From eb0c83ffcea1aebae3ec954268319a3618e5961b Mon Sep 17 00:00:00 2001
From: Uwe Klotz <uklotz@mixxx.org>
Date: Thu, 20 Jan 2022 12:56:44 +0100
Subject: [PATCH] Testing: Increase sleep time for file modification time
 stamps

---
 src/test/libraryfilesynctest.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/test/libraryfilesynctest.cpp b/src/test/libraryfilesynctest.cpp
index 6721837985d..680e5a75429 100644
--- a/src/test/libraryfilesynctest.cpp
+++ b/src/test/libraryfilesynctest.cpp
@@ -33,7 +33,12 @@ void sleepBeforeUpdatingFileLastModifiedTime() {
     // This grace period seems to be mandatory at least for the CI
     // test runs and might need to be adjusted depending on the
     // results for different platforms.
-    QThread::msleep(1);
+    //
+    // A sleep time of 1 ms has been reported to cause sporadic failures
+    // on Ubuntu 20.04 and Qt 5.12 because the file modification time has
+    // not been increased as expected when exporting track metadata into
+    // file tags.
+    QThread::msleep(2);
 }
 
 /// A temporary file system with a single audio file.