import { describe, expect, test } from "bun:test"import { ACP } from "../../src/acp/agent"import type { Agent as ACPAgent } from "@agentclientprotocol/sdk" /** * Type-level test: This line will fail to compile if ACP.Agent * doesn't properly implement the ACPAgent interface. * * The SDK checks for methods like `agent.unstable_setSessionModel` at runtime * and throws "Method not found" if they're missing. TypeScript allows optional * interface methods to be omitted, but the SDK still expects them. * * @see https://github.com/agentclientprotocol/typescript-sdk/commit/7072d3f */type _AssertAgentImplementsACPAgent = ACP.Agent extends ACPAgent ? true : neverconst _typeCheck: _AssertAgentImplementsACPAgent = true /** * Runtime verification that optional methods the SDK expects are actually implemented. * The SDK's router checks `if (!agent.methodName)` and throws MethodNotFound if missing. */describe("acp.agent interface compliance", () => {  // Extract method names from the ACPAgent interface type  type ACPAgentMethods = keyof ACPAgent   // Methods that the SDK's router explicitly checks for at runtime  const sdkCheckedMethods: ACPAgentMethods[] = [    // Required    "initialize",    "newSession",    "prompt",    "cancel",    // Optional but checked by SDK router    "loadSession",    "setSessionMode",    "authenticate",    // Unstable - SDK checks these with unstable_ prefix    "unstable_listSessions",    "unstable_forkSession",    "unstable_resumeSession",    "unstable_setSessionModel",  ]   test("Agent implements all SDK-checked methods", () => {    for (const method of sdkCheckedMethods) {      expect(typeof ACP.Agent.prototype[method as keyof typeof ACP.Agent.prototype], `Missing method: ${method}`).toBe(        "function",      )    }  })})