Adam @ Heroku
a tornado of razorblades

Rocking the Mocking

Posted by Adam Wiggins on May 02, 2008 at 02:12 PM

How do you write a spec for this method without touching the filesystem or the user's environment?

def authkey
  File.read("#{ENV['HOME']}/.ssh/id_rsa.pub")
end

Just repeat this mantra to yourself: It's Ruby. Everything Is An Object Or A Method. Objects And Methods Are Always Mutable.

Got your answer yet? Here's mine:

it "reads the ssh rsa key from the user's home directory" do
   ENV.should_receive(:[]).with('HOME').and_return('/home/joe')
   File.should_receive(:read).with('/home/joe/.ssh/id_rsa.pub').and_return('the key')
   @client.authkey.should == 'the key'
end
Tags: bdd
Hierarchy: previous, next

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Justin
posted on May 02, 2008 at 04:09 PM

I love Mocha... and lately I've been trying to follow a one expect/one test pattern. Just to see if my specs are more thorough or not.

require 'mocha'

describe User do describe 'ssh key' do it 'is found in the users home directory' do File.stubs(:read).returns('the key') ENV.expects(:[]).with('HOME').returns('/home/joe') @client.authkey.should == 'the key' end

it 'is read as an rsa key file' do
  ENV.stubs(:[]).returns('/home/joe')
  File.expects(:read).with('/home/joe/.ssh/id_rsa.pub').returns('the key')
  @client.authkey.should == 'the key'
end

end end

I have no idea if that will run or not... but IT SHOULDA hehe!

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