From: Josh Cheek <josh.cheek@...>
Date: 2011-06-28T12:22:50+09:00
Subject: How to test code that behaves conditionally based on gem existence?

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Working on https://rubygems.org/gems/bundler-bouncer, the problem is it uses
ANSI escape sequences to colour the output, which doesn't work on Windows.
I've seen some gems that will use term-ansicolor to colour the output, if it
is present, and otherwise won't use it. That seemed easier than trying to
detect whether we were on Windows or not, but I still can't figure out how
to test something like that. Everything I've thought of has gotten really
ugly really quick. Any suggestions?

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