As reported on Github the test
fails with Java 9.
This is linked to http://java9.wtf/xml-transformer/ and JDK-8173457 + JDK-8087303 but I don't know how to fix it.
Maybe Nicolai can help?
java version "9.0.1"Java(TM) SE Runtime Environment (build 9.0.1+11)Java HotSpot(TM) 64-Bit Server VM (build 9.0.1+11, mixed mode)