The test doesn't work on OS X 10.9 and 10.10. It also doesn't work
on OS X 10.8, but the current CI system doesn't actually run tests
on 10.8. In the (future) event of us running tests on 10.8, this
change is required.
Change-Id: I6cbe6249aee2460353322d6f1254858238af3711
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>