mirror of https://github.com/nodejs/node.git
49 lines
1.2 KiB
JavaScript
49 lines
1.2 KiB
JavaScript
'use strict';
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const common = require('../common');
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const assert = require('assert');
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const dgram = require('dgram');
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const dns = require('dns');
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{
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// Verify that the provided lookup function is called.
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const lookup = common.mustCall((host, family, callback) => {
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dns.lookup(host, family, callback);
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});
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const socket = dgram.createSocket({ type: 'udp4', lookup });
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socket.bind(common.mustCall(() => {
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socket.close();
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}));
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}
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{
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// Verify that lookup defaults to dns.lookup().
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const originalLookup = dns.lookup;
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dns.lookup = common.mustCall((host, family, callback) => {
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dns.lookup = originalLookup;
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originalLookup(host, family, callback);
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});
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const socket = dgram.createSocket({ type: 'udp4' });
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socket.bind(common.mustCall(() => {
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socket.close();
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}));
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}
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{
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// Verify that non-functions throw.
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[null, true, false, 0, 1, NaN, '', 'foo', {}, Symbol()].forEach((value) => {
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assert.throws(() => {
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dgram.createSocket({ type: 'udp4', lookup: value });
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}, {
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code: 'ERR_INVALID_ARG_TYPE',
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name: 'TypeError',
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message: 'The "lookup" argument must be of type function.' +
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common.invalidArgTypeHelper(value)
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});
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});
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}
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