tst_qmodbusdevice.cpp

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// Copyright (C) 2017 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

#include <QtTest/QtTest>

#include <QtSerialBus/qmodbusdevice.h>

class DummyDevice : public QModbusDevice

    Q_OBJECT

    friend class tst_QModbusDevice;

public:

    DummyDevice()

        qRegisterMetaType<QModbusDevice::State>("QModbusDevice::State");

protected:

    bool open() override { return openState; }

    void close() override {}

    bool openState = false;

};

class tst_QModbusDevice : public QObject

    Q_OBJECT

private slots:

    void initTestCase();

    void cleanupTestCase();

    void connectDevice();

    void disconnectDevice();

    void state();

    void error();

private:

    DummyDevice *device;

};

void tst_QModbusDevice::initTestCase()

    device = new DummyDevice();

void tst_QModbusDevice::cleanupTestCase()

    delete device;

void tst_QModbusDevice::connectDevice()

    device->openState = false;

    QVERIFY(!device->connectDevice());

    QCOMPARE(device->state(), QModbusDevice::UnconnectedState);

    device->openState = true;

    QVERIFY(device->connectDevice());

    QCOMPARE(device->state(), QModbusDevice::ConnectingState);

    device->disconnectDevice();

    QCOMPARE(device->state(), QModbusDevice::ClosingState);

    device->setState(QModbusDevice::ClosingState);

    QVERIFY(!device->connectDevice());

void tst_QModbusDevice::disconnectDevice()

    //see QTBUG-66648

    DummyDevice dev;

    QCOMPARE(dev.state(), QModbusDevice::UnconnectedState);

    dev.disconnectDevice();

    QCOMPARE(dev.state(), QModbusDevice::UnconnectedState);

void tst_QModbusDevice::state()

    device->setState(QModbusDevice::ConnectedState);

    QCOMPARE(device->state(), QModbusDevice::ConnectedState);

    QSignalSpy spy(device, &DummyDevice::stateChanged);

    device->setState(QModbusDevice::UnconnectedState);

    QCOMPARE(device->state(), QModbusDevice::UnconnectedState);

    device->setState(QModbusDevice::UnconnectedState);

    QCOMPARE(device->state(), QModbusDevice::UnconnectedState);

    QCOMPARE(spy.size(), 1);

void tst_QModbusDevice::error()

    QCOMPARE(device->error(), QModbusDevice::NoError);

    QVERIFY(device->errorString().isEmpty());

    QString errorString("error string");

    device->setError(errorString, QModbusDevice::ConnectionError);

    QCOMPARE(device->error(), QModbusDevice::ConnectionError);

    QCOMPARE(device->errorString(), errorString);

QTEST_MAIN(tst_QModbusDevice)

#include "tst_qmodbusdevice.moc"