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test: fix flaky test-watch-file

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PR-URL: https://github.com/nodejs/node/pull/34420
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Myles Borins <myles.borins@gmail.com>
This commit is contained in:
Rich Trott
2020-07-18 08:51:53 -07:00
parent 687dbd8526
commit b0b52b2023
1 changed files with 14 additions and 4 deletions
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18
test/pummel/test-watch-file.js
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@@ -34,8 +34,11 @@ fs.closeSync(fs.openSync(f, 'w'));
let changes = 0;
function watchFile() {
fs.watchFile(f, (curr, prev) => {
// Make sure there is at least one watch event that shows a changed mtime.
if (curr.mtime <= prev.mtime) {
return;
}
changes++;
assert.notDeepStrictEqual(curr.mtime, prev.mtime);
fs.unwatchFile(f);
watchFile();
fs.unwatchFile(f);
@@ -44,10 +47,17 @@ function watchFile() {
watchFile();
function changeFile() {
const fd = fs.openSync(f, 'w+');
fs.writeSync(fd, 'xyz\n');
fs.closeSync(fd);
}
const fd = fs.openSync(f, 'w+');
fs.writeSync(fd, 'xyz\n');
fs.closeSync(fd);
changeFile();
const interval = setInterval(changeFile, 1000);
// Use unref() here so fs.watchFile() watcher is the only thing keeping the
// event loop open.
interval.unref();
process.on('exit', function() {
assert.ok(changes > 0);