/**
 * MCP integration test helpers.
 * Provides a real MCP Client connected to the dig server via InMemoryTransport.
 */
import { Client } from "@modelcontextprotocol/sdk/client/index.js";
/**
 * Create and connect an MCP client to the dig server.
 * Call once in beforeAll, and call closeMcpClient in afterAll.
 */
export declare function createTestMcpClient(): Promise<Client>;
/**
 * Close the MCP client and server transports.
 */
export declare function closeMcpClient(): Promise<void>;
/**
 * Extract text content from a callTool result.
 */
export declare function getToolText(result: Awaited<ReturnType<Client["callTool"]>>): string;
/**
 * Check if a callTool result is an error response.
 */
export declare function isToolError(result: Awaited<ReturnType<Client["callTool"]>>): boolean;