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++ // Copyright (C) 2017 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++
++ #include <QtSerialBus/qmodbusrtuserialclient.h>
++
++ #include <QtTest/QtTest>
++
++ class tst_QModbusRtuSerialClient : public QObject
++ {
++ Q_OBJECT
++
++ private slots:
++ void testInterFrameDelay()
++ {
++ QModbusRtuSerialClient qmrsm;
++ QCOMPARE(qmrsm.interFrameDelay(), 2000);
++ qmrsm.setInterFrameDelay(1000);
++ QCOMPARE(qmrsm.interFrameDelay(), 2000);
++ qmrsm.setInterFrameDelay(3000);
++ QCOMPARE(qmrsm.interFrameDelay(), 3000);
++ qmrsm.setInterFrameDelay(-1);
++ QCOMPARE(qmrsm.interFrameDelay(), 2000);
++ }
++ };
++
++ QTEST_MAIN(tst_QModbusRtuSerialClient)
++
++ #include "tst_qmodbusrtuserialclient.moc"