bun.sh/test/bun.js/node-dns.test.js

import { expect, test } from "bun:test";
import * as dns from "node:dns";

// TODO:
test("it exists", () => {
  expect(dns).toBeDefined();
  expect(dns.lookup).toBeDefined();
  expect(dns.lookupService).toBeDefined();
  expect(dns.resolve).toBeDefined();
  expect(dns.resolve4).toBeDefined();
  expect(dns.resolve6).toBeDefined();
  expect(dns.resolveSrv).toBeDefined();
  expect(dns.resolveTxt).toBeDefined();
  expect(dns.resolveSoa).toBeDefined();
  expect(dns.resolveNaptr).toBeDefined();
  expect(dns.resolveMx).toBeDefined();
  expect(dns.resolveCaa).toBeDefined();
  expect(dns.resolveNs).toBeDefined();
  expect(dns.resolvePtr).toBeDefined();
  expect(dns.resolveCname).toBeDefined();
});

// //TODO: use a bun.sh SRV for testing
test("dns.resolveSrv (_test._tcp.test.socketify.dev)", (done) => {
  dns.resolveSrv("_test._tcp.test.socketify.dev", (err, results) => {
    expect(err).toBeNull();
    expect(results instanceof Array).toBe(true);
    expect(results[0].name).toBe("_dc-srv.130c90ab9de1._test._tcp.test.socketify.dev");
    expect(results[0].priority).toBe(50);
    expect(results[0].weight).toBe(50);
    expect(results[0].port).toBe(80);
    done(err);
  });
});

test("dns.resolveSrv (_test._tcp.invalid.localhost)", (done) => {
  dns.resolveSrv("_test._tcp.invalid.localhost", (err, results) => {
    expect(err).toBeTruthy();
    expect(results).toBeUndefined(true);
    done();
  });
});

test("dns.resolveTxt (txt.socketify.dev)", (done) => {
  dns.resolveTxt("txt.socketify.dev", (err, results) => {
    expect(err).toBeNull();
    expect(results instanceof Array).toBe(true);
    expect(results[0][0]).toBe("bun_test;test");
    done(err);
  });
});


test("dns.resolveSoa (bun.sh)", (done) => {
  dns.resolveSoa("bun.sh", (err, result) => {
    expect(err).toBeNull();
    
    expect(result.serial).toBe(2295878541);
    expect(result.refresh).toBe(10000);
    expect(result.retry).toBe(2400);
    expect(result.expire).toBe(604800);
    expect(result.minttl).toBe(3600);
    expect(result.nsname).toBe("hans.ns.cloudflare.com");
    expect(result.hostmaster).toBe("dns.cloudflare.com");
    
    done(err);
  });
});

test("dns.resolveNaptr (naptr.socketify.dev)", (done) => {
  dns.resolveNaptr("naptr.socketify.dev", (err, results) => {
    expect(err).toBeNull();
    expect(results instanceof Array).toBe(true);
    expect(results[0].flags).toBe('S');
    expect(results[0].service).toBe('test');
    expect(results[0].regexp).toBe('');
    expect(results[0].replacement).toBe('');
    expect(results[0].order).toBe(1);
    expect(results[0].preference).toBe(12);
    done(err);
  });
});

test("dns.resolveCaa (caa.socketify.dev)", (done) => {
  dns.resolveCaa("caa.socketify.dev", (err, results) => {
    expect(err).toBeNull();
    expect(results instanceof Array).toBe(true);
    expect(results[0].critical).toBe(0);
    expect(results[0].issue).toBe('bun.sh');
    done(err);
  });
});


test("dns.resolveMx (bun.sh)", (done) => {
  dns.resolveMx("bun.sh", (err, results) => {
    expect(err).toBeNull();
    expect(results instanceof Array).toBe(true);
    expect(results[0].priority).toBe(10);
    expect(results[0].exchange).toBe('eforward1.registrar-servers.com');
    done(err);
  });
});



test("dns.resolveNs (bun.sh) ", (done) => {
  dns.resolveNs("bun.sh", (err, results) => {
    expect(err).toBeNull();
    expect(results instanceof Array).toBe(true);
    expect(results[0]).toBe('hans.ns.cloudflare.com');
    done(err);
  });
});

test("dns.resolvePtr (ptr.socketify.dev)", (done) => {
  dns.resolvePtr("ptr.socketify.dev", (err, results) => {
    expect(err).toBeNull();
    expect(results instanceof Array).toBe(true);
    expect(results[0]).toBe('bun.sh');
    done(err);
  });
});

test("dns.resolveCname (cname.socketify.dev)", (done) => {
  dns.resolveCname("cname.socketify.dev", (err, results) => {
    expect(err).toBeNull();
    expect(results instanceof Array).toBe(true);
    expect(results[0]).toBe('bun.sh');
    done(err);
  });
});


test("dns.lookup (example.com)", (done) => {
  dns.lookup("example.com", (err, address, family) => {
    expect(err).toBeNull();
    expect(typeof address).toBe("string");
    done(err);
  });
});

test("dns.lookup (localhost)", (done) => {
  dns.lookup("localhost", (err, address, family) => {
    expect(err).toBeNull();
    if (family === 6) {
      expect(address).toBe("::1");
    } else {
      expect(address).toBe("127.0.0.1");
    }

    done(err);
  });
});