---
id: TST-PFM-INT-612
title: Extension function transport
kind: unit
product_area: platform
module: integrations
revision: 1
status: draft
source_sha:
  services-platform: ad3f6a6582843008ed0f5a17b131878d15829af1
  macroservice-libraries: 54536a441935c6e09fdb7f96f0bec71c52ba4e03
  react-console: baf6dae382d6f41dce976c7f848667ccc37e076f
repository: macroservice-libraries
files:
  - packages/extensions/src/lambda-transport.spec.ts
implements: []
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 test process owns its inputs, fake clocks and any replaced runtime ports.'
test_cases:
  - provenance: test
    source: >-
      macroservice-libraries:packages/extensions/src/lambda-transport.spec.ts#invokes RequestResponse on
      the live alias with the envelope as the payload, and passes an adapter result
  - provenance: test
    source: >-
      macroservice-libraries:packages/extensions/src/lambda-transport.spec.ts#uses the deployment’s
      qualifier
  - provenance: test
    source: >-
      macroservice-libraries:packages/extensions/src/lambda-transport.spec.ts#wraps a bare object as
      succeeded
  - provenance: test
    source: >-
      macroservice-libraries:packages/extensions/src/lambda-transport.spec.ts#answers a function error as
      failed, naming the error type but never its message
  - provenance: test
    source: >-
      macroservice-libraries:packages/extensions/src/lambda-transport.spec.ts#answers a payload carrying
      errorMessage as a function error even without FunctionError
  - provenance: test
    source: >-
      macroservice-libraries:packages/extensions/src/lambda-transport.spec.ts#times out at timeoutMs,
      aborting the call
  - provenance: test
    source: >-
      macroservice-libraries:packages/extensions/src/lambda-transport.spec.ts#answers refused_by_iam when
      access is denied, and unreachable for any other failure
  - provenance: test
    source: >-
      macroservice-libraries:packages/extensions/src/lambda-transport.spec.ts#answers not_available for
      another kind of deployment
  - provenance: test
    source: >-
      macroservice-libraries:packages/extensions/src/lambda-transport.spec.ts#assumes the role with the
      tenant as external id and invokes with its credentials
  - provenance: test
    source: >-
      macroservice-libraries:packages/extensions/src/lambda-transport.spec.ts#keeps the credentials per
      role and tenant until five minutes before they expire
  - provenance: test
    source: >-
      macroservice-libraries:packages/extensions/src/lambda-transport.spec.ts#answers refused_by_iam when
      the role cannot be assumed, and never invokes
  - provenance: test
    source: >-
      macroservice-libraries:packages/extensions/src/lambda-transport.spec.ts#keeps a session name within
      STS’s characters and length
evidence:
  - 'macroservice-libraries:packages/extensions/src/lambda-transport.spec.ts'
---
# Extension function transport

## Verification Boundary

This unit suite exercises extension function transport within the shared package. It records engineering coverage at the pinned revision without claiming a deployed run.

## What This Suite Proves

The source assertions cover the package behavior under controlled inputs. No detailed capability or feature scenario binding is verified in this registration.

## What It Does Not Prove

The suite does not establish deployed authorization, database behavior, provider effects or a complete customer workflow.

## Real Dependencies and Test Doubles

Imported package functions execute against the source-defined fixtures. Runtime ports, clocks and external transport responses remain controlled wherever the suite replaces them.

## Must Not Be Doubled

The shared function under test and its result assertions must execute. Returning an expected answer from a substitute does not prove the package behavior.