Rails - Jul 2007 - [Testing] Counting Records in Array from Query

I can''t seem to figure out how to assert in my test that my method
which
finds 5 records is in fact returning five records.

In my model:

# app/models/widget.rb
...
  def self.recent_widgets
    find(:all,
         :conditions => "created_at <= now()",
         :limit => 5,
         :order => "created_at desc")
  end

I created a widgets.yml fixture with five records in it.

In my test_widget.rb unit test I want to assert that there are in fact five
records being returned with the recent_widgets method

I''ve gone as far as:

# tests/unit/test_widget.rb
...
fixtures :widgets

  def test_find_recent_widgets
    w = widget.recent_widgets
    assert_not_nil w
  end

Any clues. Thanks!
-- 
David Andrew Thompson
http://www.davidandrewthompson.com

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On 7/11/07, David Andrew Thompson
<dandrew.thompson-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
>
> I can''t seem to figure out how to assert in my test that my method
which
> finds 5 records is in fact returning five records.
>
> In my model:
>
> # app/models/widget.rb
> ...
>   def self.recent_widgets
>     find(:all,
>          :conditions => "created_at <= now()",
>          :limit => 5,
>          :order => "created_at desc")
>   end
>
> I created a widgets.yml fixture with five records in it.
>
> In my test_widget.rb unit test I want to assert that there are in fact
> five records being returned with the recent_widgets method
>
> I''ve gone as far as:
>
> # tests/unit/test_widget.rb
> ...
> fixtures :widgets
>
>   def test_find_recent_widgets
>     w = widget.recent_widgets
>     assert_not_nil w
>   end
>
> Any clues. Thanks!
> --
> David Andrew Thompson
> http://www.davidandrewthompson.com


If you want to assert that it has 5 exactly, use the asset_equal assertion
on the array''s size.

def test_find_recent_widgets
  assert_equal 5, widget.recent_widgets.size
end

HTH
Daniel

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