rspec の matcher を irb 上で試す
$ irb 1.9.2p290 :001 > require 'rubygems' => false 1.9.2p290 :002 > require 'rspec-expectations' => true 1.9.2p290 :003 > 1.should == 1 => true
$ irb 1.9.2p290 :001 > require 'rubygems' => false 1.9.2p290 :002 > require 'rspec-expectations' => true 1.9.2p290 :003 > 1.should == 1 => true