import { readFileSync } from "node:fs";
import { join } from "node:path";
import { siteUrl } from "@/lib/site-content";
import robots from "./robots";

describe("robots", () => {
  it("allows everything, points to the sitemap at the site address and lists no route that does not exist", () => {
    expect(robots()).toEqual({
      rules: [
        {
          userAgent: "*",
          allow: ["/", "/_next/static/", "/_next/image/"],
        },
      ],
      sitemap: `${siteUrl}/sitemap.xml`,
    });
  });

  it("has no host (Yandex only, deprecated) and blocks no /api/ or /admin/", () => {
    const result = robots();
    expect(result).not.toHaveProperty("host");
    expect(JSON.stringify(result)).not.toMatch(/\/api\/|\/admin\/|disallow/i);
  });

  it("is saved without a byte order mark", () => {
    const bytes = readFileSync(join(__dirname, "robots.ts"));
    expect([...bytes.subarray(0, 3)]).not.toEqual([0xef, 0xbb, 0xbf]);
  });
});