[rspec-users] Rspec and rails: Problems while testing libraries in the lib directory

[David Chelimsky]

On Wed, Sep 15, 2010 at 4:36 AM, nesterukD at gmail.com
<nesterukd at gmail.com> wrote:
> I have some classes in the lib directory, and I want to test it. My
> class which I want to test looks like:
>
> class StatAggregation
>  class << self
>    def skills_rate(user_id)
>      user_id = User.find_by_id(user_id)
>      ...
>    end
>  end
> end
>
> I created spec:
>
> require File.expand_path(File.dirname(__FILE__) + '/../../
> spec_helper')
>
> describe StatAggregation do
>  fixtures [
>    :users
>  ]
>
>  describe 'skills_rate method' do
>    it 'should work' do
>      @user_id = 1
>      @user = mock_model(User)
>
> User.should_receive(:find_by_id).with(@user_id).and_return(@user)
>      ...
>      StatAggregation.skills_rate(@user_id)
>    end
>  end
> end
>
> It works ok, but it doesn't show where appeared error:
>
> 1)
> ArgumentError in 'PxStatAggregation skills_rate method should work'
> wrong number of arguments (1 for 0)
> script/spec:10:
>
> Finished in 0.326331 seconds
>
> How to get number of line where appeared error "wrong number of
> arguments (1 for 0)"?

Use the -h flag on the [r]spec command (rspec for rspec-2, spec for
rspec-1) to learn about the command line options:

# rspec-1
spec -h

# rspec-2
rspec -h

In either case you'll see a -b flag to get a full backtrace:

# rspec-1
spec spec -b

# rspec-2
rspec spec -b

HTH,
David