On Windows, there is no mysql_config. This breaks the AR tests.
$ rake test_mysql
(in c:/home/skaes/svn/trunk/activerecord)
ruby -Ilib;test;test/connections/native_mysql "c:/ruby/lib/ruby/gems/1.8/gems/rake-0.5.4/l
ib/rake/rake_test_loader.rb" "test/aaa_create_tables_test.rb" "test/adapter_test.rb" "test
/aggregations_test.rb" "test/ar_schema_test.rb" "test/associations_go_eager_test.rb" "test
/associations_test.rb" "test/association_callbacks_test.rb" "test/base_test.rb" "test/bina
ry_test.rb" "test/callbacks_test.rb" "test/class_inheritable_attributes_test.rb" "test/col
umn_alias_test.rb" "test/conditions_scoping_test.rb" "test/deprecated_associations_test.rb
" "test/deprecated_finder_test.rb" "test/finder_test.rb" "test/fixtures_test.rb" "test/inh
eritance_test.rb" "test/lifecycle_test.rb" "test/locking_test.rb" "test/migration_test.rb"
"test/mixin_nested_set_test.rb" "test/mixin_test.rb" "test/modules_test.rb" "test/multipl
e_db_test.rb" "test/pk_test.rb" "test/readonly_test.rb" "test/reflection_test.rb" "test/sc
hema_dumper_test.rb" "test/threaded_connections_test.rb" "test/transactions_test.rb" "test
/unconnected_test.rb" "test/validations_test.rb"
Using native MySQL
./test/connections/native_mysql/connection.rb:12:in ``': No such file or directory - mysql
_config --socket (Errno::ENOENT)
from ./test/connections/native_mysql/connection.rb:12
from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/loadpath_manager.rb:5:in `require__'
from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/loadpath_manager.rb:5:in `require'
from ./test/../lib/../../activesupport/lib/active_support/dependencies.rb:213:in `
require'
from ./test/abstract_unit.rb:9
from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/loadpath_manager.rb:5:in `require__'
from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/loadpath_manager.rb:5:in `require'
from ./test/aaa_create_tables_test.rb:2
from c:/ruby/lib/ruby/gems/1.8/gems/rake-0.5.4/lib/rake/rake_test_loader.rb:5:in `
load'
from c:/ruby/lib/ruby/gems/1.8/gems/rake-0.5.4/lib/rake/rake_test_loader.rb:5
from c:/ruby/lib/ruby/gems/1.8/gems/rake-0.5.4/lib/rake/rake_test_loader.rb:5:in `
each'
from c:/ruby/lib/ruby/gems/1.8/gems/rake-0.5.4/lib/rake/rake_test_loader.rb:5
rake aborted!
Command failed with status (1): [ruby -Ilib;test;test/connections/native_my...]