node/test/parallel/test-dgram-multicast-setTTL.js
Ruben Bridgewater e038d6a1cd
test: refactor common.expectsError
This completely refactors the `expectsError` behavior: so far it's
almost identical to `assert.throws(fn, object)` in case it was used
with a function as first argument. It had a magical property check
that allowed to verify a functions `type` in case `type` was passed
used in the validation object. This pattern is now completely removed
and `assert.throws()` should be used instead.

The main intent for `common.expectsError()` is to verify error cases
for callback based APIs. This is now more flexible by accepting all
validation possibilites that `assert.throws()` accepts as well. No
magical properties exist anymore. This reduces surprising behavior
for developers who are not used to the Node.js core code base.

This has the side effect that `common` is used significantly less
frequent.

PR-URL: https://github.com/nodejs/node/pull/31092
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
2019-12-31 15:54:20 +01:00

50 lines
1.8 KiB
JavaScript

// Copyright Joyent, Inc. and other Node contributors.
//
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'use strict';
const common = require('../common');
const assert = require('assert');
const dgram = require('dgram');
const socket = dgram.createSocket('udp4');
socket.bind(0);
socket.on('listening', common.mustCall(() => {
const result = socket.setMulticastTTL(16);
assert.strictEqual(result, 16);
// Try to set an invalid TTL (valid ttl is > 0 and < 256)
assert.throws(() => {
socket.setMulticastTTL(1000);
}, /^Error: setMulticastTTL EINVAL$/);
assert.throws(() => {
socket.setMulticastTTL('foo');
}, {
code: 'ERR_INVALID_ARG_TYPE',
name: 'TypeError',
message: 'The "ttl" argument must be of type number. Received type string' +
" ('foo')"
});
// Close the socket
socket.close();
}));