Getting strange errors using Unit tests

nickqu

The vector is filled correctly. It all works fine. While I was doing some debugging:

 cout << "vector A size: " << a.size() << endl;

displayed the correct size value of the vector. Before I am doing

Test test; 
QTest::qExec(&test);

But the getter simply returns 0 in the test. I don't know why...

jsulm

@nickqu Where do you fill the vector? You do not fill it in the constructor, right? And on_actionDatei_einlesen_triggered() is not called in your test.
Can you show your getter?

nickqu

No, I fill the vector in the fillVectors() function.

Is it necessary that I call on_actionDatei_einlesen_triggered() in my test? Because I am running the program and choosing a file from the .txt system. So I trigger the function which takes the .txt file processes it and fills the vector(s). And then I am exec. the test?

The getter function is simly:
``
int TravelAgency::getSizeOfVectorA(){ return a.size(); }

jsulm

@nickqu said in Getting strange errors using Unit tests:

Is it necessary that I call on_actionDatei_einlesen_triggered()

It is necessary that the vector gets filled somehow and in the test code you posted I don't see anything like that.
Where do you fill the vector in this code:

void Test::testCompany(){
    TravelAgency* t = new TravelAgency();
    int sizeA= t->getSizeOfVectorA();
    QCOMPARE(sizeA,5);
}

?

nickqu

The vectors don't get filled in the test. They get filled in te while loop in on_actionDatei_einlesen_triggered() function with the fillVectors() function.

The way that I was expecting it was this: I run the programm. The Programm Window opens. I choose a file. The while loop fills the vector(s) with the fillVectors() method.
Until now it works, because

cout << "vector A size: " << a.size() << endl;

right after the while loop, displays the correct vector size.

Now I execute the test

Test test; 
QTest::qExec(&test);

And the getter function returns the correct vector size in the test.

jsulm

@nickqu said in Getting strange errors using Unit tests:

The way that I was expecting it was this: I run the programm. The Programm Window opens. I choose a file. The while loop fills the vector(s) with the fillVectors()

This is not how unit tests work.
There should not be any interaction with users.
Why don't you simply call on_actionDatei_einlesen_triggered() in the test before checking the vector size?

nickqu

@jsulm thanks, it works now. But how can I make it, so that in the test on_actionDatei_einlesen_triggered() ist executed, when the (menu) button was clicked? Right now I get asked to choose a file as soon as the programm starts and not when the button is clicked...

jsulm

@nickqu Take a look at https://doc.qt.io/qt-5/qtest.html
There are several mousePress overloads.

nickqu

@jsulm can you make an example? I don't understand how the mousePress overloads are goingt to help me with my case.

jsulm

@nickqu Take a look at https://doc.qt.io/qt-5/qttestlib-tutorial3-example.html