Using erb in fixture to dynamically find a foreign key

Hi,

I have some unit tests that run perfectly when running the individual test but
not when run via "rake test_units" ... here is a snippet from my fixture:

first:
    id: 1
    state_id: <%= State.find_by_name('Ontario').id %>

In my unit test for clubs I do load the related fixtures:

  fixtures :states, :clubs

Run test directly ...

  fraser@xxx:~/src/yyy$ ruby test/unit/club_test.rb
  ...
  1 tests, 32 assertions, 0 failures, 0 errors

Run test via "rake test_units" ...

  1) Error:
  test_fixtures(ClubTest): Fixture::FormatError: a YAML error occured
  parsing /home/fraser/src/naasc/config/../test/fixtures/clubs.yml. Please
  note that YAML must be consistently indented using spaces. Tabs are not
  allowed. Please have a look at http://www.yaml.org/faq.html
  The exact error was: RuntimeError: Called id for nil, which would mistakenly
  be 4 -- if you really wanted the id of nil, use object_id

Can anyone point out where I'm going wrong? It is rails 1.1.6, ruby 1.8.4,
postgresql, foreign key constraints are being enforced at db level (as well
as in models of course).

Thx!