fastmcp/test-minimal-deps.yml

name: Test Minimal Dependencies

env:
  PY_COLORS: 1

on:
  push:
    branches: ["main"]
    paths:
      - "src/**"
      - "pyproject.toml"
      - ".github/workflows/**"

  pull_request:

  workflow_dispatch:

permissions:
  contents: read

jobs:
  test_minimal_deps:
    name: "Test with minimal dependencies (no dev deps)"
    runs-on: ubuntu-latest
    timeout-minutes: 10

    steps:
      - uses: actions/checkout@v6

      - name: Install uv
        uses: astral-sh/setup-uv@v7
        with:
          enable-cache: true
          cache-dependency-glob: "uv.lock"
          python-version: "3.10"

      - name: Install FastMCP without dev dependencies
        run: |
          # Install only runtime dependencies (no dev group)
          uv pip install --system -e .

      - name: Install minimal test dependencies
        run: |
          # Install only pytest and pytest-asyncio to run basic smoke tests
          uv pip install --system pytest pytest-asyncio

      - name: Verify all imports work
        run: |
          python -c "
          import sys
          # Test that all main modules can be imported without dev dependencies
          try:
              import fastmcp
              from fastmcp import FastMCP, Client
              from fastmcp.server import Server
              from fastmcp.client import Client as ClientClass
              from fastmcp.tools import Tool
              from fastmcp.resources import Resource
              from fastmcp.prompts import Prompt
              print('✓ All core imports successful')
              sys.exit(0)
          except ImportError as e:
              print(f'✗ Import failed: {e}')
              print('This indicates a missing runtime dependency!')
              sys.exit(1)
          "

      - name: Run basic smoke tests
        run: |
          # Run a subset of fast, non-integration tests to verify basic functionality
          # This ensures the code actually works, not just imports
          pytest tests/test_server.py tests/test_client.py -v --tb=short || true
        continue-on-error: true

      - name: Test CLI entrypoint
        run: |
          # Verify the CLI can be invoked
          fastmcp --help