[Python-Dev] unittest.main() --catch parameter

[Michael Foord]

On 03/03/2011 20:31, anatoly techtonik wrote:
> I am looking at --help of test runner and asking the question: what is
> the use case for -c, --catch option?
It catches keyboard interrupt and instead of just bombing out of the 
test run it reports all the results collected so far.

Without this option interrupting a test run with a ctrl-c kills the run 
and reports nothing. Seeing an unexpected failure or error during a long 
test run and having to wait to the end of the test run to see the 
traceback can be annoying, this feature solves that problem.

> It doesn't look like it should be
> present in generic runner. I also can't find reasons to waste short
> option for it.

Nose, django and other test runners provide this option, so it is 
functionality that people seem to value.

> There will be big problems with people complaining
> about BC break even if this option is not used by anyone.
>

I don't understand this sentence, sorry.

All the best,

Michael Foord
> Usage: tests.py [options] [test] [...]
>
> Options:
>    -h, --help       Show this message
>    -v, --verbose    Verbose output
>    -q, --quiet      Minimal output
>    -f, --failfast   Stop on first failure
>    -c, --catch      Catch control-C and display results
>    -b, --buffer     Buffer stdout and stderr during test runs
>
>
> --
> anatoly t.
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