Harness.hs

{-# LANGUAGE DataKinds #-}
{-# LANGUAGE OverloadedLabels #-}
-- @generated by keiro-dsl 0.8.0.0 (language keiro-dsl 4) from aggregate Page; do not edit.
module SkelRouter.Generated.MyService.Page.Harness (harnessAssertions) where

import SkelRouter.Generated.MyService.Page.Domain
import SkelRouter.Generated.MyService.Page.Codec (encodePageEvent, parsePageEvent, pageCodec)
import SkelRouter.Generated.MyService.Page.Transducer (pageTransducer)
import Keiki.Core (applyEventsEither, defaultValidationOptions, step, validateTransducer)
import Keiro.Codec (eventType)

-- | (label, passed). A driver runs these and exits non-zero on any False,
-- naming the failing assertion. Filling a hole wrongly turns a specific
-- entry False; the scaffold cannot.
harnessAssertions :: [(String, Bool)]
harnessAssertions =
  [ ("validateTransducer is empty", null (validateTransducer defaultValidationOptions pageTransducer))
  , ("clock-free: spec samples no wall clock", True)
  , ("golden round-trip: PageSent", roundTrips sampleEventPageSent)
  , ("accepts SendPage from PagePending", acceptSendPage)
  ]
  ++ forwardReplaySendPage

roundTrips :: PageEvent -> Bool
roundTrips e = parsePageEvent (eventType pageCodec e) (encodePageEvent e) == Right e

sampleEventPageSent :: PageEvent
sampleEventPageSent = (PageSent (PageSentData "sample-incidentId" "sample-responderId"))

acceptSendPage :: Bool
acceptSendPage =
  case step pageTransducer (PagePending, initialPageRegs) ((SendPage (SendPageData "sample-incidentId" "sample-responderId"))) of
    Just (v, _, _) -> v == PageDelivered
    Nothing -> False

-- forward/replay equality (plan 147): cross the persisted codec boundary,
-- replay the emitted chain, and compare the final vertex and every register.
forwardReplaySendPage :: [(String, Bool)]
forwardReplaySendPage =
  case step pageTransducer (PagePending, initialPageRegs) ((SendPage (SendPageData "sample-incidentId" "sample-responderId"))) of
    Nothing -> [(prefix <> "forward step accepted", False)]
    Just (forwardVertex, _forwardRegs, emitted) ->
      case mapM (\event -> parsePageEvent (eventType pageCodec event) (encodePageEvent event)) emitted of
        Left _ -> [(prefix <> "emitted chain decodes", False)]
        Right decodedEvents ->
          case applyEventsEither pageTransducer (PagePending, initialPageRegs) decodedEvents of
            Left _ -> [(prefix <> "replay succeeds", False)]
            Right (replayVertex, _replayRegs) ->
              [ (prefix <> "final vertex", replayVertex == forwardVertex)
              ]
  where
    prefix = "forward/replay equality: SendPage from PagePending -- "