error with unit tests and EdgeRails

Hi,

Recently when attempting to run unit tests whin edge rails, I have
started to recive the following error.

rake aborted!
undefined method `dump_schema_information' for
#<ActiveRecord::ConnectionAdapters::MysqlAdapter:0x44d3bf0>

After doing a search for the dump_schema_information method, it is found
to only appear in databases.rake file (line 261)

Has anyone got any suggestions to why this method is now missing?

Thanks