Vim & Vision
[ #151 ] Capture STDOUT in Perl Tests Permalink
If you are unlucky enough to be working with a sub that literally prints things out, but you would like to test what it is printing, you can intercept the prints using this lovely library:
use IO::CaptureOutput qw(capture);
my ($stdout, $stderr);
capture(sub { sub_that_prints_things($arg) }, \$stdout, \$stderr);
... now you've captured all the printed info from that sub into the two scalars!
This is very handy for testing.
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