test: deflake test-fs-promises-watch-iterator

lpinca · web-flow · commit f8a43f6f3457 · 2025-10-09T05:33:33.000Z
Add a delay before writing the files to ensure that the watcher receives the notifications. Fixes: #60051 Refs: #52601 PR-URL: #60060 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
diff --git a/test/parallel/test-fs-promises-watch-iterator.js b/test/parallel/test-fs-promises-watch-iterator.js
@@ -34,10 +34,12 @@ class WatchTestCase {
     }
   }
   async writeFiles() {
+    // Do the write with a delay to ensure that the OS is ready to notify us.
+    await setTimeout(common.platformTimeout(100));
+
     for (const fileName of [...this.files]) {
       await writeFile(this.filePath(fileName), Date.now() + fileName.repeat(1e4));
     }
-    await setTimeout(common.platformTimeout(100));
   }
 }
 

Original file line number	Diff line number	Diff line change
`@@ -34,10 +34,12 @@ class WatchTestCase {`
`34`	`34`	`}`
`35`	`35`	`}`
`36`	`36`	`async writeFiles() {`
	`37`	`+ // Do the write with a delay to ensure that the OS is ready to notify us.`
	`38`	`+ await setTimeout(common.platformTimeout(100));`
	`39`	`+`
`37`	`40`	`for (const fileName of [...this.files]) {`
`38`	`41`	`await writeFile(this.filePath(fileName), Date.now() + fileName.repeat(1e4));`
`39`	`42`	`}`
`40`		`- await setTimeout(common.platformTimeout(100));`
`41`	`43`	`}`
`42`	`44`	`}`
`43`	`45`