests/school_bench.rs.groupant/"
---
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# world-school-bench

The groupant beside world/tests/school_bench.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

- **kind:** groupant
- **status:** partial source bound model
- **source:** [`world/tests/school_bench.rs`](https://github.com/ElamurAI/mova-free/blob/main/world/tests/school_bench.rs)
- **source SHA-256:** `8c40dc25bc4d71e4…`
- **repository folder:** [`world/tests/school_bench.rs.groupant`](https://github.com/ElamurAI/mova-free/tree/main/world/tests/school_bench.rs.groupant)
- **repository commit:** `855da7bd4a7b`

> **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](#approximant) |
| **ast** | partial | `syntax.json` |
| **composition** | partial | [composition](#composition) |
| **cost** | partial | [Cost](#cost) |
| **descriptant** | present | [descriptant](#descriptant) |
| **invariant** | partial | `model.md` |
| **tests** | bounded checks partial scope | [tests](#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](#behavior-complement) |
| `reverse_reconstruction` | reverse_reconstruction | partial source derived model | [reverse_reconstruction](#reverse-reconstruction) |
| `cadence_claim` | cadence_claim | partial source derived model | [cadence_claim](#cadence-claim) |
| `publication_claim` | publication_claim | partial source derived model | [publication_claim](#publication-claim) |
| `command_isolation` | command_isolation | partial source derived model | [command_isolation](#command-isolation) |
| `zero_round` | zero_round | partial source derived model | [zero_round](#zero-round) |

## Parts

- [world-school-bench-scratch](https://md.groupants.elamur.ai/free/en/mova/world/tests/school_bench.rs.groupant/scratch.groupant/)

## Model text


### descriptant

#### world-school-bench

Scratch creates temp root; command sets cpu, hot/bench roots, missing model and removes state/prag flags. Legacy plan requests rounds1/5/20 and validates tiers/counts; failed-probe asserts preserved published sentinel and absent cadence/running markers plus round0 rejection. New helper test checks env, no args/no bench root and cleanup without any process.

##### Modeling epoch — 2026-10-31

Read full assigned source before editing; prospective predictions retained in external wave29 receipts. Stored/live/parser-dependent test paths are excluded from execution. Evidence is limited to named bounded fixtures; registration is partial modeling. Production behavior unchanged; only inline synthetic tests added to four assigned sources.

### approximant

#### Forward relation

Scratch creates temp root; command sets cpu, hot/bench roots, missing model and removes state/prag flags. Legacy plan requests rounds1/5/20 and validates tiers/counts; failed-probe asserts preserved published sentinel and absent cadence/running markers plus round0 rejection. New helper test checks env, no args/no bench root and cleanup without any process.

##### Domain and resource limits

Finite valid structures and allocation-success executions under the branch conditions in models.md; integer overflow is outside measured fixtures. Exact categorical relations have no supplied percent surrogate. Macro expansion, arbitrary model quality and external effects are not inferred from syntax.

### invariant

## Invariant

New test never creates bench root/loads school; temp sentinel removed at scope exit. Legacy expected313 tests/112 exams specific to course, not general schema.

### Cost

Fixed command/temp operations only; actual planner/probe costs unmeasured; no benchmark timing.

### composition

#### Composition

Scoped children: scratch. Scratch creates temp root; command sets cpu, hot/bench roots, missing model and removes state/prag flags. Legacy plan requests rounds1/5/20 and validates tiers/counts; failed-probe asserts preserved published sentinel and absent cadence/running markers plus round0 rejection. New helper test checks env, no args/no bench root and cleanup without any process. Other functions and test additions are modeled only at this parent. bAbI Story and command World have different representations: command-language fixtures do not certify the UD parser adapter. StepGame lexical/load helpers connect directly to tests03; CLI helpers construct a separate world process but this wave does not spawn it. No composition-wide percent accuracy follows.

### models

### behavior_complement

Exclude configured bench/hot paths differing from Scratch derivations or explicit retained state/prag flags. Legacy assertions exclude failed-probe publication/cadence changes but were not executed. Cleanup may fail silently.

### reverse_reconstruction

Full plan tier/count does not recover course identities; preserved publication after failure admits many failure stages. Helper env reconstructs path derivations but not external command outcome.

### cadence_claim

Legacy round1/5/20 quick/medium/full unexecuted.

### publication_claim

Legacy unchanged reference and absent markers not crash-atomicity proof.

### command_isolation

CPU explicit; bench/hot share temp parent; missing.bin absent.

### zero_round

Legacy only checks failed status for round0, no precedence/diagnostic.

### tests

#### Bounded checks

Named checks associated with this source (not every fragment branch):

- wave29_bench_command_isolation_and_cleanup_without_spawn

17 unique named tests in total passed twice debug and twice release; sorted named outcomes equal across all four runs. Four compiled controls cover bAbI identity, StepGame tie ordering, parser-command state removal and bench-command CPU selection; each exits101 at a runtime assertion, exact source restored then positive exit0. Other sources have finite adversarial fixtures but no separately compiled mutant.

CLI integration coverage is command construction and temporary cleanup only; legacy school/model/cadence paths are not executed. No speed benchmark, GPU, live teacher, datasets or held-out replay.

Limits:

- Only command/temp helper executed; no plan/cadence/publication runtime claim
- No corpus/model/full-school; executable percent surrogate unsupported

External receipt root: $MOVA_DATA/runs/octopus-wave29-worldeval-2026-10-31.