QSignalSpy using a QSharedPointer signal?

[Calicoder]

Good day fellow QT coders, hope your code compiles well. I've been reading up on using QTtest and how unit testing works overall. Been a fun last 2 days. I've noticed that QSIgnalSpy doesn't like when I use QSharedPointers to call the signal though.

void UnitTest::checkSignal()
{
	QSharedPointer<ClassBegin> begin;
	QSignalSpy beginSpy(&begin, &ClassBegin::update); <---- 
}

I keep getting a C++ a nonstatic member reference must be relative to a specific object error at the <---- line above. I didn't see it anywhere in the docs but can QSignalSPy use QSharedPointers?

Appreciate the help, thank you!

[SGaist]

Hi,

You need to connect it to the object that is hold by the shared pointer not by the pointer.

[Calicoder]

@SGaist Thanks for the quick reply. So the code would look like this if I'm understanding your answer?

void UnitTest::checkSignal()
{
	QSharedPointer<ClassBegin> begin;
	QSignalSpy beginSpy(&begin, SIGNAL(&begin->update)); 
}

[SGaist]

No

connect(begin.data(), ...)

But you can only do this once you put something in the QSharedPointer so you might as well do a normal connect call when you set the object in "begin".

You cannot "preemptlively" connect.

[Calicoder]

@SGaist Ahhh ok that makes sense. Perfect, thanks so much