Tube tests are disabled atm when building against Qt5 due to some Qt5 bugs https://bugreports.qt.nokia.com/browse/QTBUG-22898 and https://bugreports.qt.nokia.com/browse/QTBUG-22899. Once the bugs are fixed the tests must be re-enabled.
Not a blocker for 0.9.0 release, as long as we mention the issues in some way in the release announcement.
The tests are enabled in commit 662da02395052cd3db0456d10804b76579fdcdb1.
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