---
id: TST-COM-ORD-150
title: The plain-product participant
kind: unit
product_area: commerce
module: orders
revision: 1
status: draft
source_sha:
  services-commerce: c8b66a98e2490617aec38ba5c8165dd9bd0a8f9b
repository: services-commerce
files:
  - modules/participants/tests/unit/plain/plain-product-participant.spec.js
implements:
  - ATS-COM-ORD-012-07
environment: mock
implementation_state: implemented
latest_result: not-run
latest_run_at: null
latest_run_ref: null
conformance: not-verified
estimated_minutes: 1
isolation: 'The suite owns its in-memory inputs, scripted responses and rendered component state.'
evidence:
  - provenance: test
    source: 'services-commerce:modules/participants/tests/unit/plain/plain-product-participant.spec.js'
    test_cases:
      - 'is a built-in participant of every process, and owns the Accounting Product type in the registry'
      - 'claims nothing for an item: ok, no claim, an attested empty payload and one unit to deliver'
      - 'refuses a payload that says something, invalid, naming the path'
scenario_coverage:
  - scenario: ATS-COM-ORD-012-07
    test_cases:
      - 'is a built-in participant of every process, and owns the Accounting Product type in the registry'
      - 'claims nothing for an item: ok, no claim, an attested empty payload and one unit to deliver'
      - 'refuses a payload that says something, invalid, naming the path'
    scope: >-
      The cited cases exercise the scenario’s listed fixture outcomes; this register makes no verified
      conformance claim.
dependency_evidence:
  provenance: test
  source: 'services-commerce:modules/participants/tests/unit/plain/plain-product-participant.spec.js'
  declared_by_test: 'the registry, the participant, the contract''s schemas. Doubled: nothing.'
---

# The plain-product participant

## Verification Boundary

The unit suite checks the named contract or helper with controlled inputs.

## What This Suite Proves

The registered cases check the plain-product participant with their fixture records and assertions. Scenario bindings name only the examples those cases exercise.

## What It Does Not Prove

A registered file supplies no run result or verified conformance by itself. Local fixtures do not establish deployed cross-service behavior or complete browser journeys.

## Real Dependencies and Test Doubles

Inputs and external responses are controlled in process; this suite establishes no deployed service behavior.

## Must Not Be Doubled

The named contract validation or component behavior under assertion must use its actual implementation.