/usr/include/qt5/QtTest/ is in qtbase5-dev 5.2.1+dfsg-1ubuntu14.
This file is owned by root:root, with mode 0o755.
..
/usr/include/qt5/QtTest/QEventSizeOfChecker
/usr/include/qt5/QtTest/QSignalSpy
/usr/include/qt5/QtTest/QSpontaneKeyEvent
/usr/include/qt5/QtTest/QTest
/usr/include/qt5/QtTest/QTestAccessibility
/usr/include/qt5/QtTest/QTestData
/usr/include/qt5/QtTest/QTestDelayEvent
/usr/include/qt5/QtTest/QTestEvent
/usr/include/qt5/QtTest/QTestEventList
/usr/include/qt5/QtTest/QTestEventLoop
/usr/include/qt5/QtTest/QTestKeyClicksEvent
/usr/include/qt5/QtTest/QTestKeyEvent
/usr/include/qt5/QtTest/QTestMouseEvent
/usr/include/qt5/QtTest/QtTest
/usr/include/qt5/QtTest/QtTestDepends
/usr/include/qt5/QtTest/QtTestGui
/usr/include/qt5/QtTest/QtTestVersion
/usr/include/qt5/QtTest/QtTestWidgets
/usr/include/qt5/QtTest/qbenchmark.h
/usr/include/qt5/QtTest/qbenchmarkmetric.h
/usr/include/qt5/QtTest/qsignalspy.h
/usr/include/qt5/QtTest/qtest.h
/usr/include/qt5/QtTest/qtest_global.h
/usr/include/qt5/QtTest/qtest_gui.h
/usr/include/qt5/QtTest/qtest_widgets.h
/usr/include/qt5/QtTest/qtestaccessible.h
/usr/include/qt5/QtTest/qtestassert.h
/usr/include/qt5/QtTest/qtestcase.h
/usr/include/qt5/QtTest/qtestdata.h
/usr/include/qt5/QtTest/qtestevent.h
/usr/include/qt5/QtTest/qtesteventloop.h
/usr/include/qt5/QtTest/qtestkeyboard.h
/usr/include/qt5/QtTest/qtestmouse.h
/usr/include/qt5/QtTest/qtestspontaneevent.h
/usr/include/qt5/QtTest/qtestsystem.h
/usr/include/qt5/QtTest/qtesttouch.h
/usr/include/qt5/QtTest/qttestversion.h