Rails - Dec 2010 - Testing scopes with proxy_options in Rails 3

Greetings
I''m converting an rails 2 app to rails 3 and am having a time trying to
update tests on some named_scopes.  I''ve search and searched and cannot
find anything that explains what I need to do.  We are not using rspec
so I need to know if there is another way to convert these named scopes.

The problem seems to be with the proxy_options.

My Test:

class ClassInstructorTest < ActiveSupport::TestCase
  test "named_scope :find_instructor_for_a_course" do
    expected = { :select => "instr_id, netid",
              :conditions => ["crs_no = ? AND
                               term = ? AND
                               class_type = ? AND
                               class_no = ?", ''HA5503'',
''F10'', ''LEC'', 1]
}
    assert_equal expected,
ClassInstructor.find_instructor_for_a_course(''HA5503'',
''F10'', ''LEC'',
1).proxy_options
   end
end

I get the following error when running my test:

1) Error:
test_named_scope_:find_instructor_for_a_course(ClassInstructorTest):
NoMethodError: undefined method `proxy_options'' for
[#<ClassInstructor
instr_id: "SMITH", netid:
"hms25">]:ActiveRecord::Relation
    /test/unit/class_instructor_test.rb:10:in
`test_named_scope_:find_instructor_for_a_course''

Can anyone show me how to rewrite this test?
Thanks in advance.
--jc

-- 
Posted via http://www.ruby-forum.com/.

-- 
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en.

I figured out that I needed to change how I was testing my scope. 
Another forum site had this post by a guy named Ian (thanks Ian).
>> Ideally your unit tests should treat models (classes) and instances
thereof as
black boxes. After all, it''s not really the implementation you care
about but the
behavior of the interface.
>> So instead of testing that the scope is implemented in a particular way
(i.e.
with a particular set of conditions), try testing that it behaves correctly—that
it returns instances it should and doesn''t return instances it
shouldn''t.
----

This led me to believe I needed to change to testing the behavior not 
the stucture.  I kept my scope the same but changed my test to the 
following.  It works, is a good test of the data tested and the results 
expected.  In the test, I create an array of the instructor''s name and 
netid and compare that to an array of the name and netid returned by my 
scope.

require ''test_helper''
class ClassInstructorTest < ActiveSupport::TestCase
  test "named_scope :find_instructor_for_a_course returns name and 
netid" do
    expected = [''HOLLIS'', ''rbh25'']
    assert_equal expected, 
[ClassInstructor.find_instructor_for_a_course(''HA5503'',
''F10'', ''LEC'',
1).first.instr_id,
                           
ClassInstructor.find_instructor_for_a_course(''HA5503'',
''F10'', ''LEC'', 1).first.netid]
   end
end

-- 
Posted via http://www.ruby-forum.com/.

-- 
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en.