node/test/parallel/test-child-process-fork-stdio-string-variant.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

33 lines
948 B
JavaScript

'use strict';
const common = require('../common');
// Ensures that child_process.fork can accept string
// variant of stdio parameter in options object and
// throws a TypeError when given an unexpected string
const assert = require('assert');
const fork = require('child_process').fork;
const fixtures = require('../common/fixtures');
const childScript = fixtures.path('child-process-spawn-node');
const malFormedOpts = { stdio: '33' };
const payload = { hello: 'world' };
assert.throws(
() => fork(childScript, malFormedOpts),
{ code: 'ERR_INVALID_OPT_VALUE', name: 'TypeError' });
function test(stringVariant) {
const child = fork(childScript, { stdio: stringVariant });
child.on('message', common.mustCall((message) => {
assert.deepStrictEqual(message, { foo: 'bar' });
}));
child.send(payload);
child.on('exit', common.mustCall((code) => assert.strictEqual(code, 0)));
}
['pipe', 'inherit', 'ignore'].forEach(test);