Don't try to open empty file name

Fixes: `QFSFileEngine::open: No file name specified`

1 files changed, 10 insertions, 6 deletions

diff --git a/src/gui/folderwatcher.cpp b/src/gui/folderwatcher.cpp
index a307cca20..c6cef4ff6 100644
--- a/src/gui/folderwatcher.cpp
+++ b/src/gui/folderwatcher.cpp
@@ -83,7 +83,8 @@ void FolderWatcher::startNotificatonTest(const QString &path)
     return;
 #endif
 
-    OC_ASSERT(_testNotificationPath.isEmpty());
+    Q_ASSERT(_testNotificationPath.isEmpty());
+    Q_ASSERT(!path.isEmpty());
     _testNotificationPath = path;
 
     // Don't do the local file modification immediately:
@@ -93,17 +94,20 @@ void FolderWatcher::startNotificatonTest(const QString &path)
 
 void FolderWatcher::startNotificationTestWhenReady()
 {
+    if (!_testNotificationPath.isEmpty()) {
+        // we already received the notification
+        return;
+    }
     if (!_d->_ready) {
         QTimer::singleShot(1000, this, &FolderWatcher::startNotificationTestWhenReady);
         return;
     }
 
-    auto path = _testNotificationPath;
-    if (QFile::exists(path)) {
-        auto mtime = FileSystem::getModTime(path);
-        FileSystem::setModTime(path, mtime + 1);
+    if (OC_ENSURE(QFile::exists(_testNotificationPath))) {
+        const auto mtime = FileSystem::getModTime(_testNotificationPath);
+        FileSystem::setModTime(_testNotificationPath, mtime + 1);
     } else {
-        QFile f(path);
+        QFile f(_testNotificationPath);
         f.open(QIODevice::WriteOnly | QIODevice::Append);
     }