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

import { checkReadiness } from "./readiness";

describe("readiness checks", () => {
  it("reports ready only when every dependency succeeds", async () => {
    await expect(
      checkReadiness({ database: async () => true, redis: async () => "PONG" }),
    ).resolves.toEqual({
      status: "ready",
      checks: { database: "ok", redis: "ok" },
    });

    await expect(
      checkReadiness({
        database: async () => true,
        redis: async () => {
          throw new Error("offline");
        },
      }),
    ).resolves.toEqual({
      status: "not-ready",
      checks: { database: "ok", redis: "failed" },
    });
  });

  it("bounds a stalled dependency", async () => {
    vi.useFakeTimers();
    const result = checkReadiness(
      { database: () => new Promise(() => undefined) },
      100,
    );
    vi.advanceTimersByTime(100);
    await expect(result).resolves.toEqual({
      status: "not-ready",
      checks: { database: "failed" },
    });
    vi.useRealTimers();
  });
});