node/test/parallel/test-child-process-send-after-close.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

32 lines
728 B
JavaScript

'use strict';
const common = require('../common');
const assert = require('assert');
const cp = require('child_process');
const fixtures = require('../common/fixtures');
const fixture = fixtures.path('empty.js');
const child = cp.fork(fixture);
child.on('close', common.mustCall((code, signal) => {
assert.strictEqual(code, 0);
assert.strictEqual(signal, null);
const testError = common.expectsError({
name: 'Error',
message: 'Channel closed',
code: 'ERR_IPC_CHANNEL_CLOSED'
}, 2);
child.on('error', testError);
{
const result = child.send('ping');
assert.strictEqual(result, false);
}
{
const result = child.send('pong', testError);
assert.strictEqual(result, false);
}
}));