how to test slot using QTest?

[hashb]

Hi All,

I want to test a http application using QTest, my purpose is to
get contents from a url ,and check whether the content is as expected.

the code something like:

class testHttp : public QObject
{
    Q_OBJECT
private slots:
    void testGet();
    void compareConfig();
private:
    CMyhttp *_myhttp;
};
 
void initTestCase()
{
    _myhttp = new CMyhttp ;
 
}
 
void testGet()
{
    _myhttp->get("some url");
    //here I need to wait until the contents returned from web server,
    //but it seemed that qtest lib will not wait
    connect(_myhttp ,SIGNAL(finished()),this,SLOT(compareConfig())); 
}
 
void compareConfig()
{
    QCOMPARE
    (
        _myhttp.content = "content expected ..."
    )
}

class testHttp : public QObject
{
    Q_OBJECT
private slots:
    void testGet();
    void compareConfig();
private:
    CMyhttp *_myhttp;
};

void initTestCase()
{
    _myhttp = new CMyhttp ;

}

void testGet()
{
    _myhttp->get("some url");
    //here I need to wait until the contents returned from web server,
    //but it seemed that qtest lib will not wait
    connect(_myhttp ,SIGNAL(finished()),this,SLOT(compareConfig())); 
}

void compareConfig()
{
    QCOMPARE
    (
        _myhttp.content = "content expected ..."
    )
}

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Any ideas about it?

Thanks advance for your help.

Best regards,
hb

[wysota]

Take a look at qWait and/or QEventLoop.

[hashb]

Hi Wysota,

Thanks a lot for your reply,
I tried qtest:qwait, but it seemed it does help,
after execute qwait,the network process also blocked.

Best regards,
hb

[wysota]

Do you have the event loop running?

[hashb]

Hi Wysota,

How to running the event loop?

I run the test using

class testHttp : public QObject
{
    Q_OBJECT
private slots:
    void testGet();
    void compareConfig();
private:
    CMyhttp *_myhttp;
};
 
void testHttp::initTestCase()
{
    _myhttp = new CMyhttp ;
 
}
 
void testHttp::testGet()
{
    _myhttp->get("some url");
    connect(_myhttp ,SIGNAL(finished()),this,SLOT(compareConfig()));
    QTest::qSleep(5000); 
}
 
void testHttp::compareConfig()
{
    QCOMPARE
    (
        _myhttp.content = "content expected ..."
    )
}
 
    int main()
    {
         testHttp ts3;
         QTest::qExec(&ts3);
    }

class testHttp : public QObject
{
    Q_OBJECT
private slots:
    void testGet();
    void compareConfig();
private:
    CMyhttp *_myhttp;
};
 
void testHttp::initTestCase()
{
    _myhttp = new CMyhttp ;
 
}
 
void testHttp::testGet()
{
    _myhttp->get("some url");
    connect(_myhttp ,SIGNAL(finished()),this,SLOT(compareConfig()));
    QTest::qSleep(5000); 
}
 
void testHttp::compareConfig()
{
    QCOMPARE
    (
        _myhttp.content = "content expected ..."
    )
}

    int main()
    {
         testHttp ts3;
         QTest::qExec(&ts3);
    }

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[wysota]

In that case you don't have an event loop running and network will not work. You need an application object. Take a look at QTEST_MAIN.

[hashb]

Hi Wysota,

Thank you very much for your help ,it works now!

attach the codes ,hope will help others:

///////////////////////////////////////////
//head  file
///////////////////////////////////////////
#include <QHttp>
#include <QHttpResponseHeader>
#include <QString>
class hp:public QHttp
{
    Q_OBJECT
public:
    hp();
    QString data;
signals:
    void ok();
public slots:
    void done(bool);
};
 
///////////////////////////////////////////
//cpp file
///////////////////////////////////////////
#include <QDebug>
#include "hp.h"
hp::hp()
{
   connect(this, SIGNAL(done(bool)), this, SLOT(done(bool)));
 
}
void hp::done( bool)
{
    data=readAll().mid(0,10);
    qDebug()<<data<<endl;
    emit ok();
}
 
//////////////////////////////////////
// test main
//////////////////////////////////////
#include <QtTest>
#include <QtCore>
 #include <QSignalSpy>
#include "hp.h"
 
class testDate: public QObject
{
   Q_OBJECT
private slots:
   void testValidity();
};
 
void testDate::testValidity()
{
    hp h;
    h.setHost("webserver");
    h.get("url");
    QSignalSpy spy(&h, SIGNAL(ok()));
    while (spy.count() == 0)
        QTest::qWait(200);
    QVERIFY( h.data == "expected data" );
}
 
 
 
QTEST_MAIN(testDate)
#include "t.moc"

///////////////////////////////////////////
//head  file
///////////////////////////////////////////
#include <QHttp>
#include <QHttpResponseHeader>
#include <QString>
class hp:public QHttp
{
    Q_OBJECT
public:
    hp();
    QString data;
signals:
    void ok();
public slots:
    void done(bool);
};

///////////////////////////////////////////
//cpp file
///////////////////////////////////////////
#include <QDebug>
#include "hp.h"
hp::hp()
{
   connect(this, SIGNAL(done(bool)), this, SLOT(done(bool)));

}
void hp::done( bool)
{
    data=readAll().mid(0,10);
    qDebug()<<data<<endl;
    emit ok();
}

//////////////////////////////////////
// test main
//////////////////////////////////////
#include <QtTest>
#include <QtCore>
 #include <QSignalSpy>
#include "hp.h"

class testDate: public QObject
{
   Q_OBJECT
private slots:
   void testValidity();
};

void testDate::testValidity()
{
    hp h;
    h.setHost("webserver");
    h.get("url");
    QSignalSpy spy(&h, SIGNAL(ok()));
    while (spy.count() == 0)
        QTest::qWait(200);
    QVERIFY( h.data == "expected data" );
}



QTEST_MAIN(testDate)
#include "t.moc"

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Best regards,
hb