---
id: TST-COM-CAT-133
title: Promotion Parts Rules Verification
kind: unit
product_area: commerce
module: catalog
revision: 1
status: draft
product_intent: proposed
source_sha:
  services-commerce: c8b66a98e2490617aec38ba5c8165dd9bd0a8f9b
repository: services-commerce
files:
  - modules/promotions/tests/unit/promotions/promotion-parts-rules.spec.js
implements:
  - ATS-COM-CAT-014-02
  - ATS-COM-CAT-014-05
environment: mock
implementation_state: implemented
latest_result: not-run
latest_run_at: null
latest_run_ref: null
conformance: not-verified
estimated_minutes: 1
isolation: In-process fixtures; any shared port replacement is restored by the suite.
binding_evidence:
  - scenario: ATS-COM-CAT-014-02
    source: >-
      services-commerce:modules/promotions/tests/unit/promotions/promotion-parts-rules.spec.js#refuses
      parts together with a promotion-level kind
  - scenario: ATS-COM-CAT-014-02
    source: >-
      services-commerce:modules/promotions/tests/unit/promotions/promotion-parts-rules.spec.js#refuses
      twenty-one parts, 400 promotion_invalid
  - scenario: ATS-COM-CAT-014-02
    source: >-
      services-commerce:modules/promotions/tests/unit/promotions/promotion-parts-rules.spec.js#refuses
      percent_off as the promotion’s own kind without parts
  - scenario: ATS-COM-CAT-014-02
    source: >-
      services-commerce:modules/promotions/tests/unit/promotions/promotion-parts-rules.spec.js#refuses
      a percentage above 100 %, naming the part
  - scenario: ATS-COM-CAT-014-02
    source: >-
      services-commerce:modules/promotions/tests/unit/promotions/promotion-parts-rules.spec.js#refuses
      a per-unit part without a currency
  - scenario: ATS-COM-CAT-014-05
    source: >-
      services-commerce:modules/promotions/tests/unit/promotions/promotion-parts-rules.spec.js#admits
      the rule on an automatic promotion
evidence:
  - 'services-commerce:modules/promotions/tests/unit/promotions/promotion-parts-rules.spec.js'
  - >-
    services-commerce:modules/promotions/tests/unit/promotions/promotion-parts-rules.spec.js#Real:
    the rules, the workflow's criteria check over a registry.
  - >-
    services-commerce:modules/promotions/tests/unit/promotions/promotion-parts-rules.spec.js#Doubled:
    the area provider (a fake that finds one problem). proves_controls: [TC-PI-001]
execution_constraints:
  - No execution is performed in this documentation back-fill.
verification_boundary: >-
  Bindings identify the existing assertions contributing to each scenario; several suites can
  jointly cover a compound scenario.
---

# Promotion Parts Rules Verification

## Verification Boundary

The suite exercises the isolated rule, calculation or adapter with its supplied fixtures. It does not establish storage or distributed behaviour.

## What This Suite Proves

The promotion parts rules assertions contribute to the scenarios listed in the register. Each binding retains its exact source test anchor so a reviewer can distinguish an individual contribution from the complete scenario.

## What It Does Not Prove

The register records source inspection only. It establishes no run result, delivery qualification or Product approval.

## Real Dependencies and Test Doubles

The production function under test is real. Its collaborators are supplied as fixtures or replaced ports where the suite declares them.

## Must Not Be Doubled

Keep the production function under test and its refusal or arithmetic result real. Replacing that function with a fixture removes the claimed proof.