Testing app's CPP files

AkshayFP

I have a project which looks like:

root.pro
|- UI.pro
|   |- systemversion.cpp
|   `- systemversion.h
`- TestUI.pro 
    |- test_systemversion.cpp
    `- test_systemversion.h

In TestUI.pro the configuration looks something like this:

QT += testlib qmltest
QT -= gui

CONFIG += qt console warn_on depend_includepath testcase qmltestcase
CONFIG -= app_bundle
CONFIG += c++17

TEMPLATE = app

INCLUDEPATH += ../UI
DEPENDPATH += $${INCLUDEPATH}

SOURCES += \
    main.cpp \
    test_systemversion.cpp

HEADERS += \
    test_systemversion.h

When I run the build step I get this error:

undefined reference to `SystemVersion::SystemVersion(QObject*)

This is happening because I am not able to link the library of UI. I can't actually do that because UI is of type TEMPLATE=app and this doesn't produce a shared object.

How should I test those files when I can't link the shared object?

Christian Ehrlicher

Then either add systemversion.cpp to your test sources or build a (static) lib inside UI.pro.
This lib can then be used to a) link to your test executable and b) together with a main.cpp to create the real executable.