derive-tests

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Actualizado14 de julio de 2026 a las 09:29

Use only after the lock (gate 2b) is on record for the slice portion, to derive the fidelity ledger and acceptance scenarios from the locked prototype. Triggers when a portion is newly locked or re-locked. Never use before the lock, and never use it to hand-author prototype-fidelity test cases from prose.

Instalación

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Fuente

teklabsdigital

teklabsdigital/x2-method

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SKILL.md

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name	derive-tests
description	Use only after the lock (gate 2b) is on record for the slice portion, to derive the fidelity ledger and acceptance scenarios from the locked prototype. Triggers when a portion is newly locked or re-locked. Never use before the lock, and never use it to hand-author prototype-fidelity test cases from prose.

X2 Derive Tests

Turn the locked portion into its tests. Nothing here is authored from imagination: the locked prototype is the acceptance contract, and the tests are projections of it.

What derives from the lock

The per-slice fidelity ledger (design/ledger/slice-NNN.md): the locked portion's visual atoms, enumerated. The kernel tests it in both directions: every ledger atom renders (exhaustiveness) and nothing renders beyond the ledger (de-fabrication). Until the prototype-to-ledger exporter exists (owed on the claim), the hand-derived ledger is a known second-source risk: derive it at lock time only, from the artifact on disk, never maintain it by hand alongside a moving prototype.
The acceptance scenarios on the e2e floor: the flows the locked portion shows, driven through the real client services against a running server.

The scoping of "no hand-authored test cases"

The ban is precise, per the record's wording fix:

Banned: authoring prototype-fidelity tests ahead of the lock. They derive from it.
Not banned: claim-driven tests: harness scenarios, gate tests, guard tests. These keep the write-it-first, watch-it-fail shape, and they did the most catching in the pilot.

Coverage expectations the exit report will check

Derivation should leave these satisfiable, because slice-exit reports them:

Every public method of every client data service has at least one harness scenario through the real transport, and when the product owns identity, the harness exercises the real sign-in path at least once; minting around auth is setup for other scenarios, never a substitute (INV-10, ruled: the gated harness profile makes this achievable).
A composed-app smoke exists per primary flow: the actual entrypoint, at least one real request (INV-07).
A service method with no surface in the locked portion is a sanctioned UI-unsurfaced state when it is e2e-covered and its boundary is documented (CONF-03). It is never resolved by inventing UI the prototype does not contain; the fidelity tests would fail that fabrication, and they should.

One discipline line

Prove a derived suite can fail: write one assertion wrong, watch it fail, fix it. A suite that cannot fail is not evidence.

Human-turn contract

No gate of its own. A gap between the locked portion and what is derivable is a record-gap question for the human, never an invented criterion.

What this skill must NOT produce

Nothing before the lock is on record.
No criteria the prototype does not show, no edits to the prototype or ledger direction, no implementation code.

implement.

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name	derive-tests
description	Use only after the lock (gate 2b) is on record for the slice portion, to derive the fidelity ledger and acceptance scenarios from the locked prototype. Triggers when a portion is newly locked or re-locked. Never use before the lock, and never use it to hand-author prototype-fidelity test cases from prose.

X2 Derive Tests

Turn the locked portion into its tests. Nothing here is authored from imagination: the locked prototype is the acceptance contract, and the tests are projections of it.

What derives from the lock

The per-slice fidelity ledger (design/ledger/slice-NNN.md): the locked portion's visual atoms, enumerated. The kernel tests it in both directions: every ledger atom renders (exhaustiveness) and nothing renders beyond the ledger (de-fabrication). Until the prototype-to-ledger exporter exists (owed on the claim), the hand-derived ledger is a known second-source risk: derive it at lock time only, from the artifact on disk, never maintain it by hand alongside a moving prototype.
The acceptance scenarios on the e2e floor: the flows the locked portion shows, driven through the real client services against a running server.

The scoping of "no hand-authored test cases"

The ban is precise, per the record's wording fix:

Banned: authoring prototype-fidelity tests ahead of the lock. They derive from it.
Not banned: claim-driven tests: harness scenarios, gate tests, guard tests. These keep the write-it-first, watch-it-fail shape, and they did the most catching in the pilot.

Coverage expectations the exit report will check

Derivation should leave these satisfiable, because slice-exit reports them:

Every public method of every client data service has at least one harness scenario through the real transport, and when the product owns identity, the harness exercises the real sign-in path at least once; minting around auth is setup for other scenarios, never a substitute (INV-10, ruled: the gated harness profile makes this achievable).
A composed-app smoke exists per primary flow: the actual entrypoint, at least one real request (INV-07).
A service method with no surface in the locked portion is a sanctioned UI-unsurfaced state when it is e2e-covered and its boundary is documented (CONF-03). It is never resolved by inventing UI the prototype does not contain; the fidelity tests would fail that fabrication, and they should.

One discipline line

Prove a derived suite can fail: write one assertion wrong, watch it fail, fix it. A suite that cannot fail is not evidence.

Human-turn contract

No gate of its own. A gap between the locked portion and what is derivable is a record-gap question for the human, never an invented criterion.

What this skill must NOT produce

Nothing before the lock is on record.
No criteria the prototype does not show, no edits to the prototype or ledger direction, no implementation code.

implement.

derive-tests

X2 Derive Tests

What derives from the lock

The scoping of "no hand-authored test cases"

Coverage expectations the exit report will check

One discipline line

Human-turn contract

What this skill must NOT produce

Next

X2 Derive Tests

What derives from the lock

The scoping of "no hand-authored test cases"

Coverage expectations the exit report will check

One discipline line

Human-turn contract

What this skill must NOT produce

Next