node/test/parallel/test-fs-watch-recursive.js
Eran Levin 67e067eb06 fs: watch signals for recursive incompatibility
This pull request makes fs.watch throw exception,
whenever it is used in an incompatible platform.
For this change following changes were made to api:

1.a new error type has been introduced.
2.fs.watch has been changed accordingly.

Users who use recursive  on
non-windows and osx platforms,
will face a new exception.
For this reason, it's a breaking change.

Fixes: https://github.com/nodejs/node/issues/29901

PR-URL: https://github.com/nodejs/node/pull/29947
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
2020-01-24 20:57:27 -08:00

55 lines
1.3 KiB
JavaScript

'use strict';
const common = require('../common');
const assert = require('assert');
const path = require('path');
const fs = require('fs');
const tmpdir = require('../common/tmpdir');
const testDir = tmpdir.path;
const filenameOne = 'watch.txt';
tmpdir.refresh();
const testsubdir = fs.mkdtempSync(testDir + path.sep);
const relativePathOne = path.join(path.basename(testsubdir), filenameOne);
const filepathOne = path.join(testsubdir, filenameOne);
if (!common.isOSX && !common.isWindows) {
assert.throws(() => { fs.watch(testDir, { recursive: true }); },
{ code: 'ERR_FEATURE_UNAVAILABLE_ON_PLATFORM' });
return;
}
const watcher = fs.watch(testDir, { recursive: true });
let watcherClosed = false;
watcher.on('change', function(event, filename) {
assert.ok(event === 'change' || event === 'rename');
// Ignore stale events generated by mkdir and other tests
if (filename !== relativePathOne)
return;
if (common.isOSX) {
clearInterval(interval);
}
watcher.close();
watcherClosed = true;
});
let interval;
if (common.isOSX) {
interval = setInterval(function() {
fs.writeFileSync(filepathOne, 'world');
}, 10);
} else {
fs.writeFileSync(filepathOne, 'world');
}
process.on('exit', function() {
assert(watcherClosed, 'watcher Object was not closed');
});