Rails - Apr 2006 - Ferret failing to rebuild_index - occasionally unable to delete a file (_j.cfs)

I''m switching all my fulltext searching over to ferret using the 
acts_as_ferret plugin on windows (for development, will be deployed on 
linux).

In my tests I have a setup method as follows to ensure the index is 
reset for each test:

def setup
   Item.rebuild_index
end

This works fine for the initial few tests but then suddenly fails for 
the last few tests when it seems to be failing to delete a file.

Loaded suite E:/rails/thatsprogress/test/unit/item_test
Started
........EEEE
Finished in 8.922 seconds.

   1) Error:
test_search_for_count(ItemTest):
Errno::EACCES: Permission denied - 
E:/rails/thatsprogress/config/../index/test/Item/_j.cfs
....

Full trace included later.

It consistantly does it at this point, and looks like something is 
stopping _j.cfs from being deleted.

Any ideas on what''s going on and how to stop it?

Thanks in advance.



Full trace is as follows:

Loaded suite E:/rails/thatsprogress/test/unit/item_test
Started
........EEEE
Finished in 8.922 seconds.

   1) Error:
test_search_for_count(ItemTest):
Errno::EACCES: Permission denied - 
E:/rails/thatsprogress/config/../index/test/Item/_j.cfs
 
D:/programming/ruby/lib/ruby/gems/1.8/gems/ferret-0.9.1/lib/ferret/store/fs_store.rb:105:in
`delete''
 
D:/programming/ruby/lib/ruby/gems/1.8/gems/ferret-0.9.1/lib/ferret/store/fs_store.rb:105:in
`refresh''
 
D:/programming/ruby/lib/ruby/gems/1.8/gems/ferret-0.9.1/lib/ferret/store/fs_store.rb:104:in
`each''
 
D:/programming/ruby/lib/ruby/gems/1.8/gems/ferret-0.9.1/lib/ferret/store/fs_store.rb:123:in
`each''
 
D:/programming/ruby/lib/ruby/gems/1.8/gems/ferret-0.9.1/lib/ferret/store/fs_store.rb:123:in
`each''
 
D:/programming/ruby/lib/ruby/gems/1.8/gems/ferret-0.9.1/lib/ferret/store/fs_store.rb:104:in
`refresh''
 
D:/programming/ruby/lib/ruby/gems/1.8/gems/ferret-0.9.1/lib/ferret/store/fs_store.rb:101:in
`synchronize''
 
D:/programming/ruby/lib/ruby/gems/1.8/gems/ferret-0.9.1/lib/ferret/store/fs_store.rb:101:in
`refresh''
 
D:/programming/ruby/lib/ruby/gems/1.8/gems/ferret-0.9.1/lib/ferret/store/fs_store.rb:74:in
`new''
 
D:/programming/ruby/lib/ruby/gems/1.8/gems/ferret-0.9.1/lib/ferret/store/fs_store.rb:68:in
`synchronize''
 
D:/programming/ruby/lib/ruby/gems/1.8/gems/ferret-0.9.1/lib/ferret/store/fs_store.rb:68:in
`new''
 
D:/programming/ruby/lib/ruby/gems/1.8/gems/ferret-0.9.1/lib/ferret/index/index.rb:133:in
`initialize''
 
E:/rails/thatsprogress/config/../vendor/plugins/acts_as_ferret/lib/acts_as_ferret.rb:223:in
`new''
 
E:/rails/thatsprogress/config/../vendor/plugins/acts_as_ferret/lib/acts_as_ferret.rb:223:in
`rebuild_index''
     E:/rails/thatsprogress/test/unit/item_test.rb:15:in 
`setup_without_fixtures''
 
E:/rails/thatsprogress/config/../vendor/rails/activerecord/lib/active_record/fixtures.rb:554:in
`setup''
 
E:/rails/thatsprogress/config/../vendor/rails/activerecord/lib/active_record/fixtures.rb:552:in
`setup''




-- 
R.Livsey
http://livsey.org