Should_receive test unexpectedly failing

Testing RSpec
1

I’m unsure why this test is still failing. I’ve tested it in console
and the code works as expected. Is there something wrong with how I
have my test written?

****************** error

  1. Job selecting the next job to be processed should lock the next job
    Failure/Error: job.should_receive(:update_attribute).with(:locked,
    true)
    (#Job:0x105496488).update_attribute(:locked, true)
    expected: 1 time
    received: 0 times

****************** job_spec.rb

it "should lock the next job" do
 job = Factory(:job, :locked => false)
 job.should_receive(:update_attribute).with(:locked, true)
 Job.next
end

****************** job.rb

def self.next
  job = incomplete.unlocked.prioritized.limit(1).first
  job.lock! if job
  job
end

def lock!
update_attribute(:locked, true)
end

def unlock!
update_attribute(:locked, false)
end

2

On Jul 22, 2010, at 10:48 AM, ericindc wrote:

   expected: 1 time

****************** job.rb

def self.next
job = incomplete.unlocked.prioritized.limit(1).first

This job object is not the same object as the on in the spec. To get
this to work, you’d have to stub like so:

Job.stub_chain(:incomplete, :unlocked, :prioritized,
:limit).and_return(job)

Personally, I wouldn’t bother, especially since you’re using a real db
backed object anyhow (Factory(:job …)). I’d just write the spec like
this:

job = Factory(:job, :locked => false)
job.next
job.should_not be_locked

Much cleaner and to the point, and less invasive (and therefore less
brittle).

HTH,
David