denoland-deno/cli/tests/node_compat/test/parallel/test-dns-lookup.js

// deno-fmt-ignore-file
// deno-lint-ignore-file

// Copyright Joyent and Node contributors. All rights reserved. MIT license.
// Taken from Node 16.13.0
// This file is automatically generated by "node/_tools/setup.ts". Do not modify this file manually

// Flags: --expose-internals
'use strict';

// TODO: enable remaining tests once functionality is implemented.

const common = require('../common');
const assert = require('assert');
// const { internalBinding } = require('internal/test/binding');
// const cares = internalBinding('cares_wrap');

// Stub `getaddrinfo` to *always* error. This has to be done before we load the
// `dns` module to guarantee that the `dns` module uses the stub.
// cares.getaddrinfo = () => internalBinding('uv').UV_ENOMEM;

const dns = require('dns');
const dnsPromises = dns.promises;

{
  const err = {
    code: "ERR_INVALID_ARG_TYPE",
    name: "TypeError",
    message:
      /^The "hostname" argument must be of type string\. Received type number/,
  };

  assert.throws(() => dns.lookup(1, {}), err);
  assert.throws(() => dnsPromises.lookup(1, {}), err);
}

// This also verifies different expectWarning notations.
// common.expectWarning({
//   // For 'internal/test/binding' module.
//   'internal/test/binding': [
//     'These APIs are for internal testing only. Do not use them.',
//   ],
//   // For calling `dns.lookup` with falsy `hostname`.
//   'DeprecationWarning': {
//     DEP0118: 'The provided hostname "false" is not a valid ' +
//       'hostname, and is supported in the dns module solely for compatibility.'
//   }
// });

assert.throws(
  () => {
    dns.lookup(false, "cb");
  },
  {
    code: "ERR_INVALID_ARG_TYPE",
    name: "TypeError",
  }
);

assert.throws(
  () => {
    dns.lookup(false, "options", "cb");
  },
  {
    code: "ERR_INVALID_ARG_TYPE",
    name: "TypeError",
  }
);

{
  const err = {
    code: 'ERR_INVALID_ARG_VALUE',
    name: 'TypeError',
    message: "The argument 'hints' is invalid. Received 100"
  };
  const options = {
    hints: 100,
    family: 0,
    all: false
  };

  assert.throws(() => { dnsPromises.lookup(false, options); }, err);
  assert.throws(() => {
    dns.lookup(false, options, common.mustNotCall());
  }, err);
}

{
  const family = 20;
  const err = {
    code: "ERR_INVALID_ARG_VALUE",
    name: "TypeError",
    message: `The property 'options.family' must be one of: 0, 4, 6. Received ${family}`,
  };
  const options = {
    hints: 0,
    family,
    all: false
  };

  assert.throws(() => { dnsPromises.lookup(false, options); }, err);
  assert.throws(() => {
    dns.lookup(false, options, common.mustNotCall());
  }, err);
}

(async function() {
  let res;

  res = await dnsPromises.lookup(false, {
    hints: 0,
    family: 0,
    all: true
  });
  assert.deepStrictEqual(res, []);

  res = await dnsPromises.lookup('127.0.0.1', {
    hints: 0,
    family: 4,
    all: true
  });
  assert.deepStrictEqual(res, [{ address: '127.0.0.1', family: 4 }]);

  res = await dnsPromises.lookup('127.0.0.1', {
    hints: 0,
    family: 4,
    all: false
  });
  assert.deepStrictEqual(res, { address: '127.0.0.1', family: 4 });
})().then(common.mustCall());

dns.lookup(false, {
  hints: 0,
  family: 0,
  all: true
}, common.mustSucceed((result, addressType) => {
  assert.deepStrictEqual(result, []);
  assert.strictEqual(addressType, undefined);
}));

dns.lookup('127.0.0.1', {
  hints: 0,
  family: 4,
  all: true
}, common.mustSucceed((result, addressType) => {
  assert.deepStrictEqual(result, [{
    address: '127.0.0.1',
    family: 4
  }]);
  assert.strictEqual(addressType, undefined);
}));

dns.lookup('127.0.0.1', {
  hints: 0,
  family: 4,
  all: false
}, common.mustSucceed((result, addressType) => {
  assert.deepStrictEqual(result, '127.0.0.1');
  assert.strictEqual(addressType, 4);
}));

// let tickValue = 0;

// Should fail due to stub.
// dns.lookup('example.com', common.mustCall((error, result, addressType) => {
//   assert(error);
//   assert.strictEqual(tickValue, 1);
//   assert.strictEqual(error.code, 'ENOMEM');
//   const descriptor = Object.getOwnPropertyDescriptor(error, 'message');
//   // The error message should be non-enumerable.
//   assert.strictEqual(descriptor.enumerable, false);
// }));

// Make sure that the error callback is called on next tick.
// tickValue = 1;

// Should fail due to stub.
// assert.rejects(dnsPromises.lookup('example.com'),
//                { code: 'ENOMEM', hostname: 'example.com' });