JUnit is a unit testing framework for Java programming language. It plays a crucial role test-driven development, and is a family of unit testing frameworks collectively known as xUnit.

JUnit is a Regression Testing Framework used by developers to implement unit testing in Java, and accelerate programming speed and increase the quality of code.

Let us now have a basic example to demonstrate the step-by-step process of using JUnit.

What is JUnit ? JUnit is a unit testing framework for Java programming language. It plays a crucial role test-driven development, and is a family of unit testing frameworks collectively known as xUnit.

Features of JUnit JUnit is an open source framework, which is used for writing and running tests. Provides annotations to identify test methods. Provides assertions for testing expected results. …

Next, create a java class file named TestRunner.java in C:\>JUNIT_WORKSPACE to execute annotations.

Here we will see one complete example of JUnit testing using POJO class, Business logic class, and a test class, which will be run by the test runner.

JUnit 4 has introduced a new feature called parameterized tests. Parameterized tests allow a developer to run the same test over and over again using different values. There are five steps that you need to …

In JUnit, both @RunWith and @Suite annotations are used to run the suite tests. This chapter takes an example having two test classes, TestJunit1 & TestJunit2, that run together using Test Suite.

JUnit is a framework for Java, so the very first requirement is to have JDK installed in your machine.