return { log: vi.fn(), error: vi.fn(), exit: vi.fn() };

}

function runtimeErrorMessageAt(runtime: ReturnType<typeof createRuntime>, index: number): string {

const call = runtime.error.mock.calls[index];

if (!call || typeof call[0] !== "string") {

throw new Error(`expected runtime error call ${index + 1}`);

}

return call[0];

}

function latestRuntimeErrorMessage(runtime: ReturnType<typeof createRuntime>): string {

return runtimeErrorMessageAt(runtime, runtime.error.mock.calls.length - 1);

}

describe("waitForTransportReady", () => {

beforeAll(async () => {

({ waitForTransportReady } = await import("./transport-ready.js"));

await asserted;

expect(runtime.error).toHaveBeenCalledTimes(2);

expect(runtime.error.mock.calls.at(0)?.[0]).toContain("unknown error");

expect(runtime.error.mock.calls.at(-1)?.[0]).toContain("not ready after 120ms");

expect(runtimeErrorMessageAt(runtime, 0)).toContain("unknown error");

expect(latestRuntimeErrorMessage(runtime)).toContain("not ready after 120ms");

});

it("rethrows non-abort sleep failures", async () => {