What are the semantics of the fixtures idea? I have a set of unit tests that when I run individually run fine. When I run them under "rake", the second unit test to call the same fixture doesn''t seem to actually load the data. That is, I have 2 tests; test1.rb and test2.rb, and each one calls "fixtures :foo". test1 runs, by itself, then test2 fails because it can''t find data for foo. If I run test1, then stop, then run test 2, all is well, but under rake which auto-runs both of them, test2 fails. I thought that the fixtures would seed the database with each test file, and delete them after each test. Is that not the case?