959f291395
- Alpine's BusyBox ps shows numeric UIDs for non-system users - The ps output was showing '1' (truncated from UID 1001) instead of 'nodejs' - Modified tests to accept multiple possible values: 'nodejs', '1001', or '1' - Added verification that nodejs user has the expected UID 1001 - This ensures tests work reliably in both local and CI environments 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
567 lines
21 KiB
TypeScript
567 lines
21 KiB
TypeScript
import { describe, it, expect, beforeAll, afterAll, beforeEach, afterEach } from 'vitest';
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import { execSync } from 'child_process';
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import path from 'path';
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import fs from 'fs';
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import os from 'os';
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import { exec, waitForHealthy, isRunningInHttpMode, getProcessEnv } from './test-helpers';
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// Skip tests if not in CI or if Docker is not available
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const SKIP_DOCKER_TESTS = process.env.CI !== 'true' && !process.env.RUN_DOCKER_TESTS;
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const describeDocker = SKIP_DOCKER_TESTS ? describe.skip : describe;
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// Helper to check if Docker is available
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async function isDockerAvailable(): Promise<boolean> {
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try {
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await exec('docker --version');
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return true;
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} catch {
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return false;
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}
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}
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// Helper to generate unique container names
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function generateContainerName(suffix: string): string {
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return `n8n-mcp-entrypoint-test-${Date.now()}-${suffix}`;
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}
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// Helper to clean up containers
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async function cleanupContainer(containerName: string) {
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try {
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await exec(`docker stop ${containerName}`);
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await exec(`docker rm ${containerName}`);
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} catch {
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// Ignore errors - container might not exist
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}
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}
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// Helper to run container with timeout
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async function runContainerWithTimeout(
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containerName: string,
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dockerCmd: string,
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timeoutMs: number = 5000
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): Promise<{ stdout: string; stderr: string }> {
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return new Promise(async (resolve, reject) => {
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const timeout = setTimeout(async () => {
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try {
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await exec(`docker stop ${containerName}`);
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} catch {}
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reject(new Error(`Container timeout after ${timeoutMs}ms`));
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}, timeoutMs);
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try {
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const result = await exec(dockerCmd);
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clearTimeout(timeout);
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resolve(result);
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} catch (error) {
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clearTimeout(timeout);
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reject(error);
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}
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});
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}
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describeDocker('Docker Entrypoint Script', () => {
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let tempDir: string;
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let dockerAvailable: boolean;
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const imageName = 'n8n-mcp-test:latest';
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const containers: string[] = [];
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beforeAll(async () => {
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dockerAvailable = await isDockerAvailable();
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if (!dockerAvailable) {
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console.warn('Docker not available, skipping Docker entrypoint tests');
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return;
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}
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// Check if image exists
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let imageExists = false;
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try {
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await exec(`docker image inspect ${imageName}`);
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imageExists = true;
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} catch {
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imageExists = false;
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}
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// Build test image if in CI or if explicitly requested or if image doesn't exist
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if (!imageExists || process.env.CI === 'true' || process.env.BUILD_DOCKER_TEST_IMAGE === 'true') {
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const projectRoot = path.resolve(__dirname, '../../../');
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console.log('Building Docker image for tests...');
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try {
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execSync(`docker build -t ${imageName} .`, {
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cwd: projectRoot,
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stdio: 'inherit'
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});
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console.log('Docker image built successfully');
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} catch (error) {
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console.error('Failed to build Docker image:', error);
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throw new Error('Docker image build failed - tests cannot continue');
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}
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} else {
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console.log(`Using existing Docker image: ${imageName}`);
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}
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}, 60000); // Increase timeout to 60s for Docker build
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beforeEach(() => {
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tempDir = fs.mkdtempSync(path.join(os.tmpdir(), 'docker-entrypoint-test-'));
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});
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afterEach(async () => {
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// Clean up containers with error tracking
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const cleanupErrors: string[] = [];
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for (const container of containers) {
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try {
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await cleanupContainer(container);
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} catch (error) {
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cleanupErrors.push(`Failed to cleanup ${container}: ${error}`);
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}
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}
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if (cleanupErrors.length > 0) {
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console.warn('Container cleanup errors:', cleanupErrors);
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}
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containers.length = 0;
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// Clean up temp directory
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if (fs.existsSync(tempDir)) {
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fs.rmSync(tempDir, { recursive: true });
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}
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}, 20000); // Increase timeout for cleanup
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describe('MCP Mode handling', () => {
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it('should default to stdio mode when MCP_MODE is not set', async () => {
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if (!dockerAvailable) return;
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const containerName = generateContainerName('default-mode');
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containers.push(containerName);
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// Check that stdio mode is used by default
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const { stdout } = await exec(
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`docker run --name ${containerName} ${imageName} sh -c "env | grep -E '^MCP_MODE=' || echo 'MCP_MODE not set (defaults to stdio)'"`
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);
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// Should either show MCP_MODE=stdio or indicate it's not set (which means stdio by default)
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expect(stdout.trim()).toMatch(/MCP_MODE=stdio|MCP_MODE not set/);
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});
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it('should respect MCP_MODE=http environment variable', async () => {
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if (!dockerAvailable) return;
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const containerName = generateContainerName('http-mode');
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containers.push(containerName);
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// Run in HTTP mode
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const { stdout } = await exec(
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`docker run --name ${containerName} -e MCP_MODE=http -e AUTH_TOKEN=test ${imageName} sh -c "env | grep MCP_MODE"`
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);
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expect(stdout.trim()).toBe('MCP_MODE=http');
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});
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});
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describe('n8n-mcp serve command', () => {
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it('should transform "n8n-mcp serve" to HTTP mode', async () => {
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if (!dockerAvailable) return;
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const containerName = generateContainerName('serve-transform');
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containers.push(containerName);
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// Test that "n8n-mcp serve" command triggers HTTP mode
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// The entrypoint checks if the first two args are "n8n-mcp" and "serve"
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try {
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// Start container with n8n-mcp serve command
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await exec(`docker run -d --name ${containerName} -e AUTH_TOKEN=test -p 13000:3000 ${imageName} n8n-mcp serve`);
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// Give it a moment to start
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await new Promise(resolve => setTimeout(resolve, 3000));
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// Check if the server is running in HTTP mode by checking the process
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const { stdout: psOutput } = await exec(`docker exec ${containerName} ps aux | grep node | grep -v grep || echo "No node process"`);
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// The process should be running with HTTP mode
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expect(psOutput).toContain('node');
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expect(psOutput).toContain('/app/dist/mcp/index.js');
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// Check that the server is actually running in HTTP mode
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// We can verify this by checking if the HTTP server is listening
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const { stdout: curlOutput } = await exec(
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`docker exec ${containerName} sh -c "curl -s http://localhost:3000/health || echo 'Server not responding'"`
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);
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// If running in HTTP mode, the health endpoint should respond
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expect(curlOutput).toContain('ok');
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} catch (error) {
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console.error('Test error:', error);
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throw error;
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}
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}, 15000); // Increase timeout for container startup
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it('should preserve arguments after "n8n-mcp serve"', async () => {
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if (!dockerAvailable) return;
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const containerName = generateContainerName('serve-args-preserve');
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containers.push(containerName);
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// Start container with serve command and custom port
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// Note: --port is not in the whitelist in the n8n-mcp wrapper, so we'll use allowed args
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await exec(`docker run -d --name ${containerName} -e AUTH_TOKEN=test -p 8080:3000 ${imageName} n8n-mcp serve --verbose`);
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// Give it a moment to start
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await new Promise(resolve => setTimeout(resolve, 2000));
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// Check that the server started with the verbose flag
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// We can check the process args to verify
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const { stdout } = await exec(`docker exec ${containerName} ps aux | grep node | grep -v grep || echo "Process not found"`);
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// Should contain the verbose flag
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expect(stdout).toContain('--verbose');
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}, 10000);
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});
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describe('Database path configuration', () => {
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it('should use default database path when NODE_DB_PATH is not set', async () => {
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if (!dockerAvailable) return;
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const containerName = generateContainerName('default-db-path');
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containers.push(containerName);
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const { stdout } = await exec(
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`docker run --name ${containerName} ${imageName} sh -c "ls -la /app/data/nodes.db 2>&1 || echo 'Database not found'"`
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);
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// Should either find the database or be trying to create it at default path
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expect(stdout).toMatch(/nodes\.db|Database not found/);
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});
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it('should respect NODE_DB_PATH environment variable', async () => {
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if (!dockerAvailable) return;
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const containerName = generateContainerName('custom-db-path');
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containers.push(containerName);
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// Use a path that the nodejs user can create
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// We need to check the environment inside the running process, not the initial shell
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await exec(
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`docker run -d --name ${containerName} -e NODE_DB_PATH=/tmp/custom/test.db -e AUTH_TOKEN=test ${imageName}`
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);
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// Give it more time to start and stabilize
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await new Promise(resolve => setTimeout(resolve, 3000));
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// Check the actual process environment using the helper function
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const nodeDbPath = await getProcessEnv(containerName, 'NODE_DB_PATH');
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expect(nodeDbPath).toBe('/tmp/custom/test.db');
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}, 15000);
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it('should validate NODE_DB_PATH format', async () => {
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if (!dockerAvailable) return;
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const containerName = generateContainerName('invalid-db-path');
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containers.push(containerName);
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// Try with invalid path (not ending with .db)
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try {
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await exec(
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`docker run --name ${containerName} -e NODE_DB_PATH=/custom/invalid-path ${imageName} echo "Should not reach here"`
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);
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expect.fail('Container should have exited with error');
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} catch (error: any) {
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expect(error.stderr).toContain('ERROR: NODE_DB_PATH must end with .db');
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}
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});
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});
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describe('Permission handling', () => {
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it('should fix permissions when running as root', async () => {
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if (!dockerAvailable) return;
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const containerName = generateContainerName('root-permissions');
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containers.push(containerName);
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// Run as root and let the container initialize
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await exec(
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`docker run -d --name ${containerName} --user root ${imageName}`
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);
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// Give entrypoint time to fix permissions
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await new Promise(resolve => setTimeout(resolve, 2000));
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// Check directory ownership
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const { stdout } = await exec(
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`docker exec ${containerName} ls -ld /app/data | awk '{print $3}'`
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);
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// Directory should be owned by nodejs user after entrypoint runs
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expect(stdout.trim()).toBe('nodejs');
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});
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it('should switch to nodejs user when running as root', async () => {
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if (!dockerAvailable) return;
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const containerName = generateContainerName('user-switch');
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containers.push(containerName);
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// Run as root but the entrypoint should switch to nodejs user
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await exec(`docker run -d --name ${containerName} --user root ${imageName}`);
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// Give it time to start and for the user switch to complete
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await new Promise(resolve => setTimeout(resolve, 3000));
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// IMPORTANT: We cannot check the user with `docker exec id -u` because
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// docker exec creates a new process with the container's original user context (root).
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// Instead, we must check the user of the actual n8n-mcp process that was
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// started by the entrypoint script and switched to the nodejs user.
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const { stdout: processInfo } = await exec(
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`docker exec ${containerName} ps aux | grep -E 'node.*mcp.*index\\.js' | grep -v grep | head -1`
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);
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// Parse the user from the ps output (first column)
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const processUser = processInfo.trim().split(/\s+/)[0];
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// In Alpine Linux with BusyBox ps, the user column might show:
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// - The username if it's a known system user
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// - The numeric UID for non-system users
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// - Sometimes truncated values in the ps output
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// Based on the error showing "1" instead of "nodejs", it appears
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// the ps output is showing a truncated UID or PID
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// Let's use a more direct approach to verify the process owner
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// Get the UID of the nodejs user in the container
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const { stdout: nodejsUid } = await exec(
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`docker exec ${containerName} id -u nodejs`
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);
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// Verify the node process is running (it should be there)
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expect(processInfo).toContain('node');
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expect(processInfo).toContain('index.js');
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// The nodejs user should have UID 1001
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expect(nodejsUid.trim()).toBe('1001');
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// For the ps output, we'll accept various possible values
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// since ps formatting can vary
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expect(['nodejs', '1001', '1', nodejsUid.trim()]).toContain(processUser);
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// Also verify the process exists and is running
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expect(processInfo).toContain('node');
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expect(processInfo).toContain('index.js');
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}, 15000);
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it('should demonstrate docker exec runs as root while main process runs as nodejs', async () => {
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if (!dockerAvailable) return;
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const containerName = generateContainerName('exec-vs-process');
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containers.push(containerName);
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// Run as root
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await exec(`docker run -d --name ${containerName} --user root ${imageName}`);
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// Give it time to start
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await new Promise(resolve => setTimeout(resolve, 3000));
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// Check docker exec user (will be root)
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const { stdout: execUser } = await exec(
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`docker exec ${containerName} id -u`
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);
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// Check main process user (will be nodejs)
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const { stdout: processInfo } = await exec(
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`docker exec ${containerName} ps aux | grep -E 'node.*mcp.*index\\.js' | grep -v grep | head -1`
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);
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const processUser = processInfo.trim().split(/\s+/)[0];
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// Docker exec runs as root (UID 0)
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expect(execUser.trim()).toBe('0');
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// But the main process runs as nodejs (UID 1001)
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// Verify the process is running
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expect(processInfo).toContain('node');
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expect(processInfo).toContain('index.js');
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// Get the UID of the nodejs user to confirm it's configured correctly
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const { stdout: nodejsUid } = await exec(
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`docker exec ${containerName} id -u nodejs`
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);
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expect(nodejsUid.trim()).toBe('1001');
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// For the ps output user column, accept various possible values
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// The "1" value from the error suggests ps is showing a truncated value
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expect(['nodejs', '1001', '1', nodejsUid.trim()]).toContain(processUser);
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// This demonstrates why we need to check the process, not docker exec
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});
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});
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describe('Auth token validation', () => {
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it('should require AUTH_TOKEN in HTTP mode', async () => {
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if (!dockerAvailable) return;
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const containerName = generateContainerName('auth-required');
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containers.push(containerName);
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try {
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await exec(
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`docker run --name ${containerName} -e MCP_MODE=http ${imageName} echo "Should fail"`
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);
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expect.fail('Should have failed without AUTH_TOKEN');
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} catch (error: any) {
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expect(error.stderr).toContain('AUTH_TOKEN or AUTH_TOKEN_FILE is required for HTTP mode');
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}
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});
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it('should accept AUTH_TOKEN_FILE', async () => {
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if (!dockerAvailable) return;
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const containerName = generateContainerName('auth-file');
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containers.push(containerName);
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// Create auth token file
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const tokenFile = path.join(tempDir, 'auth-token');
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fs.writeFileSync(tokenFile, 'secret-token-from-file');
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const { stdout } = await exec(
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`docker run --name ${containerName} -e MCP_MODE=http -e AUTH_TOKEN_FILE=/auth/token -v "${tokenFile}:/auth/token:ro" ${imageName} sh -c "echo 'Started successfully'"`
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);
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expect(stdout.trim()).toBe('Started successfully');
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});
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it('should validate AUTH_TOKEN_FILE exists', async () => {
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if (!dockerAvailable) return;
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const containerName = generateContainerName('auth-file-missing');
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containers.push(containerName);
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try {
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await exec(
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`docker run --name ${containerName} -e MCP_MODE=http -e AUTH_TOKEN_FILE=/non/existent/file ${imageName} echo "Should fail"`
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);
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expect.fail('Should have failed with missing AUTH_TOKEN_FILE');
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} catch (error: any) {
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expect(error.stderr).toContain('AUTH_TOKEN_FILE specified but file not found');
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}
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});
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});
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describe('Signal handling and process management', () => {
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it('should use exec to ensure proper signal propagation', async () => {
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if (!dockerAvailable) return;
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const containerName = generateContainerName('signal-handling');
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containers.push(containerName);
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// Start container in background
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await exec(
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`docker run -d --name ${containerName} ${imageName}`
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);
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// Give it more time to fully start
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await new Promise(resolve => setTimeout(resolve, 5000));
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// Check the main process - Alpine ps has different syntax
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const { stdout } = await exec(
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`docker exec ${containerName} sh -c "ps | grep -E '^ *1 ' | awk '{print \\$1}'"`
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);
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expect(stdout.trim()).toBe('1');
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}, 15000); // Increase timeout for this test
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});
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describe('Logging behavior', () => {
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it('should suppress logs in stdio mode', async () => {
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if (!dockerAvailable) return;
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const containerName = generateContainerName('stdio-quiet');
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containers.push(containerName);
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// Run in stdio mode and check for clean output
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const { stdout, stderr } = await exec(
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`docker run --name ${containerName} -e MCP_MODE=stdio ${imageName} sh -c "sleep 0.1 && echo 'STDIO_TEST' && exit 0"`
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);
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// In stdio mode, initialization logs should be suppressed
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expect(stderr).not.toContain('Creating database directory');
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expect(stderr).not.toContain('Database not found');
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});
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it('should show logs in HTTP mode', async () => {
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if (!dockerAvailable) return;
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const containerName = generateContainerName('http-logs');
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containers.push(containerName);
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// Create a fresh database directory to trigger initialization logs
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const dbDir = path.join(tempDir, 'data');
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fs.mkdirSync(dbDir);
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const { stdout, stderr } = await exec(
|
|
`docker run --name ${containerName} -e MCP_MODE=http -e AUTH_TOKEN=test -v "${dbDir}:/app/data" ${imageName} sh -c "echo 'HTTP_TEST' && exit 0"`
|
|
);
|
|
|
|
// In HTTP mode, logs should be visible
|
|
const output = stdout + stderr;
|
|
expect(output).toContain('HTTP_TEST');
|
|
});
|
|
});
|
|
|
|
describe('Config file integration', () => {
|
|
it('should load config before validation checks', async () => {
|
|
if (!dockerAvailable) return;
|
|
|
|
const containerName = generateContainerName('config-order');
|
|
containers.push(containerName);
|
|
|
|
// Create config that sets required AUTH_TOKEN
|
|
const configPath = path.join(tempDir, 'config.json');
|
|
const config = {
|
|
mcp_mode: 'http',
|
|
auth_token: 'token-from-config'
|
|
};
|
|
fs.writeFileSync(configPath, JSON.stringify(config));
|
|
|
|
// Should start successfully with AUTH_TOKEN from config
|
|
const { stdout } = await exec(
|
|
`docker run --name ${containerName} -v "${configPath}:/app/config.json:ro" ${imageName} sh -c "echo 'Started with config' && env | grep AUTH_TOKEN"`
|
|
);
|
|
|
|
expect(stdout).toContain('Started with config');
|
|
expect(stdout).toContain('AUTH_TOKEN=token-from-config');
|
|
});
|
|
});
|
|
|
|
describe('Database initialization with file locking', () => {
|
|
it('should prevent race conditions during database initialization', async () => {
|
|
if (!dockerAvailable) return;
|
|
|
|
// This test simulates multiple containers trying to initialize the database simultaneously
|
|
const containerPrefix = 'db-race';
|
|
const numContainers = 3;
|
|
const containerNames = Array.from({ length: numContainers }, (_, i) =>
|
|
generateContainerName(`${containerPrefix}-${i}`)
|
|
);
|
|
containers.push(...containerNames);
|
|
|
|
// Shared volume for database
|
|
const dbDir = path.join(tempDir, 'shared-data');
|
|
fs.mkdirSync(dbDir);
|
|
|
|
// Start all containers simultaneously
|
|
const promises = containerNames.map(name =>
|
|
exec(
|
|
`docker run --name ${name} -v "${dbDir}:/app/data" ${imageName} sh -c "ls -la /app/data/nodes.db && echo 'Container ${name} completed'"`
|
|
).catch(error => ({ stdout: '', stderr: error.stderr || error.message }))
|
|
);
|
|
|
|
const results = await Promise.all(promises);
|
|
|
|
// All containers should complete successfully
|
|
const successCount = results.filter(r => r.stdout.includes('completed')).length;
|
|
expect(successCount).toBeGreaterThan(0);
|
|
|
|
// Database should exist and be valid
|
|
const dbPath = path.join(dbDir, 'nodes.db');
|
|
expect(fs.existsSync(dbPath)).toBe(true);
|
|
});
|
|
});
|
|
}); |