I've patched Rails active_record's tests so I can run them from JRuby and there are three tests that crash JRuby when running them with activerecord-jdbcmysql-adapter.

It could be jruby or the jdbc adapter ... not sure yet.

I've got more details on the activerecord-jdbc list at kenai here (including a patch for active_record which is a start at making it easy to run the tests in jruby):


http://kenai.com/projects/activerecord-jdbc/lists/dev/archive/2008-12/message/0

These are the tests where jruby crashes during test:

jruby -S rake test_jdbcmysql TEST=test/cases/base_test.rb
jruby -S rake test_jdbcmysql TEST=test/cases/serialization_test.rb
jruby -S rake test_jdbcmysql TEST=test/cases/xml_serialization_test.rb

These are run from the active_record dir from a git clone of rails and with my jruby-jdbc testing patch applied.

The last error in the stack trace is the same for all three crashes:

  java.lang.NoClassDefFoundError: org/jruby/util/collections/IntHashMap

An example of the full stack trace produced when running:

  jruby -S rake test_jdbcmysql TEST=test/cases/base_test.rb

is here:

  http://pastie.org/347552

Tests were with svn rev 8463 of JRuby.

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