import { describe, it, expect, vi } from "vitest";

// Stub the tRPC context factory so useTRPC() can run outside a React render:
// the real context.useTRPC() requires a mounted TRPCProvider. The stubbed
// proxy lets us exercise the router-agnostic delegation (client.ts:useTRPC).
vi.mock("@trpc/tanstack-react-query", () => ({
  createTRPCContext: () => ({
    TRPCProvider: () => null,
    useTRPC: () => ({ __proxy: "trpc-options-proxy" }),
  }),
}));

import { useTRPC, TRPCProvider } from "./client";

describe("core-trpc client exports", () => {
  it("exports useTRPC hook", () => {
    expect(useTRPC).toBeTypeOf("function");
  });

  it("exports TRPCProvider component", () => {
    expect(TRPCProvider).toBeTypeOf("function");
  });

  it("useTRPC delegates to the underlying router-agnostic tRPC proxy", () => {
    // The generic is a compile-time-only cast; at runtime it returns whatever
    // the shared context proxy yields.
    expect(useTRPC()).toEqual({ __proxy: "trpc-options-proxy" });
  });
});