Files
node/test/parallel/test-runner-execution-ordered-bypass.mjs
T
Filip Skokan fb1b8717ff test: synchronize ordered runner events
Release the slow fixture over a local socket after the fast fixture
emits its bypassed completion event. This removes the fixed 30-second
delay while preserving event-order assertions and a bounded failure
timeout.

Signed-off-by: Filip Skokan <panva.ip@gmail.com>
Assisted-by: Codex
PR-URL: https://github.com/nodejs/node/pull/65980
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: LiviaMedeiros <livia@cirno.name>
2026-09-13 14:01:16 +02:00

91 lines
2.8 KiB
JavaScript

// Flags: --no-warnings
import { mustCall, platformTimeout } from '../common/index.mjs';
import * as fixtures from '../common/fixtures.mjs';
import assert from 'node:assert';
import { once } from 'node:events';
import { createServer } from 'node:net';
import { test, run } from 'node:test';
const files = [
fixtures.path('test-runner', 'execution-ordered-bypass', 'slow.mjs'),
fixtures.path('test-runner', 'execution-ordered-bypass', 'fast-fail.mjs'),
];
test('execution-ordered events bypass FileTest declaration-order buffer', {
timeout: platformTimeout(30_000),
}, async (t) => {
const { promise: fastCompleted, resolve: releaseSlow } = Promise.withResolvers();
const server = createServer(mustCall((socket) => {
t.after(() => socket.destroy());
fastCompleted.then(mustCall(() => {
socket.end();
}));
}));
t.after(() => server.close());
await once(server.listen(0, '127.0.0.1'), 'listening');
// Concurrency must be a number so the runner does not collapse it to 1 on
// single-core CI runners (where `concurrency: true` resolves to
// `availableParallelism() - 1`). Without two slots the runner spawns the
// files sequentially and fast-fail never starts while slow is waiting.
const stream = run({
files,
isolation: 'process',
concurrency: 2,
argv: [String(server.address().port)],
signal: t.signal,
});
const events = [];
stream.on('test:complete', (data) => {
if (data.name === 'slow' || data.name === 'fast-fail') {
events.push(`complete:${data.name}`);
}
if (data.name === 'fast-fail') {
releaseSlow();
}
});
stream.on('test:fail', (data) => {
if (data.name === 'fast-fail') {
events.push(`fail:${data.name}`);
}
});
stream.on('test:log', (data) => {
events.push(`log:${data.message}`);
});
// eslint-disable-next-line no-unused-vars
for await (const _ of stream);
const completeFast = events.indexOf('complete:fast-fail');
const completeSlow = events.indexOf('complete:slow');
const failFast = events.indexOf('fail:fast-fail');
assert.notStrictEqual(completeFast, -1);
assert.notStrictEqual(completeSlow, -1);
assert.notStrictEqual(failFast, -1);
assert.ok(
completeFast < completeSlow,
`test:complete for fast-fail should arrive before slow; events=${events.join(', ')}`,
);
// test:fail is declaration-ordered, so the bypass must not affect it.
assert.ok(
failFast > completeSlow,
`test:fail for fast-fail should arrive after test:complete for slow; events=${events.join(', ')}`,
);
// test:log is execution-ordered, so it must bypass the buffer too.
const logFast = events.indexOf('log:live');
assert.notStrictEqual(logFast, -1);
assert.ok(
logFast < completeSlow,
`test:log for fast-fail should arrive before slow's test:complete; events=${events.join(', ')}`,
);
});