add integratoin test

src/integration-tests/stateManagementStreamableHttp.test.ts

@@ -0,0 +1,265 @@
+import { createServer, type Server } from 'node:http';
+import { AddressInfo } from 'node:net';
+import { randomUUID } from 'node:crypto';
+import { Client } from '../client/index.js';
+import { StreamableHTTPClientTransport } from '../client/streamableHttp.js';
+import { McpServer } from '../server/mcp.js';
+import { StreamableHTTPServerTransport } from '../server/streamableHttp.js';
+import { CallToolResultSchema, ListToolsResultSchema, ListResourcesResultSchema, ListPromptsResultSchema } from '../types.js';
+import { z } from 'zod';
+
+describe('Streamable HTTP Transport Session Management', () => {
+  // Function to set up the server with optional session management
+  async function setupServer(withSessionManagement: boolean) {
+    const server: Server = createServer();
+    const mcpServer = new McpServer(
+      { name: 'test-server', version: '1.0.0' },
+      {
+        capabilities: {
+          logging: {},
+          tools: {},
+          resources: {},
+          prompts: {}
+        }
+      }
+    );
+
+    // Add a simple resource
+    mcpServer.resource(
+      'test-resource',
+      '/test',
+      { description: 'A test resource' },
+      async () => ({
+        contents: [{
+          uri: '/test',
+          text: 'This is a test resource content'
+        }]
+      })
+    );
+
+    mcpServer.prompt(
+      'test-prompt',
+      'A test prompt',
+      async () => ({
+        messages: [{
+          role: 'user',
+          content: {
+            type: 'text',
+            text: 'This is a test prompt'
+          }
+        }]
+      })
+    );
+
+    mcpServer.tool(
+      'greet',
+      'A simple greeting tool',
+      {
+        name: z.string().describe('Name to greet').default('World'),
+      },
+      async ({ name }) => {
+        return {
+          content: [{ type: 'text', text: `Hello, ${name}!` }]
+        };
+      }
+    );
+
+    // Create transport with or without session management
+    const serverTransport = new StreamableHTTPServerTransport({
+      sessionIdGenerator: withSessionManagement
+        ? () => randomUUID()   // With session management, generate UUID
+        : () => undefined      // Without session management, return undefined
+    });
+
+    await mcpServer.connect(serverTransport);
+
+    server.on('request', async (req, res) => {
+      await serverTransport.handleRequest(req, res);
+    });
+
+    // Start the server on a random port
+    const baseUrl = await new Promise<URL>((resolve) => {
+      server.listen(0, '127.0.0.1', () => {
+        const addr = server.address() as AddressInfo;
+        resolve(new URL(`http://127.0.0.1:${addr.port}`));
+      });
+    });
+
+    return { server, mcpServer, serverTransport, baseUrl };
+  }
+
+  describe('Stateless Mode', () => {
+    let server: Server;
+    let mcpServer: McpServer;
+    let serverTransport: StreamableHTTPServerTransport;
+    let baseUrl: URL;
+
+    beforeEach(async () => {
+      const setup = await setupServer(false);
+      server = setup.server;
+      mcpServer = setup.mcpServer;
+      serverTransport = setup.serverTransport;
+      baseUrl = setup.baseUrl;
+    });
+
+    afterEach(async () => {
+      // Clean up resources
+      await mcpServer.close().catch(() => { });
+      await serverTransport.close().catch(() => { });
+      server.close();
+    });
+
+    it('should operate without session management', async () => {
+      // Create and connect a client
+      const client = new Client({
+        name: 'test-client',
+        version: '1.0.0'
+      });
+
+      const transport = new StreamableHTTPClientTransport(baseUrl);
+      await client.connect(transport);
+
+      // Verify that no session ID was set
+      expect(transport.sessionId).toBeUndefined();
+
+      // List available tools
+      const toolsResult = await client.request({
+        method: 'tools/list',
+        params: {}
+      }, ListToolsResultSchema);
+
+      // Verify tools are accessible
+      expect(toolsResult.tools).toContainEqual(expect.objectContaining({
+        name: 'greet'
+      }));
+
+      // List available resources
+      const resourcesResult = await client.request({
+        method: 'resources/list',
+        params: {}
+      }, ListResourcesResultSchema);
+
+      // Verify resources result structure
+      expect(resourcesResult).toHaveProperty('resources');
+
+      // List available prompts
+      const promptsResult = await client.request({
+        method: 'prompts/list',
+        params: {}
+      }, ListPromptsResultSchema);
+
+      // Verify prompts result structure
+      expect(promptsResult).toHaveProperty('prompts');
+      expect(promptsResult.prompts).toContainEqual(expect.objectContaining({
+        name: 'test-prompt'
+      }));
+
+      // Call the greeting tool
+      const greetingResult = await client.request({
+        method: 'tools/call',
+        params: {
+          name: 'greet',
+          arguments: {
+            name: 'Stateless Transport'
+          }
+        }
+      }, CallToolResultSchema);
+
+      // Verify tool result
+      expect(greetingResult.content).toEqual([
+        { type: 'text', text: 'Hello, Stateless Transport!' }
+      ]);
+
+      // Clean up
+      await transport.close();
+    });
+  });
+
+  describe('Stateful Mode', () => {
+    let server: Server;
+    let mcpServer: McpServer;
+    let serverTransport: StreamableHTTPServerTransport;
+    let baseUrl: URL;
+
+    beforeEach(async () => {
+      const setup = await setupServer(true);
+      server = setup.server;
+      mcpServer = setup.mcpServer;
+      serverTransport = setup.serverTransport;
+      baseUrl = setup.baseUrl;
+    });
+
+    afterEach(async () => {
+      // Clean up resources
+      await mcpServer.close().catch(() => { });
+      await serverTransport.close().catch(() => { });
+      server.close();
+    });
+
+    it('should operate with session management', async () => {
+      // Create and connect a client
+      const client = new Client({
+        name: 'test-client',
+        version: '1.0.0'
+      });
+
+      const transport = new StreamableHTTPClientTransport(baseUrl);
+      await client.connect(transport);
+
+      // Verify that a session ID was set
+      expect(transport.sessionId).toBeDefined();
+      expect(typeof transport.sessionId).toBe('string');
+
+      // List available tools
+      const toolsResult = await client.request({
+        method: 'tools/list',
+        params: {}
+      }, ListToolsResultSchema);
+
+      // Verify tools are accessible
+      expect(toolsResult.tools).toContainEqual(expect.objectContaining({
+        name: 'greet'
+      }));
+
+      // List available resources
+      const resourcesResult = await client.request({
+        method: 'resources/list',
+        params: {}
+      }, ListResourcesResultSchema);
+
+      // Verify resources result structure
+      expect(resourcesResult).toHaveProperty('resources');
+
+      // List available prompts
+      const promptsResult = await client.request({
+        method: 'prompts/list',
+        params: {}
+      }, ListPromptsResultSchema);
+
+      // Verify prompts result structure
+      expect(promptsResult).toHaveProperty('prompts');
+      expect(promptsResult.prompts).toContainEqual(expect.objectContaining({
+        name: 'test-prompt'
+      }));
+
+      // Call the greeting tool
+      const greetingResult = await client.request({
+        method: 'tools/call',
+        params: {
+          name: 'greet',
+          arguments: {
+            name: 'Stateful Transport'
+          }
+        }
+      }, CallToolResultSchema);
+
+      // Verify tool result
+      expect(greetingResult.content).toEqual([
+        { type: 'text', text: 'Hello, Stateful Transport!' }
+      ]);
+
+      // Clean up
+      await transport.close();
+    });
+  });
+});