ci.yml

# Sentinel CI -- Day 7 Phase 6 (2026-05-24).
#
# Lightweight CI: validates the DVC pipeline DAG and runs the deterministic
# unit test surface. The dataset-dependent stages (train/evaluate/benchmark)
# are intentionally NOT executed -- they need the multi-GB raw data on disk
# and aren't suited to a 6-minute hosted runner. The DVC DAG check ensures
# the pipeline definition stays parseable as src/ evolves; the unit tests
# exercise the production wrapper end-to-end against in-memory fixtures.

name: ci

on:
  push:
    branches: [main, dev]
  pull_request:
    branches: [main, dev]
  workflow_dispatch:

jobs:
  test:
    runs-on: ubuntu-latest
    timeout-minutes: 15

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.11"
          cache: "pip"
          cache-dependency-path: requirements.txt

      - name: Install runtime dependencies
        run: |
          python -m pip install --upgrade pip
          # Install the pinned runtime deps. Day-4 added FastAPI / SQLAlchemy
          # / psycopg2 / httpx into requirements.txt, so a single install
          # covers both training-side and serving-side tests.
          pip install -r requirements.txt
          # Extra test-only deps (pytest plus stdlib-only helpers).
          pip install pytest pytest-asyncio

      - name: Show installed versions
        run: |
          python --version
          pip list | grep -Ei "dvc|mlflow|xgboost|pandas|dask|fastapi|pydantic|streamlit" || true

      - name: Validate DVC pipeline DAG
        run: |
          # `dvc dag` parses dvc.yaml and prints the stage graph -- a cheap
          # way to fail loudly if a stage definition or path drifts.
          dvc dag --quiet || true
          dvc dag

      - name: Run unit tests
        env:
          # Keep test runs hermetic: in-memory sqlite for both MLflow and
          # the telemetry store, no shadow evaluator at app import time.
          MLFLOW_TRACKING_URI: "sqlite:///${{ github.workspace }}/.ci_mlflow.db"
          SENTINEL_DISABLE_SHADOW: "1"
          SENTINEL_BUILD_APP_AT_IMPORT: "0"
        run: |
          pytest tests/ -q -m "not requires_data" --maxfail=1 --disable-warnings