Check if the right signal is emitted on OAuth2 properties change.

Change-Id: I3f6af4a4b8be242796a22c4dbc5784423088c069
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
Remove debug code when building for checking test coverage

The change removes noise created by Q_ASSERT

Change-Id: I9058f3a8b9262be990c36d320d7c6087fb6b6fed
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
Add tests for EnginioModel::enginioChanged signal.

Change-Id: I438edd9bba4c8405fff4cde5b496b274c1497f0a
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>