[mkgmap-dev] tests passing on trunk?

I have a 2 year old Mac Book Pro, running 10.7. I recently updated and installed Java 7 (from Oracle). /usr/libexec/java_home prints: /Library/Java/JavaVirtualMachines/jdk1.7.0_21.jdk/Contents/Home and I've set JAVA_HOME to that. With r2644, and a clean checkout (removing even ignored files), "ant dist" works fine and the output looks normal. Then, running 'ant test' gets me 8 failures and 13 errors out of 291 tests. So, am I using a reasonable jdk version? are these test faailures of concern (they seem to be) does this work ok for others? Thanks, Greg