---
id: TST-PFM-INT-574
title: connection state machine
kind: unit
product_area: platform
module: integrations
revision: 1
status: draft
source_sha:
  services-platform: ad3f6a6582843008ed0f5a17b131878d15829af1
  macroservice-libraries: 54536a441935c6e09fdb7f96f0bec71c52ba4e03
  react-console: baf6dae382d6f41dce976c7f848667ccc37e076f
repository: services-platform
files:
  - modules/integrations/tests/unit/services/connection-state-machine.spec.ts
implements:
  - ATS-PFM-INT-004-04
environment: mock
implementation_state: implemented
latest_result: not-run
latest_run_at: null
latest_run_ref: null
conformance: not-verified
estimated_minutes: 1
isolation: Pure test fixtures owned by the test process.
evidence:
  - 'services-platform:modules/integrations/tests/unit/services/connection-state-machine.spec.ts'
test_cases:
  - source: >-
      services-platform:modules/integrations/tests/unit/services/connection-state-machine.spec.ts#is
      chapter 09 §4.3’s, edge for edge, and the three discards of INTG-M1 (D7)
    provenance: test
  - source: >-
      services-platform:modules/integrations/tests/unit/services/connection-state-machine.spec.ts#never
      leaves disconnected
    provenance: test
  - source: >-
      services-platform:modules/integrations/tests/unit/services/connection-state-machine.spec.ts#names a
      feature a capability no longer has
    provenance: test
  - source: >-
      services-platform:modules/integrations/tests/unit/services/connection-state-machine.spec.ts#names a
      capability no longer supported, with every feature it had
    provenance: test
  - source: >-
      services-platform:modules/integrations/tests/unit/services/connection-state-machine.spec.ts#names
      nothing when nothing was lost
    provenance: test
  - source: >-
      services-platform:modules/integrations/tests/unit/services/connection-state-machine.spec.ts#names
      what was gained, for the audit row
    provenance: test
  - source: >-
      services-platform:modules/integrations/tests/unit/services/connection-state-machine.spec.ts#is a
      degraded connection, whatever its last check
    provenance: test
  - source: >-
      services-platform:modules/integrations/tests/unit/services/connection-state-machine.spec.ts#is a
      failed check within the last day
    provenance: test
  - source: >-
      services-platform:modules/integrations/tests/unit/services/connection-state-machine.spec.ts#is not
      a failed check older than a day
    provenance: test
  - source: >-
      services-platform:modules/integrations/tests/unit/services/connection-state-machine.spec.ts#is not
      a healthy check
    provenance: test
dependency_evidence:
  provenance: test
  source: 'services-platform:modules/integrations/tests/unit/services/connection-state-machine.spec.ts'
  reviewed:
    - Suite introduction
    - Fixture setup
    - Client substitutions
    - Assertions and cleanup
---
# connection state machine

## Verification Boundary

This unit suite exercises connection state machine. Its registration records the executable definition; no run result is asserted.

## What This Suite Proves

The bindings identify the detailed outcomes asserted by this suite. Test-level evidence retains the individual checks, including cases where several suites contribute to one scenario.

## What It Does Not Prove

Pure cases do not establish database constraints, deployed authorization or provider effects.

## Real Dependencies and Test Doubles

The suite evaluates its imported functions with controlled inputs. Its source records the fixture and substitution boundary.

## Must Not Be Doubled

The function under test and its result checks must execute. Replacing them with expected answers provides no proof.