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I think the test framework is great.
One thing I find myself wanting is to have test scripts which provide informative output when called standalone, but are "quiet" when called from "runtests".
The following code helps this along:
[st, ~] = dbstack();
isBatch = strcmpi(st(end).name, 'runtests');
But this feels a bit kludgy. I could put it in a function, but maybe this, or something equivalent, could be provided with the framework.