diff --git a/tests/auto/corelib/io/qtemporaryfile/tst_qtemporaryfile.cpp b/tests/auto/corelib/io/qtemporaryfile/tst_qtemporaryfile.cpp
@@ -1,6 +1,7 @@
 /****************************************************************************
 **
 ** Copyright (C) 2016 The Qt Company Ltd.
+** Copyright (C) 2017 Intel Corporation.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the test suite of the Qt Toolkit.
@@ -32,6 +33,7 @@
 #include <qtemporarydir.h>
 #include <qtemporaryfile.h>
 #include <qfile.h>
+#include <qdatetime.h>
 #include <qdir.h>
 #include <qset.h>
 #include <qtextcodec.h>
@@ -63,7 +65,7 @@ private slots:
     void fileNameIsEmpty();
     void autoRemove();
     void nonWritableCurrentDir();
-    void write();
+    void io();
     void openCloseOpenClose();
     void removeAndReOpen();
     void size();
@@ -286,6 +288,18 @@ void tst_QTemporaryFile::autoRemove()
         fileName = file.fileName();
         file.close();
     }
+    QVERIFY(!fileName.isEmpty());
+    QVERIFY(!QFile::exists(fileName));
+
+    // same, but gets the file name after closing
+    {
+        QTemporaryFile file("tempXXXXXX");
+        file.setAutoRemove(true);
+        QVERIFY(file.open());
+        file.close();
+        fileName = file.fileName();
+    }
+    QVERIFY(!fileName.isEmpty());
     QVERIFY(!QFile::exists(fileName));
 
     // Test if disabling auto remove works.
@@ -296,6 +310,19 @@ void tst_QTemporaryFile::autoRemove()
         fileName = file.fileName();
         file.close();
     }
+    QVERIFY(!fileName.isEmpty());
+    QVERIFY(QFile::exists(fileName));
+    QVERIFY(QFile::remove(fileName));
+
+    // same, but gets the file name after closing
+    {
+        QTemporaryFile file("tempXXXXXX");
+        file.setAutoRemove(false);
+        QVERIFY(file.open());
+        file.close();
+        fileName = file.fileName();
+    }
+    QVERIFY(!fileName.isEmpty());
     QVERIFY(QFile::exists(fileName));
     QVERIFY(QFile::remove(fileName));
 
@@ -346,17 +373,51 @@ void tst_QTemporaryFile::nonWritableCurrentDir()
 #endif
 }
 
-void tst_QTemporaryFile::write()
+void tst_QTemporaryFile::io()
 {
     QByteArray data("OLE\nOLE\nOLE");
     QTemporaryFile file;
+    QDateTime before = QDateTime::currentDateTimeUtc().addMSecs(-250);
+
+    // discard msec component (round down) - not all FSs and OSs support them
+    before.setSecsSinceEpoch(before.toSecsSinceEpoch());
+
     QVERIFY(file.open());
+    QVERIFY(file.readLink().isEmpty()); // it's not a link!
+    QFile::Permissions perm = file.permissions();
+    QVERIFY(perm & QFile::ReadOwner);
+    QVERIFY(file.setPermissions(perm));
+
+    QCOMPARE(int(file.size()), 0);
+    QVERIFY(file.resize(data.size()));
+    QCOMPARE(int(file.size()), data.size());
     QCOMPARE((int)file.write(data), data.size());
+    QCOMPARE(int(file.size()), data.size());
+
+    QDateTime mtime = file.fileTime(QFile::FileModificationTime).toUTC();
+    QDateTime btime = file.fileTime(QFile::FileBirthTime).toUTC();
+    QDateTime ctime = file.fileTime(QFile::FileMetadataChangeTime).toUTC();
+    QDateTime atime = file.fileTime(QFile::FileAccessTime).toUTC();
+
+    QDateTime after = QDateTime::currentDateTimeUtc().toUTC().addMSecs(250);
+    // round msecs up
+    after.setSecsSinceEpoch(after.toSecsSinceEpoch() + 1);
+
+    // mtime must be valid, the rest could fail
+    QVERIFY(mtime <= after && mtime >= before);
+    QVERIFY(!btime.isValid() || (btime <= after && btime >= before));
+    QVERIFY(!ctime.isValid() || (ctime <= after && ctime >= before));
+    QVERIFY(!btime.isValid() || (btime <= after && btime >= before));
+
+    QVERIFY(file.setFileTime(before.addSecs(-10), QFile::FileModificationTime));
+    mtime = file.fileTime(QFile::FileModificationTime).toUTC();
+    QCOMPARE(mtime, before.addSecs(-10));
+
     file.reset();
     QFile compare(file.fileName());
     compare.open(QIODevice::ReadOnly);
     QCOMPARE(compare.readAll() , data);
-    file.close();
+    QCOMPARE(compare.fileTime(QFile::FileModificationTime), mtime);
 }
 
 void tst_QTemporaryFile::openCloseOpenClose()
@@ -407,17 +468,19 @@ void tst_QTemporaryFile::size()
 {
     QTemporaryFile file;
     QVERIFY(file.open());
-    QVERIFY(file.exists());
     QVERIFY(!file.isSequential());
     QByteArray str("foobar");
     file.write(str);
-    QVERIFY(QFile::exists(file.fileName()));
+
     // On CE it takes more time for the filesystem to update
     // the information. Usually you have to close it or seek
     // to get latest information. flush() does not help either.
     QCOMPARE(file.size(), qint64(6));
     file.seek(0);
     QCOMPARE(file.size(), qint64(6));
+
+    QVERIFY(QFile::exists(file.fileName()));
+    QVERIFY(file.exists());
 }
 
 void tst_QTemporaryFile::resize()
@@ -814,6 +877,14 @@ void tst_QTemporaryFile::QTBUG_4796()
         QCOMPARE(file5.open(), openResult);
         QCOMPARE(file6.open(), openResult);
 
+        // force the files to exist, if they are supposed to
+        QCOMPARE(!file1.fileName().isEmpty(), openResult);
+        QCOMPARE(!file2.fileName().isEmpty(), openResult);
+        QCOMPARE(!file3.fileName().isEmpty(), openResult);
+        QCOMPARE(!file4.fileName().isEmpty(), openResult);
+        QCOMPARE(!file5.fileName().isEmpty(), openResult);
+        QCOMPARE(!file6.fileName().isEmpty(), openResult);
+
         QCOMPARE(file1.exists(), openResult);
         QCOMPARE(file2.exists(), openResult);
         QCOMPARE(file3.exists(), openResult);

diff --git a/tests/auto/network/access/qnetworkdiskcache/tst_qnetworkdiskcache.cpp b/tests/auto/network/access/qnetworkdiskcache/tst_qnetworkdiskcache.cpp
@@ -281,6 +281,7 @@ void tst_QNetworkDiskCache::clear()
     // don't delete files that it didn't create
     QTemporaryFile file(cacheDirectory + "/XXXXXX");
     if (file.open()) {
+        file.fileName();    // make sure it exists with a name
         QCOMPARE(countFiles(cacheDirectory).count(), NUM_SUBDIRECTORIES + 3);
         cache.clear();
         QCOMPARE(countFiles(cacheDirectory).count(), NUM_SUBDIRECTORIES + 3);