Philip Withnall 67a9fbf1fa tests: Wait for memory monitor to be able to handle signals before testing ...

This fixes a race condition which frequently caused the
`memory-monitor-dbus.py` test to fail.

The registration of the `LowMemoryMonitor` object on the bus, and the
`GMemoryMonitorDBus`’s connection to the warning signal raced, such that
it was possible for the mock `LowMemoryMonitor` to emit a warning signal
before the `GMemoryMonitorDBus` proxy was listening, and hence the proxy
would never see the signal.

Fix this by explicitly synchronising the two before proceeding to the
tests.

Make the same changes in the `memory-monitor-portal.py` test too, even
though that one was not failing. This should remove the need for a 2s
wait on every test run.

Signed-off-by: Philip Withnall <pwithnall@gnome.org>

Fixes: #2887

2024-01-23 11:02:48 +00:00

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