New: Basic preedit activation tests.
New: Basic preedit activation tests.

RevBy: Michal Hasselmann

For now it only tests whether expected word was selected for preedit
activation. Tests for typing in new preedit has to be written still.

This work was done by Openismus GmbH for Canonical Ltd

develersrl/maliit-demo-qml,develersrl/maliit-demo-qml,RHawkeyed/plugins,KDE/plasma-maliit-plugins,KDE/plasma-maliit-plugins,RHawkeyed/plugins,develersrl/maliit-demo-qml,maliit/plugins,RHawkeyed/plugins,develersrl/maliit-demo-qml,RHawkeyed/plugins,maliit/plugins,maliit/plugins,KDE/plasma-maliit-plugins,maliit/plugins,RHawkeyed/plugins,KDE/plasma-maliit-plugins