rails/rails — pull request #7451 by frodsan (2012-08-26 21:40:07+00:00)
Title: fix order dependent test in AggregationsTest

Ensure class variable is set to nil.

It prevents the following test to fail:

def test_do_not_run_the_converter_when_nil_was_set
customers(:david).non_blank_gps_location = nil
assert_nil Customer.gps_conversion_was_run
end

Check https://github.com/rails/rails/blob/master/activerecord/test/models/customer.rb#L7
for more information.