How to experiment with rspec from irb

Question

For example, I want to say b = double ("book") in irb and play with the result.

In irb if I say

require 'rspec' b = double("book") 

I get an error message. Ideas?

Answer 1

You can play with double RSpec parameters in irb requiring "rspec/mocks/standalone" :

 $ irb > require 'rspec/mocks/standalone' > b = double("book") => #<RSpec::Mocks::Mock:0x3fd88d0157e8 @name="book">