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diff --git a/tests/auto/installer/fileutils/tst_fileutils.cpp b/tests/auto/installer/fileutils/tst_fileutils.cpp
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+++ b/tests/auto/installer/fileutils/tst_fileutils.cpp
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+/**************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Installer Framework.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+**************************************************************************/
+
+#include <qinstallerglobal.h>
+#include <fileutils.h>
+
+#include <QObject>
+#include <QTest>
+#include <QFile>
+#include <QDir>
+
+using namespace QInstaller;
+
+class tst_fileutils : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    void testSetDefaultFilePermissions()
+    {
+#if defined(Q_OS_WIN)
+        QVERIFY(setDefaultFilePermissions(QInstaller::generateTemporaryFileName(),
+            DefaultFilePermissions::NonExecutable));
+
+        QVERIFY(setDefaultFilePermissions(QInstaller::generateTemporaryFileName(),
+            DefaultFilePermissions::Executable));
+#elif defined(Q_OS_UNIX)
+        // Need to include the "user" flags here as they will be returned
+        // by QFile::permissions(). Same as owner permissions of the file.
+        QFlags<QFileDevice::Permission> permissions(QFileDevice::ReadOwner
+            | QFileDevice::WriteOwner | QFileDevice::ReadUser | QFileDevice::WriteUser
+            | QFileDevice::ReadGroup | QFileDevice::ReadOther);
+
+        QFlags<QFileDevice::Permission> exePermissions(permissions | QFileDevice::ExeOwner
+            | QFileDevice::ExeUser | QFileDevice::ExeGroup | QFileDevice::ExeOther);
+
+        QString fileName = QInstaller::generateTemporaryFileName();
+        QFile testFile(fileName);
+
+        const QString message = "Target \"%1\" does not exists.";
+
+        // Test non-existing file
+        QTest::ignoreMessage(QtWarningMsg, qPrintable(message.arg(fileName)));
+        QVERIFY(!setDefaultFilePermissions(fileName, DefaultFilePermissions::NonExecutable));
+
+        QTest::ignoreMessage(QtWarningMsg, qPrintable(message.arg(testFile.fileName())));
+        QVERIFY(!setDefaultFilePermissions(&testFile, DefaultFilePermissions::NonExecutable));
+
+        QVERIFY(testFile.open(QIODevice::ReadWrite));
+        QVERIFY(testFile.exists());
+        testFile.close();
+
+        // Test with file name
+        QVERIFY(setDefaultFilePermissions(fileName, DefaultFilePermissions::NonExecutable));
+        QCOMPARE(QFile().permissions(fileName), permissions);
+
+        QVERIFY(setDefaultFilePermissions(fileName, DefaultFilePermissions::Executable));
+        QCOMPARE(QFile().permissions(fileName), exePermissions);
+
+        // Test with QFile object
+        QVERIFY(setDefaultFilePermissions(&testFile, DefaultFilePermissions::NonExecutable));
+        QCOMPARE(QFile().permissions(fileName), permissions);
+
+        QVERIFY(setDefaultFilePermissions(&testFile, DefaultFilePermissions::Executable));
+        QCOMPARE(QFile().permissions(fileName), exePermissions);
+
+        // Test with directory path
+        QString testDir = QDir().tempPath() + QLatin1String("/testDir");
+        QVERIFY(QDir().mkdir(testDir));
+
+        QVERIFY(setDefaultFilePermissions(testDir, DefaultFilePermissions::Executable));
+        QCOMPARE(QFile().permissions(testDir), exePermissions);
+
+        QVERIFY(QDir().rmdir(testDir));
+        QVERIFY(testFile.remove());
+#endif
+    }
+};
+
+QTEST_MAIN(tst_fileutils)
+
+#include "tst_fileutils.moc"