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'use strict';
const common = require('../common');
const assert = require('assert');
const dnsPromises = require('dns').promises;
// Error when rrtype is invalid.
{
const rrtype = 'DUMMY';
common.expectsError(
() => dnsPromises.resolve('example.org', rrtype),
{
code: 'ERR_INVALID_OPT_VALUE',
type: TypeError,
message: `The value "${rrtype}" is invalid for option "rrtype"`
}
);
}
// Error when rrtype is a number.
{
const rrtype = 0;
common.expectsError(
() => dnsPromises.resolve('example.org', rrtype),
{
code: 'ERR_INVALID_ARG_TYPE',
type: TypeError,
message: 'The "rrtype" argument must be of type string. ' +
`Received type ${typeof rrtype}`
}
);
}
// Setting rrtype to undefined should work like resolve4.
{
(async function() {
const rrtype = undefined;
const result = await dnsPromises.resolve('example.org', rrtype);
assert.ok(result !== undefined);
assert.ok(result.length > 0);
})();
}