capture-output

Capture STDOUT, STDERR or other IO output and return it as a string.

This is useful for testing when you need to start a process and check its output or when you need to check current process output.

Installing

gem install capture-output

Usage

Grab STDOUT:

require 'capture-output'

out = Capture.stdout do
    Process.spawn('echo "hello world"')
    STDOUT.puts 'puts'
end
# out contains "hello world\nputs\n"

Grab STDERR:

require 'capture-output'

out = Capture.stderr do
    Process.spawn('echo "hello world" 1>&2')
    STDERR.puts 'puts'
end
# out contains "hello world\nputs\n"

Grab STDOUT and STDERR:

require 'capture-output'

err = nil
out = Capture.stdout do
    err = Capture.stderr do
        Process.spawn('echo "hello world out"')
        Process.spawn('echo "hello world err" 1>&2')
    end
end
# err contains "hello world err\n"
# out contains "hello world out\n"

Contributing to caputer-output

Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet
Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it
Fork the project
Start a feature/bugfix branch
Commit and push until you are happy with your contribution
Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.
Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.

capture-output

Installing

Usage

Contributing to caputer-output

Copyright