langflow/.github/workflows/smoke-tests.yml

name: Smoke Tests

on:
  pull_request:
    types: [opened, labeled, synchronize, reopened]
  release:
    types: [published]
  workflow_dispatch:
    inputs:
      ref:
        description: 'Git ref to checkout (branch, tag, or commit SHA)'
        required: false
        default: ''
        type: string

jobs:
  backend-smoke-tests:
    if: contains(github.event.pull_request.labels.*.name, 'smoke-test') || github.event_name == 'release' || github.event_name == 'workflow_dispatch'
    name: "Backend Smoke Tests"
    runs-on: ubuntu-latest
    timeout-minutes: 15

    steps:
      - name: Checkout PR
        uses: actions/checkout@v6
        with:
          fetch-depth: 0
          ref: ${{ github.event.inputs.ref || github.ref }}

      - name: Set up Python 3.12
        uses: actions/setup-python@v6
        with:
          python-version: "3.12"

      - name: Install uv
        uses: astral-sh/setup-uv@v6
        with:
          version: "latest"

      - name: Install backend dependencies
        run: |
          uv sync --dev

      - name: Run backend smoke tests (critical tests only)
        run: |
          uv run pytest \
            src/backend/tests/unit/test_database.py \
            src/backend/tests/unit/test_login.py \
            src/backend/tests/unit/api/v1/test_validate.py \
            src/backend/tests/unit/test_endpoints.py \
            src/backend/tests/unit/api/v1/test_flows.py \
            src/backend/tests/unit/test_chat_endpoint.py \
            src/backend/tests/unit/api/v1/test_api_key.py \
            src/backend/tests/unit/api/v1/test_endpoints.py \
            src/backend/tests/unit/components/languagemodels/test_openai_model.py \
            src/backend/tests/unit/components/agents/test_agent_component.py \
            src/backend/tests/unit/services/tracing/test_tracing_service.py \
            -m 'not api_key_required' \
            --tb=short \
            -v
        env:
          LANGFLOW_SUPERUSER: admin
          LANGFLOW_SUPERUSER_PASSWORD: 123456

  lfx-smoke-tests:
    # created a separate label for this since it's a different test suite for LFX components
    if: contains(github.event.pull_request.labels.*.name, 'smoke-test') || github.event_name == 'release' || github.event_name == 'workflow_dispatch'
    name: "LFX Smoke Tests"
    runs-on: ubuntu-latest
    timeout-minutes: 10

    steps:
      - name: Checkout PR
        uses: actions/checkout@v6
        with:
          fetch-depth: 0
          ref: ${{ github.event.inputs.ref || github.ref }}

      - name: Set up Python 3.12
        uses: actions/setup-python@v6
        with:
          python-version: "3.12"

      - name: Install uv
        uses: astral-sh/setup-uv@v6
        with:
          version: "latest"

      - name: Install lfx dependencies (isolated)
        run: |
          cd src/lfx
          uv sync --dev

      - name: Run lfx smoke tests (critical tests only)
        run: |
          cd src/lfx
          uv run pytest \
            tests/unit/graph/test_graph.py \
            tests/unit/custom/component/test_component_instance_attributes.py \
            tests/unit/schema/test_schema_message.py \
            -m 'not api_key_required' \
            --tb=short \
            --maxfail=5 \
            -v
        env:
          LANGFLOW_SUPERUSER: admin
          LANGFLOW_SUPERUSER_PASSWORD: 123456

  frontend-smoke-tests:
    if: contains(github.event.pull_request.labels.*.name, 'smoke-test') || github.event_name == 'release' || github.event_name == 'workflow_dispatch'
    name: "Frontend Smoke Tests"
    runs-on: ubuntu-latest
    timeout-minutes: 10

    steps:
      - name: Checkout PR
        uses: actions/checkout@v6
        with:
          fetch-depth: 0
          ref: ${{ github.event.inputs.ref || github.ref }}

      - name: Setup Node.js
        uses: actions/setup-node@v6
        with:
          node-version: "22"
          cache: "npm"
          cache-dependency-path: src/frontend/package-lock.json

      - name: Install frontend dependencies
        run: |
          cd src/frontend
          npm ci

      - name: Run frontend smoke tests (unit tests only)
        run: |
          cd src/frontend
          CI=true npx jest --ci --watchAll=false --passWithNoTests
        env:
          NODE_ENV: test

  comment-results:
    if: always() && (contains(github.event.pull_request.labels.*.name, 'smoke-test') || github.event_name == 'release' || github.event_name == 'workflow_dispatch')
    name: "Comment Results"
    needs: [backend-smoke-tests, lfx-smoke-tests, frontend-smoke-tests]
    runs-on: ubuntu-latest

    steps:
      - name: Comment on PR with results
        uses: actions/github-script@v8
        with:
          script: |
            const backendStatus = '${{ needs.backend-smoke-tests.result }}';
            const lfxStatus = '${{ needs.lfx-smoke-tests.result }}';
            const frontendStatus = '${{ needs.frontend-smoke-tests.result }}';
            
            const overallSuccess = backendStatus === 'success' && lfxStatus === 'success' && frontendStatus === 'success';
            const emoji = overallSuccess ? '✅' : '❌';
            const status = overallSuccess ? 'passed' : 'failed';
            
            const backendEmoji = backendStatus === 'success' ? '✅' : '❌';
            const lfxEmoji = lfxStatus === 'success' ? '✅' : '❌';
            const frontendEmoji = frontendStatus === 'success' ? '✅' : '❌';

            const comment = `${emoji} **Smoke tests ${status}**

            Critical functionality validated:

            - ${backendEmoji} **Backend**: 11 essential test files (database, auth, API endpoints, flows, components)
            - ${lfxEmoji} **LFX**: Graph tests (langflow execution) - runs in isolation
            - ${frontendEmoji} **Frontend**: Unit tests only (components, utilities)
            
            **Coverage**: Core functionality without external dependencies

            View details in the [Actions tab](https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}).`;

            // Only comment on PRs, not on releases or manual runs
            if (context.payload.pull_request) {
              await github.rest.issues.createComment({
                issue_number: context.payload.pull_request.number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body: comment
              });
            } else {
              console.log('Smoke test results:', comment);
            }