Expect

This gem provides an except method based on the Rust method. It checks if an object has a value different from nil and raises an exception if it is equal nil, with a custom message.

Add this line to your application's Gemfile:

gem 'object_expect'

And then execute:

$ bundle

Or install it yourself as:

$ gem install object_expect

require 'object_expect'

value = 1
puts value.expect('Should have a value')
=> 1

value = nil
puts value.expect('Should have a value')
=> ObjectExpect::Error raised

After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/taq/object_expect.