JUnit Tests Basics and how to do unit testing in java

Junit is one of the most popular unit testing framework for java developer Junit has been important in Test driven Implementation.

Below are the Annotation which are available in Junit 4

@Test	Identifies a method as a test method
@Before	Executed before each test. It is used to prepare the test environment (e.g read input data , initialize the class)
@After	Executed after each test. It is used to cleanup the test environment.It can also save menory by cleaning up expensive memory structures.
@BeforeClass	Executed once, before the start of all the tests. Methods marked with this annotation need to be definedas static to work with Junit.
@AfterClass	Executed once after all the tests have been finished. Methods annotated with this annotation need to be defined static to work with Junit.
@Ignore	Marks that the test should be disabled.
@Test(expected =Exception.class)	Fails if the method does throw the named exception.
@Test(timeout =10)	Fails if the method takes longer than 100 milliseconds.

Below is the Program where we are using the JUnit testing Basics

Thanks for reading
Noeik