The JUnit classes are essential classes that are usually utilized in testing and writing the JUnits. Here is the list of the critical JUnit test classes.
Test Suite: It is also known as a composition of various tests
Assert: It is a set of assertive procedures used to design an application
Test Result: It is associated with the collection of results while executing a test case
Test Case: It is that kind of a JUnit class which is related to various fixtures. It also has the ability to run on a variety of tests
