Guava is a suite of core and expanded libraries that include

The Apache Commons IO library contains utility classes, stream implementations, file filters,

API for SLF4J (The Simple Logging Facade for Java) which serves as a simple facade or abstraction for various logging ...

Jedis is a blazingly small and sane Redis java client.

JUnit Jupiter is the API for writing tests using JUnit 5.

Core API and libraries of hamcrest matcher framework.

Mockito mock objects library core API and implementation

PowerMock API for Mockito 2.+..

Various utilities for accessing internals of a class.

PowerMock support module for JUnit 4.x.

Binding/provider for SLF4J, which outputs all events to System.err. Only messages of level INFO and higher are printed.