Mockito is currently self-attaching to enable the inline-mock-maker. This will no longer work in future releases of the JDK. Please add Mockito as an agent to your build what is described in Mockito's documentation: https://javadoc.io/doc/org.mockito/mockito-core/latest/org/mockito/Mockito.html#0.3 WARNING: A Java agent has been loaded dynamically (/tmp/r/net/bytebuddy/byte-buddy-agent/1.15.3/byte-buddy-agent-1.15.3.jar) WARNING: If a serviceability tool is in use, please run with -XX:+EnableDynamicAgentLoading to hide this warning WARNING: If a serviceability tool is not in use, please run with -Djdk.instrument.traceUsage for more information WARNING: Dynamic loading of agents will be disallowed by default in a future release Mockito is currently self-attaching to enable the inline-mock-maker. This will no longer work in future releases of the JDK. Please add Mockito as an agent to your build what is described in Mockito's documentation: https://javadoc.io/doc/org.mockito/mockito-core/latest/org/mockito/Mockito.html#0.3 SLF4J(W): Class path contains multiple SLF4J providers. SLF4J(W): Found provider [org.slf4j.simpl.SimpleServiceProvider@6a1ef65c] SLF4J(W): Found provider [org.slf4j.simple.SimpleServiceProvider@72976b4] SLF4J(W): See https://www.slf4j.org/codes.html#multiple_bindings for an explanation. SLF4J(I): Actual provider is of type [org.slf4j.simpl.SimpleServiceProvider@6a1ef65c] [main] INFO org.opendaylight.infrautils.ready.karaf.internal.FunctionalityReadyNotifierImpl - FunctionalityReady now registered as (pseudo) OSGi service: org.opendaylight.infrautils.ready.karaf.internal.FunctionalityReadyNotifierTest$TestReady