from test_about_exceptions.rb Koan

about_exceptions_1.rb

class AboutExceptions

  class MySpecialError < RuntimeError
  end

  def test_rescue_clause
    result = nil
    begin
      fail "Oops"
    rescue StandardError => ex
      result = :exception_handled
    end
  end

#  assert_equal __, ex.is_a?(StandardError), "Should be a Standard Error"
#  assert_equal __, ex.is_a?(RuntimeError),  "Should be a Runtime Error"

end