The unit test suite fails on my machine (OS X) because the following three files have hardcoded references to the path c:/tmp/x.ser:
TurboKVMapBasicTest.java
WritableTurboKVMapBasicTest.java
WritableWritableMapBasicTest.java
Changing the expressions new File("c:/tmp/x.ser") to new File(dbPath, "/x.ser") fixes all the failures.