chef

https://github.com/opscode/chef

Ruby

A systems integration framework, built to bring the benefits of configuration management to your entire infrastructure.

Chef::Mixin::WhyRun::ResourceRequirements::Assertion#run

Runs the assertion/assumption logic. Will raise an Exception of the
type specified in #failure_message (or AssertionFailure by default)
if the requirement is not met and Chef is not running in why run
mode. An exception will also be raised if running in why run mode
and no why run message or block has been declared.

Source | Google | Stack overflow

Edit

git clone [email protected]:opscode/chef.git

cd chef

open lib/chef/mixin/why_run.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Chef--Mixin--WhyRun--ResourceRequirements--Assertion-run-for-pr

# Commit to git

git add lib/chef/mixin/why_run.rbgit commit -m "better docs for Chef::Mixin::WhyRun::ResourceRequirements::Assertion#run"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-Chef--Mixin--WhyRun--ResourceRequirements--Assertion-run-for-pr

hub pull-request

# Celebrate!