How?
By turning off the use_instantiated_fixtures feature.
But why?
Because they’re slow! Didn’t you read the comment in your test_helper.rb? Yes, this one:
# Instantiated fixtures are slow, but give you @david where otherwise you # would need people(:david). If you don't want to migrate your existing # test cases which use the @david style and don't mind the speed hit (each # instantiated fixtures translates to a database query per test method), # then set this back to true.
But what about those nice @david variables?
They must be gone. Sorry. The tests are slow because of them. The above comment explains why.

