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GDBusConnection sets the closed flag in the worker thread, then adds an idle callback (which refs the Connection) to signal this in the main thread. The tests session_bus_down doesn't spin the mainloop, so the "closed" signal will always fire if iterating the mainloop later (and drops the ref when doing so). But _is_closed can return TRUE even before signalling this, in which case the "closed" signal isn't fired and the ref isn't dropped, causing the test to fail. Instead simply always wait for the closed signal, which is a good thing to check anyway and ensures the ref is closed. Bug: https://bugzilla.gnome.org/show_bug.cgi?id=661896 Reviewed-by: Matthias Clasen <mclasen@redhat.com>
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