Initial commit of n8n MCP Server

A Model Context Protocol (MCP) server that integrates with n8n, providing tools for workflow and execution management via the n8n API.

tests/unit/api/simple-client.test.ts

@@ -0,0 +1,54 @@
+/**
+ * Simple HTTP client tests without complex dependencies
+ */
+
+import { describe, it, expect } from '@jest/globals';
+
+// Create a simple HTTP client class to test
+class SimpleHttpClient {
+  constructor(private baseUrl: string, private apiKey: string) {}
+  
+  getBaseUrl(): string {
+    return this.baseUrl;
+  }
+  
+  getApiKey(): string {
+    return this.apiKey;
+  }
+  
+  buildAuthHeader(): Record<string, string> {
+    return {
+      'X-N8N-API-KEY': this.apiKey
+    };
+  }
+  
+  formatUrl(path: string): string {
+    return `${this.baseUrl}${path.startsWith('/') ? path : '/' + path}`;
+  }
+}
+
+describe('SimpleHttpClient', () => {
+  it('should store baseUrl and apiKey properly', () => {
+    const baseUrl = 'https://n8n.example.com/api/v1';
+    const apiKey = 'test-api-key';
+    const client = new SimpleHttpClient(baseUrl, apiKey);
+    
+    expect(client.getBaseUrl()).toBe(baseUrl);
+    expect(client.getApiKey()).toBe(apiKey);
+  });
+  
+  it('should create proper auth headers', () => {
+    const client = new SimpleHttpClient('https://n8n.example.com/api/v1', 'test-api-key');
+    const headers = client.buildAuthHeader();
+    
+    expect(headers).toEqual({ 'X-N8N-API-KEY': 'test-api-key' });
+  });
+  
+  it('should format URLs correctly', () => {
+    const baseUrl = 'https://n8n.example.com/api/v1';
+    const client = new SimpleHttpClient(baseUrl, 'test-api-key');
+    
+    expect(client.formatUrl('workflows')).toBe(`${baseUrl}/workflows`);
+    expect(client.formatUrl('/workflows')).toBe(`${baseUrl}/workflows`);
+  });
+});