From: Intransition <transfire@...>
Date: 2009-09-02T16:12:59+09:00
Subject: minitest assert_throws, why rescue?

In minitest why does assert_throws rescue ArgumentError/NameError ?

  def assert_throws sym, msg = nil
      default = "Expected #{mu_pp(sym)} to have been thrown"
      caught = true
      catch(sym) do
        begin
          yield
        rescue ArgumentError => e     # 1.9 exception
          default += ", not #{e.message.split(/ /).last}"
        rescue NameError => e         # 1.8 exception
          default += ", not #{e.name.inspect}"
        end
        caught = false
      end

      assert caught, message(msg) { default }
    end

Thanks.