[rspec-users] Need help using URL helpers in controller tests

Matt Wynne matt at mattwynne.net
Fri Oct 10 04:04:08 EDT 2008

On 9 Oct 2008, at 20:24, Christopher Bailey wrote:

> I have a controller test, where I want to do a GET on a page.  Our  
> URL's are complex, and need to be correct (duh, but we allow some  
> slop, but that causes a redirect which I want to avoid).  Anyway, in  
> my controller test I do a get to the URL that is produced by a  
> helper method which calls a named route URL helper.  This is not  
> working, and I'm wondering why/what I'm messing up.  Here's the line  
> in the spec code that starts things off (@widget is a real  
> ActiveRecord object):
>       get @controller.widget_path_for_seo(@widget)
> The widget_path_for_seo method is defined in our  
> ApplicationController.  It digs some info out of the widget instance  
> that then get passed to the named route URL helper method, so it  
> looks like this:
>   def widget_path_for_seo(widget)
>     location = seo_name_for_url widget.location.name
>     building =  
> seo_name_for_url(building_name_for_seo_url(widget.building), true) +  
> "-widgets"
>     widget_id = seo_name_for_url(widget.name) + "-" + widget.id.to_s
>     seo_widget_path(:location => location, : building =>  
> building, :id => widget_id)
>   end
> It's the "seo_widget_path" named route helper method that is  
> failing.  I've checked that all values going into it are valid, but  
> the error I get is in ActionController::Base.url_for, where it's  
> looking at the options hash of values that are passed in, and doing  
> this:
>             @url.rewrite(rewrite_options(options))
> It compalins that @url is nil.  I'm wondering if this is due to  
> being run under the test environment or what I'm missing/not  
> realizing, etc.  What's strange is that some of the restful resource  
> route url helpers work fine.  Can anyone clue me in?
> -- 
> Christopher Bailey
> Cobalt Edge LLC
> http://cobaltedge.com

Quick thought - it doesn't look like you have 'spun' up the routes  
when you test this method. If you haven't already made a get/post  
request through the rails integration session infrastructure the named  
routes don't get loaded, and that can be quite confusing. I'm not sure  
if that could be the cause of your issue but I thought it was worth  

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