name: Backend tests

# Runs the backend pytest suite (mirrors `bash scripts/test.sh`) on every PR
# and every push to main. Tests are fully self-contained — they stub the
# Anthropic API and the Claude Code CLI — so no secrets or services are
# required.

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

concurrency:
  group: tests-${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}

jobs:
  pytest:
    name: pytest
    runs-on: ubuntu-latest
    timeout-minutes: 15

    steps:
      - uses: actions/checkout@v4

      - name: Setup Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.13'
          cache: 'pip'
          cache-dependency-path: |
            backend/requirements.txt
            backend/requirements-dev.txt

      - name: Install backend deps
        # Default cwd in GH Actions is the repo root, which is required for
        # the `-e ./debugger` line in backend/requirements-dev.txt to resolve.
        run: |
          python -m pip install --upgrade pip
          python -m pip install \
            -r backend/requirements.txt \
            -r backend/requirements-dev.txt

      - name: Run pytest with coverage
        run: |
          python -m pytest backend/tests/ -v \
            --cov=backend \
            --cov-report=term-missing \
            --cov-report=html:backend/coverage_html \
            --cov-report=xml:backend/coverage.xml

      - name: Coverage summary
        if: always()
        run: |
          echo "## Backend coverage" >> "$GITHUB_STEP_SUMMARY"
          echo '```' >> "$GITHUB_STEP_SUMMARY"
          python -m coverage report >> "$GITHUB_STEP_SUMMARY" || true
          echo '```' >> "$GITHUB_STEP_SUMMARY"

      - name: Upload coverage artifacts
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: backend-coverage
          path: |
            backend/coverage_html
            backend/coverage.xml
          if-no-files-found: ignore