When using the JUnit vintage engine in combination with Maven Surefire plugin it may happen that the test classpath is sometime incomplete. In our particular case some XML Unit classes were missing on ...
java -cp ./target/spring-boot-chaos-poc-0.1.0-SNAPSHOT.jar \ -Dloader.path=chaos-monkey-spring-boot-2.0.0.jar \ org.springframework.boot.loader.PropertiesLauncher ...