Exceptions

This mini-project demonstrates the use of exceptions in the context of the Hangman game.

To run it, simply run from command line:

ruby hangman_runner.rb

Further Reading & References

The Exception class

http://www.ruby-doc.org/core-1.9.3/Exception.html

The StandardError class

Inherits from Exception class. We should technically be inheriting from this in our demo code!! http://www.ruby-doc.org/core-1.9.3/StandardError.html

Unit Testing

You can use assert_raise and assert_nothing_raised to test methods that can throw exceptions.
http://ruby-doc.org/stdlib-1.9.3/libdoc/test/unit/rdoc/Test/Unit/Assertions.html#method-i-assert_nothing_raised
http://ruby-doc.org/stdlib-1.9.3/libdoc/test/unit/rdoc/Test/Unit/Assertions.html#method-i-assert_raise

Advanced (somewhat)

You can use else and ensure and multiple rescue statements ... oh my!
See this answer on SO