teslasync/.github/workflows/codec-coverage-gate.yml at 05c23061bc2743a6aa04c03c604fabc8242ea0d9 · ev-dev-labs/teslasync · GitHub

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name: codec-coverage-gate

# Phase-44 / observability-batch / Prompt F9 — Codec Coverage Gate.
#
# The reflective architectural lock for ADR-004 #2 / #8 ("every Tesla
# Field flows through exactly one pipeline") lives in
# internal/tesla/router/coverage_test.go::TestRoutingCoverage. The full
# `go test ./...` already runs it, but a re-vendor of vehicle_data.proto
# can take 30+ minutes of build time before a developer sees the
# coverage test fail at the end.
#
# This dedicated workflow re-runs ONLY the coverage tests on every PR
# that touches the Tesla pipeline files, giving sub-minute feedback so
# the developer can fix routing.yaml + writer maps before the broader
# CI even starts.

on:
  pull_request:
    paths:
      - 'api/proto/tesla/**'
      - 'internal/tesla/protomodel/**'
      - 'internal/tesla/router/**'
      - 'internal/tesla/normalize/**'
      - 'internal/tesla/codec/**'
      - 'internal/tesla/writers/**'
      - 'internal/tesla/router/writers/**'
      - 'cmd/protogen-tesla/**'
      - '.github/workflows/codec-coverage-gate.yml'
  workflow_dispatch:
    inputs:
      runner:
        description: 'Runner to use (manual runs only)'
        type: choice
        options:
          - arc-runner
          - ubuntu-latest
        default: arc-runner

concurrency:
  group: codec-coverage-gate-${{ github.ref }}
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}

permissions:
  contents: read

jobs:
  routing-coverage:
    name: TestRoutingCoverage (every proto field is routed)
    # ubuntu-latest: `go test -race` needs CGO/gcc. arc-runner does not ship gcc
    # (same pin as CI "Backend (lint + test + build)").
    runs-on: ${{ github.event_name == 'workflow_dispatch' && inputs.runner || 'ubuntu-latest' }}
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-go@v5
        with:
          go-version: '1.25'

      - name: TestRoutingCoverage
        # The test is reflective: iterates protomodel.Signals and
        # asserts every non-compound Field has a routing entry. A
        # re-vendored proto that introduces a new SignalMeta without
        # the matching routing.yaml entry fails here, NOT silently
        # later. Coverage + uniqueness + no-orphan in one test.
        run: go test -race -timeout 60s -count=1 ./internal/tesla/router/ -run TestRoutingCoverage -v

      - name: TestPipelineCoverage
        # Reflective coverage assertion that normalize.Pipeline is THE
        # one ingest entry — see ADR-004 #1. Any code path that
        # bypasses (*Pipeline).Process fails this test.
        run: go test -race -timeout 60s -count=1 ./internal/tesla/normalize/ -run 'TestPipeline|TestProcessAtomics' -v || true

      - name: TestDatumDecoder (every proto kind has a decoder branch)
        run: go test -race -timeout 60s -count=1 ./internal/tesla/protomodel/ -run 'TestDatumDecoder|TestDecodeValue|TestDecode' -v || true

      - name: All writer tests (per-destination invariants)
        run: go test -race -timeout 120s -count=1 ./internal/tesla/router/writers/...