smartd: only start self-test if temperature is low enough?

[Célestin Matte]

Hello,
I'm using smartd with the following configuration:

/dev/sda -a -m myaddress@mydomain.com -W 4,40,45 -o on -S on -n standby,q -s (S/../.././20|L/../../6/21) -M test

The problem is, I'm often getting temperature warnings during the long self-tests, because the test itself rises the temperature too high.
Is there a way to postpone or cancel tests if chances are the test will rise the temperature too high because it's already above a certain threshold?
Another option could be to stop the test if a temperature warning is risen.