comparison tests/run-tests.py @ 32621:c59451e11cbf

tests: make run-tests fail early if no channel is found

I hit a weird corner case in run-tests where a test that caused an
exception to be raised was breaking everything with an unbound
variable error a few lines down because channel was never getting set
in this for loop. By adding an `else` clause to this for loop, we can
explode right away if we can't find a channel and give the developer a
better chance at figuring out what's going on.

32620:3ce53a499334

        def job(test, result):
            for n, v in enumerate(channels):
                if not v:
                    channel = n
                    break
            channels[channel] = "=" + test.name[5:].split(".")[0]
            try:
                test(result)
                done.put(None)
            except KeyboardInterrupt:

32621:c59451e11cbf

        def job(test, result):
            for n, v in enumerate(channels):
                if not v:
                    channel = n
                    break
            else:
                raise ValueError('Could not find output channel')
            channels[channel] = "=" + test.name[5:].split(".")[0]
            try:
                test(result)
                done.put(None)
            except KeyboardInterrupt: