How to test puts in rspec

Question

I want to do is run ruby sayhello.rb on the command line, then receive Hello from Rspec.

I\'ve got that with this:

class Hello
         


        

Answer 1

You're executing your code before entering the test block, so the expectations are not being met. You need to run the code within the test block after setting expectations (e.g. by moving the require_relative statement after the STDOUT.... statement), as follows:

describe "sayhello.rb" do
  it "should say 'Hello from Rspec' when ran" do        
    STDOUT.should_receive(:puts).with('Hello from RSpec')
    require_relative 'sayhello.rb' #load/run the file 
  end
end