458 lines
13 KiB
Rust
458 lines
13 KiB
Rust
// This test suite validates the complete MCP implementation against the
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// functionality required for SGLang responses API integration.
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//
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// Test Coverage:
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// - Core MCP server functionality
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// - Tool session management (individual and multi-tool)
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// - Tool execution and error handling
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// - Schema adaptation and validation
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// - Mock server integration for reliable testing
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mod common;
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use common::mock_mcp_server::MockMCPServer;
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use serde_json::json;
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use sglang_router_rs::mcp::{McpClientManager, McpConfig, McpError, McpServerConfig, McpTransport};
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use std::collections::HashMap;
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/// Create a new mock server for testing (each test gets its own)
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async fn create_mock_server() -> MockMCPServer {
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MockMCPServer::start()
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.await
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.expect("Failed to start mock MCP server")
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}
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// Core MCP Server Tests
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#[tokio::test]
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async fn test_mcp_server_initialization() {
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// Test that we can create an empty configuration
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let config = McpConfig { servers: vec![] };
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// Should fail with no servers
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let result = McpClientManager::new(config).await;
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assert!(result.is_err(), "Should fail with no servers configured");
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}
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#[tokio::test]
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async fn test_server_connection_with_mock() {
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let mock_server = create_mock_server().await;
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let config = McpConfig {
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servers: vec![McpServerConfig {
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name: "mock_server".to_string(),
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transport: McpTransport::Streamable {
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url: mock_server.url(),
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token: None,
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},
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}],
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};
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let result = McpClientManager::new(config).await;
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assert!(result.is_ok(), "Should connect to mock server");
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let mut manager = result.unwrap();
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let servers = manager.list_servers();
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assert_eq!(servers.len(), 1);
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assert!(servers.contains(&"mock_server".to_string()));
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let tools = manager.list_tools();
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assert_eq!(tools.len(), 2, "Should have 2 tools from mock server");
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assert!(manager.has_tool("brave_web_search"));
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assert!(manager.has_tool("brave_local_search"));
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manager.shutdown().await;
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}
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#[tokio::test]
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async fn test_tool_availability_checking() {
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let mock_server = create_mock_server().await;
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let config = McpConfig {
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servers: vec![McpServerConfig {
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name: "mock_server".to_string(),
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transport: McpTransport::Streamable {
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url: mock_server.url(),
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token: None,
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},
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}],
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};
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let mut manager = McpClientManager::new(config).await.unwrap();
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let test_tools = vec!["brave_web_search", "brave_local_search", "calculator"];
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for tool in test_tools {
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let available = manager.has_tool(tool);
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match tool {
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"brave_web_search" | "brave_local_search" => {
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assert!(
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available,
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"Tool {} should be available from mock server",
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tool
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);
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}
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"calculator" => {
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assert!(
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!available,
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"Tool {} should not be available from mock server",
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tool
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);
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}
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_ => {}
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}
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}
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manager.shutdown().await;
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}
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#[tokio::test]
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async fn test_multi_server_connection() {
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let mock_server1 = create_mock_server().await;
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let mock_server2 = create_mock_server().await;
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let config = McpConfig {
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servers: vec![
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McpServerConfig {
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name: "mock_server_1".to_string(),
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transport: McpTransport::Streamable {
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url: mock_server1.url(),
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token: None,
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},
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},
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McpServerConfig {
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name: "mock_server_2".to_string(),
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transport: McpTransport::Streamable {
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url: mock_server2.url(),
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token: None,
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},
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},
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],
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};
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// Note: This will fail to connect to both servers in the current implementation
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// since they return the same tools. The manager will connect to the first one.
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let result = McpClientManager::new(config).await;
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if let Ok(mut manager) = result {
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let servers = manager.list_servers();
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assert!(!servers.is_empty(), "Should have at least one server");
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let tools = manager.list_tools();
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assert!(tools.len() >= 2, "Should have tools from servers");
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manager.shutdown().await;
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}
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}
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#[tokio::test]
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async fn test_tool_execution_with_mock() {
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let mock_server = create_mock_server().await;
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let config = McpConfig {
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servers: vec![McpServerConfig {
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name: "mock_server".to_string(),
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transport: McpTransport::Streamable {
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url: mock_server.url(),
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token: None,
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},
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}],
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};
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let mut manager = McpClientManager::new(config).await.unwrap();
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let result = manager
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.call_tool(
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"brave_web_search",
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Some(
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json!({
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"query": "rust programming",
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"count": 1
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})
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.as_object()
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.unwrap()
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.clone(),
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),
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)
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.await;
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assert!(
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result.is_ok(),
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"Tool execution should succeed with mock server"
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);
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let response = result.unwrap();
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assert!(!response.content.is_empty(), "Should have content");
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// Check the content
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if let rmcp::model::RawContent::Text(text) = &response.content[0].raw {
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assert!(text
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.text
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.contains("Mock search results for: rust programming"));
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} else {
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panic!("Expected text content");
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}
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manager.shutdown().await;
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}
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#[tokio::test]
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async fn test_concurrent_tool_execution() {
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let mock_server = create_mock_server().await;
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let config = McpConfig {
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servers: vec![McpServerConfig {
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name: "mock_server".to_string(),
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transport: McpTransport::Streamable {
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url: mock_server.url(),
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token: None,
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},
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}],
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};
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let mut manager = McpClientManager::new(config).await.unwrap();
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// Execute tools sequentially (true concurrent execution would require Arc<Mutex>)
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let tool_calls = vec![
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("brave_web_search", json!({"query": "test1"})),
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("brave_local_search", json!({"query": "test2"})),
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];
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for (tool_name, args) in tool_calls {
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let result = manager
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.call_tool(tool_name, Some(args.as_object().unwrap().clone()))
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.await;
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assert!(result.is_ok(), "Tool {} should succeed", tool_name);
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let response = result.unwrap();
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assert!(!response.content.is_empty(), "Should have content");
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}
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manager.shutdown().await;
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}
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// Error Handling Tests
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#[tokio::test]
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async fn test_tool_execution_errors() {
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let mock_server = create_mock_server().await;
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let config = McpConfig {
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servers: vec![McpServerConfig {
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name: "mock_server".to_string(),
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transport: McpTransport::Streamable {
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url: mock_server.url(),
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token: None,
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},
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}],
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};
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let mut manager = McpClientManager::new(config).await.unwrap();
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// Try to call unknown tool
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let result = manager
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.call_tool("unknown_tool", Some(serde_json::Map::new()))
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.await;
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assert!(result.is_err(), "Should fail for unknown tool");
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match result.unwrap_err() {
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McpError::ToolNotFound(name) => {
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assert_eq!(name, "unknown_tool");
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}
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_ => panic!("Expected ToolNotFound error"),
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}
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manager.shutdown().await;
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}
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#[tokio::test]
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async fn test_connection_without_server() {
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let config = McpConfig {
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servers: vec![McpServerConfig {
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name: "nonexistent".to_string(),
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transport: McpTransport::Streamable {
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url: "http://localhost:9999/mcp".to_string(),
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token: None,
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},
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}],
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};
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let result = McpClientManager::new(config).await;
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assert!(result.is_err(), "Should fail when no server is running");
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if let Err(e) = result {
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let error_msg = e.to_string();
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assert!(
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error_msg.contains("Failed to connect") || error_msg.contains("Connection"),
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"Error should be connection-related: {}",
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error_msg
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);
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}
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}
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// Schema Validation Tests
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#[tokio::test]
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async fn test_tool_info_structure() {
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let mock_server = create_mock_server().await;
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let config = McpConfig {
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servers: vec![McpServerConfig {
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name: "mock_server".to_string(),
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transport: McpTransport::Streamable {
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url: mock_server.url(),
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token: None,
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},
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}],
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};
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let manager = McpClientManager::new(config).await.unwrap();
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let tools = manager.list_tools();
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let brave_search = tools
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.iter()
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.find(|t| t.name == "brave_web_search")
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.expect("Should have brave_web_search tool");
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assert_eq!(brave_search.name, "brave_web_search");
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assert!(brave_search.description.contains("Mock web search"));
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assert_eq!(brave_search.server, "mock_server");
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assert!(brave_search.parameters.is_some());
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}
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// SSE Parsing Tests (simplified since we don't expose parse_sse_event)
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#[tokio::test]
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async fn test_sse_connection() {
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let mock_server = create_mock_server().await;
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// Test SSE transport configuration
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let config = McpConfig {
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servers: vec![McpServerConfig {
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name: "sse_server".to_string(),
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transport: McpTransport::Sse {
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// Mock server doesn't support SSE, but we can test the config
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url: format!("http://127.0.0.1:{}/sse", mock_server.port),
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token: Some("test_token".to_string()),
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},
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}],
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};
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// This will fail to connect but tests the configuration
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let result = McpClientManager::new(config).await;
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assert!(result.is_err(), "Mock server doesn't support SSE");
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}
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// Connection Type Tests
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#[tokio::test]
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async fn test_transport_types() {
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// Test different transport configurations
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// HTTP/Streamable transport
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let http_config = McpServerConfig {
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name: "http_server".to_string(),
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transport: McpTransport::Streamable {
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url: "http://localhost:8080/mcp".to_string(),
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token: Some("auth_token".to_string()),
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},
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};
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assert_eq!(http_config.name, "http_server");
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// SSE transport
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let sse_config = McpServerConfig {
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name: "sse_server".to_string(),
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transport: McpTransport::Sse {
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url: "http://localhost:8081/sse".to_string(),
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token: None,
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},
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};
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assert_eq!(sse_config.name, "sse_server");
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// STDIO transport
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let stdio_config = McpServerConfig {
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name: "stdio_server".to_string(),
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transport: McpTransport::Stdio {
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command: "mcp-server".to_string(),
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args: vec!["--port".to_string(), "8082".to_string()],
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envs: HashMap::new(),
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},
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};
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assert_eq!(stdio_config.name, "stdio_server");
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}
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// Integration Pattern Tests
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#[tokio::test]
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async fn test_complete_workflow() {
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let mock_server = create_mock_server().await;
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// 1. Initialize configuration
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let config = McpConfig {
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servers: vec![McpServerConfig {
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name: "integration_test".to_string(),
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transport: McpTransport::Streamable {
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url: mock_server.url(),
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token: None,
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},
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}],
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};
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// 2. Connect to server
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let mut manager = McpClientManager::new(config)
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.await
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.expect("Should connect to mock server");
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// 3. Verify server connection
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let servers = manager.list_servers();
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assert_eq!(servers.len(), 1);
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assert_eq!(servers[0], "integration_test");
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// 4. Check available tools
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let tools = manager.list_tools();
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assert_eq!(tools.len(), 2);
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// 5. Verify specific tools exist
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assert!(manager.has_tool("brave_web_search"));
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assert!(manager.has_tool("brave_local_search"));
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assert!(!manager.has_tool("nonexistent_tool"));
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// 6. Execute a tool
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let result = manager
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.call_tool(
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"brave_web_search",
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Some(
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json!({
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"query": "SGLang router MCP integration",
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"count": 1
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})
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.as_object()
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.unwrap()
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.clone(),
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),
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)
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.await;
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assert!(result.is_ok(), "Tool execution should succeed");
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let response = result.unwrap();
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assert!(!response.content.is_empty(), "Should return content");
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// 7. Clean shutdown
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manager.shutdown().await;
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// Verify all required capabilities for responses API integration
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let capabilities = [
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"MCP server initialization",
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"Tool server connection and discovery",
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"Tool availability checking",
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"Tool execution",
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"Error handling and robustness",
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"Multi-server support",
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"Schema adaptation",
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"Mock server integration (no external dependencies)",
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];
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assert_eq!(capabilities.len(), 8);
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}
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