[rspec-users] How-to spec this helper method?...

[Bart Zonneveld]

On 24 dec 2007, at 05:09, David Chelimsky wrote:

> On Dec 20, 2007 4:31 AM, Bart Zonneveld <loop at superinfinite.com>  
> wrote:
>> Hey gang,
>>
>> I have this dead-simple method defined in a helper:
>>
>>   def add_category_link(name)
>>     link_to_function name do |page|
>>       page.insert_html :bottom, :categories, :partial =>
>> 'category', :object => Category.new
>>     end
>>   end
>>
>> Where, and mostly how, would I spec this? I haven't been able to find
>> how to stub the rjs in a helper spec, so I'd appreciate any pointers
>> whatsoever..
>
> If you can spec it in a template using rjs, you can do it in a helper:
>
> describe FooHelper do
>  it "should build a category link" do
>    add_category_link(:foo).should have_rjs(...)
>  end
> end

Thanks! However, I am getting an error about 'nil.render' now, with  
this backtrace:

You have a nil object when you didn't expect it!
The error occurred while evaluating nil.render
/opt/local/lib/ruby/gems/1.8/gems/actionpack-2.0.1/lib/action_view/ 
helpers/prototype_helper.rb:956:in `render'
/opt/local/lib/ruby/gems/1.8/gems/actionpack-2.0.1/lib/action_view/ 
helpers/prototype_helper.rb:727:in `insert_html'
/Users/bartz/Documents/workspace/blog/app/helpers/admin/ 
admin_helper.rb:34:in `__instance_exec0'
/opt/local/lib/ruby/gems/1.8/gems/activesupport-2.0.1/lib/ 
active_support/core_ext/object/extending.rb:52:in `send'
/opt/local/lib/ruby/gems/1.8/gems/activesupport-2.0.1/lib/ 
active_support/core_ext/object/extending.rb:52:in `instance_exec'
/opt/local/lib/ruby/gems/1.8/gems/actionpack-2.0.1/lib/action_view/ 
helpers/prototype_helper.rb:581:in `initialize'
/opt/local/lib/ruby/gems/1.8/gems/actionpack-2.0.1/lib/action_view/ 
helpers/prototype_helper.rb:992:in `new'
/opt/local/lib/ruby/gems/1.8/gems/actionpack-2.0.1/lib/action_view/ 
helpers/prototype_helper.rb:992:in `update_page'
/opt/local/lib/ruby/gems/1.8/gems/actionpack-2.0.1/lib/action_view/ 
helpers/javascript_helper.rb:87:in `link_to_function'

No idea how to fix this :(...

thanks in advance, and happy Christmas and all!
bartz