How about Squish? It's also used for release test automation of Qt.
Thank you for the suggestion! Yes we noticed Squish. But now we develop an application prototype using QML and until some milestone would like not to use commercial tools. On the other hand we don't need a thorough test coverage yet. We'd like mostly sanity tests to validate. And we want to try Qt test frameworks or implement feeding navigation commands and verification ourselves with Qt C++/QML means.