how to test slot using QTest?

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:

Code:

---

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 ..."
    )
}

---

Any ideas about it?

Thanks advance for your help.

Best regards,
hb

Take a look at qWait and/or QEventLoop.

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

Do you have the event loop running?

Hi Wysota,

How to running the event loop?

I run the test using

Code:

---

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);
    }

---

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.

Hi Wysota,

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

attach the codes ,hope will help others:

Code:

---

///////////////////////////////////////////
//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"

---

Best regards,
hb