Packages 
Package Description
org.hamcrest.core
Fundamental matchers of objects and values, and composite matchers.
org.junit
Provides JUnit core classes and annotations.
org.junit.matchers  
org.junit.runner
Provides classes used to describe, collect, run and analyze multiple tests.
org.junit.runner.manipulation
Provides classes to filter or sort tests.
org.junit.runner.notification
Provides information about a test run.
org.junit.runners
Provides standard Runner implementations.