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This coding exercise comes from Upcase, the online learning platform we run. It's part of the Refactoring course and is just one small sample of all the great material available on Upcase, so be sure to visit and check out the rest.
In this exercise, you'll be breaking up a class called SurveyInviter. This class contains two responsibilities: logic for sending invitations to each recipient, and logic for parsing a list of email addresses. Let's split the class into two in order to separate these responsibilities.
See an example from The Weekly Iteration.
To start, you'll want to clone and run the setup script for the repo
git clone git@github.com:thoughtbot-upcase-exercises/extract-class.git
cd extract-class
bin/setup
Extract a new class from SurveyInviter (located at lib/survey_inviter.rb) to split the recipients string into multiple email addresses. Make sure to write tests for the new class as you go.
Use the new class from SurveyInviter.
Make sure all tests are passing by running:
rake
Check out the featured solution branch to see the approach we recommend for this exercise.
If you find yourself stuck, be sure to check out the associated Upcase Forum discussion for this exercise to see what other folks have said.
When you've finished the exercise, head on back to the Refactoring course to find the next exercise, or explore any of the other great content on Upcase.
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