1 files changed, 35 insertions, 0 deletions
diff --git a/tests/auto/corelib/io/qtemporaryfile/tst_qtemporaryfile.cpp b/tests/auto/corelib/io/qtemporaryfile/tst_qtemporaryfile.cpp
index 28cf7a904a..6eb6f83d2a 100644
--- a/tests/auto/corelib/io/qtemporaryfile/tst_qtemporaryfile.cpp
+++ b/tests/auto/corelib/io/qtemporaryfile/tst_qtemporaryfile.cpp
@@ -92,6 +92,7 @@ private slots:
     void createNativeFile();
     void QTBUG_4796_data();
     void QTBUG_4796();
+    void guaranteeUnique();
 };
 
 void tst_QTemporaryFile::initTestCase()
@@ -782,5 +783,39 @@ void tst_QTemporaryFile::QTBUG_4796()
     cleaner.reset();
 }
 
+void tst_QTemporaryFile::guaranteeUnique()
+{
+    QDir dir(QDir::tempPath());
+    QString takenFileName;
+
+    // First pass. See which filename QTemporaryFile will try first.
+    {
+        // Fix the random seed.
+        qsrand(1135);
+        QTemporaryFile tmpFile("testFile1.XXXXXX");
+        tmpFile.open();
+        takenFileName = tmpFile.fileName();
+        QVERIFY(QFile::exists(takenFileName));
+    }
+
+    QVERIFY(!QFile::exists(takenFileName));
+
+    // Create a directory with same name.
+    QVERIFY(dir.mkdir(takenFileName));
+
+    // Second pass, now we have blocked its first attempt with a directory.
+    {
+        // Fix the random seed.
+        qsrand(1135);
+        QTemporaryFile tmpFile("testFile1.XXXXXX");
+        QVERIFY(tmpFile.open());
+        QString uniqueFileName = tmpFile.fileName();
+        QVERIFY(QFileInfo(uniqueFileName).isFile());
+        QVERIFY(uniqueFileName != takenFileName);
+    }
+
+    QVERIFY(dir.rmdir(takenFileName));
+}
+
 QTEST_MAIN(tst_QTemporaryFile)
 #include "tst_qtemporaryfile.moc"