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nodejs/test/parallel/test-fs-watch-recursive-sync-write.js
Santiago Gimeno b345118e1e
test: refactor fs-watch tests due to macOS issue
In `macOS`, fsevents generated immediately before start watching may
leak into the event callback. See: https://github.com/nodejs/node/issues/54450
for an explanation. This might be fixed at some point in `libuv` though
it may take some time (see: https://github.com/libuv/libuv/issues/3866).
This commit comes in anticipation of the soon-to-be-released
`libuv@1.49.0` which was making these tests very flaky.

PR-URL: https://github.com/nodejs/node/pull/54498
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>
2024-09-06 17:38:28 +00:00

49 lines
1.4 KiB
JavaScript

'use strict';
const common = require('../common');
const { watch, writeFileSync } = require('node:fs');
const { join } = require('node:path');
const tmpdir = require('../common/tmpdir.js');
const assert = require('assert');
if (common.isIBMi)
common.skip('IBMi does not support `fs.watch()`');
// fs-watch on folders have limited capability in AIX.
// The testcase makes use of folder watching, and causes
// hang. This behavior is documented. Skip this for AIX.
if (common.isAIX)
common.skip('folder watch capability is limited in AIX.');
tmpdir.refresh();
const tmpDir = tmpdir.path;
const filename = join(tmpDir, 'test.file');
const keepalive = setTimeout(() => {
throw new Error('timed out');
}, common.platformTimeout(30_000));
function doWatch() {
const watcher = watch(tmpDir, { recursive: true }, common.mustCall((eventType, _filename) => {
clearTimeout(keepalive);
watcher.close();
assert.strictEqual(eventType, 'rename');
assert.strictEqual(join(tmpDir, _filename), filename);
}));
// Do the write with a delay to ensure that the OS is ready to notify us.
setTimeout(() => {
writeFileSync(filename, 'foobar2');
}, common.platformTimeout(200));
}
if (common.isMacOS) {
// On macOS delay watcher start to avoid leaking previous events.
// Refs: https://github.com/libuv/libuv/pull/4503
setTimeout(doWatch, common.platformTimeout(100));
} else {
doWatch();
}