Qt-test-framework.md

Make a tree project

File > new > Other project > Subdirs project
this will make a folder that contains sub-projects

Add subprojects

making the first subproject will come up automatically. for other subprojects you should:
on the main tree, right-click > new subproject

if you set the build system to qmake, then the subproject will be shown under the main tree. if you use cmake it will be shown outside the main project, but don't worry, in reality, it is inside.

Add unit test

use add subproject > other project > auto test project
qmake is preferred for better visuality
make sure Generate initialization and cleanup code is selected

Relate test and app together

right-click on the test subproject and click add existing files, and add every class.h you want to be tested. a shortcut of that translation unit will be shown inside test folder

alternatively you can add this to test.pro: HEADERS += ../app/myclass.h
go to test/sources/someTest.cpp and add:
#include "../app/myclass.h"

Write the tests

inside test class, initiate an instance of that class like:
myclass *a;
inside the test functions, use the functions of the class like:
QVERIFY(a.myfunc()==1);
to only show pass or fail or
QCOMPARE(a.myfunc(),1);
to show the real vs expected values

Do the test

in the buttom pane, open test output, or use alt+8
click on the run tests for current file

if you run the project, the tests will be run also, and the output will be shown in the application output or alt+3