From: Mark Volkmann <r.mark.volkmann@...>
Date: 2006-03-24T22:50:42+09:00
Subject: redirecting stdout to a String

I wrote a unit test for a method that writes to stdout. I got it to
work, but I'm not sure my approach was the best. Is there a more
recommended way to do this?

    # Create a String with a singleton write method
    # that allows it to take the place of stdout.
    actual = '''
    def actual.write(data); self << data; end
    old_stdout, $stdout = $stdout, actual

    # Invoke method to test that writes to stdout.

    $stdout = old_stdout # restore stdout

--
R. Mark Volkmann
Object Computing, Inc.