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stream: add more forEach tests

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PR-URL: https://github.com/nodejs/node/pull/41937
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Robert Nagy <ronagy@icloud.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Mestery <mestery@protonmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
This commit is contained in:
Benjamin Gruenbaum 2022-02-11 20:21:42 +02:00
parent da11381154
commit 98cbbbb9b0
1 changed files with 47 additions and 2 deletions
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49
test/parallel/test-stream-forEach.js
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@ -5,7 +5,7 @@ const {
Readable,
} = require('stream');
const assert = require('assert');
const { setTimeout } = require('timers/promises');
const { once } = require('events');
{
// forEach works on synchronous streams with a synchronous predicate
@ -43,6 +43,51 @@ const { setTimeout } = require('timers/promises');
})().then(common.mustCall());
}
{
// forEach works on an infinite stream
const ac = new AbortController();
const { signal } = ac;
const stream = Readable.from(async function* () {
while (true) yield 1;
}(), { signal });
let i = 0;
assert.rejects(stream.forEach(common.mustCall((x) => {
i++;
if (i === 10) ac.abort();
assert.strictEqual(x, 1);
}, 10)), { name: 'AbortError' }).then(common.mustCall());
}
{
// Emitting an error during `forEach`
const stream = Readable.from([1, 2, 3, 4, 5]);
assert.rejects(stream.forEach(async (x) => {
if (x === 3) {
stream.emit('error', new Error('boom'));
}
}), /boom/).then(common.mustCall());
}
{
// Throwing an error during `forEach` (sync)
const stream = Readable.from([1, 2, 3, 4, 5]);
assert.rejects(stream.forEach((x) => {
if (x === 3) {
throw new Error('boom');
}
}), /boom/).then(common.mustCall());
}
{
// Throwing an error during `forEach` (async)
const stream = Readable.from([1, 2, 3, 4, 5]);
assert.rejects(stream.forEach(async (x) => {
if (x === 3) {
return Promise.reject(new Error('boom'));
}
}), /boom/).then(common.mustCall());
}
{
// Concurrency + AbortSignal
const ac = new AbortController();
@ -50,7 +95,7 @@ const { setTimeout } = require('timers/promises');
const forEachPromise =
Readable.from([1, 2, 3, 4]).forEach(async (_, { signal }) => {
calls++;
await setTimeout(100, { signal });
await once(signal, 'abort');
}, { signal: ac.signal, concurrency: 2 });
// pump
assert.rejects(async () => {