JUnit is a widely used open-source testing framework for Java programming language. It provides a standardized way to write and execute tests for Java applications, making it easier to ensure the correctness of your code and catch potential bugs early in the development process. JUnit helps in automating the testing process, allowing developers to define test cases, execute them, and report the results in a structured and organized manner.

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Why should one take Certificate in JUnit?

JUnit has become an essential tool for test-driven development (TDD) and continuous integration (CI) practices. It aids in maintaining code quality by providing a systematic approach to testing, reducing manual effort, and enabling faster feedback on code changes.
Vskills Certificate in JUnit provides a hands-on approach to understand the nuances of JUnit testing as well as understand JUnit to design, build, and manage test cases.

The certification attests to your understanding and applying skills and knowledge in JUnit and helps you to stand out amongst your peers to help in gaining better career prospects.

Who will benefit from taking Certificate in JUnit?

Software Testing Professional, Engineers, Team Leads, Senior QA Engineers, managers will benefit immensely by opting for Vskills Certificate in JUnit to gain an edge in the JUnit and be noticeable amongst their colleagues as well as make progress in their respective careers.

Students taking the certification also gain by showcasing their understanding of JUnit and are able to increase their job opportunities.

Companies that hire JUnit Professionals

Companies specializing in software testing or software development are constantly hiring skilled JUnit Testers. IT companies, MNCs hire JUnit Testing professionals for big data application testing related tasks. Companies employing JUnit Testing professionals include Google, TCS, Accenture, IBM, Tech Mahindra, GE, Amex, Deloitte, Wipro, TCS, etc.

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TABLE OF CONTENT

Unit Testing Basics

What is Unit Testing?
What is JUnit?
Introducing a Simple Unit Test in JUnit
Structure of a Unit Test (Arrange-Act-Assert and Given/When/Then)
Conventions for Writing Unit Tests
Characteristics of Proper Unit Tests
What are Assertions?

Creating a Java Project Using JUnit

Creating a Java Project Using the Maven Quickstart Archetype in JUnit
Introducing a Typical Java Project Structure (Production vs Test Source Trees)
Understanding the Basic Conventions for Creating Unit Tests (Package and Naming)

Writing and Running Unit Tests with JUnit and IntelliJ IDEA

Creating a Test Method with @Test Annotation
Running a Unit Test Within the Integrated Development Environment (IDE) and Understanding Test Success
Understanding Test Failures with Exceptions
Failing a Unit Test Explicitly with Assert.Fail()
Using Assert.Fail() to Check Validation Logic in a Try/Catch
Introduction to the JUnit Assertions API
Structuring Unit Tests with Arrange-Act Assert
Understanding the Execution of Assertions and JUnit's Fail-fast Test Failure Mechanism
Adding Descriptive Comments to Assertions and Test Failures to Aid Diagnostics
Coding a Unit Test Following Arrange-Act-Assert
Keeping Test Setup (Don't Repeat Yourself) DRY with @Before
Understanding Test Fixture Instantiation

Using Testing with Mock Objects and Mockito

What Is Mockito and What Are Mock Objects?
Introduction to Testing with Mock Objects
Configuring Projects Using Mockito
Creating a Project Which Uses JUnit and Mockito
Coding a Layered Architecture - Presentation Layer
Coding a Layered Architecture - Business Layer
Coding a Layered Architecture - Persistence Layer
Putting the Correct Packages in Place to Respect the layering
Writing a Test for the Login Controller in the Presentation Layer
Understanding the Test Fixture Setup While Writing Mock Object-based Unit Tests
Writing a Test for the Authentication Service in the Business Layer
Thinking about Design Decisions When Unit Testing

Hamcrest Assertions Library

Evolving the Domain and Repository Classes
Ignoring Tests with @ignore
Implementing a Finder in the Repository
Implementing Business Logic in the Service
Configuring Maven to Use Java 8
Evolving the Repository Class
Adding a Parameter-driven Finder to the Service
Refactoring to Evolve a New Service
Generating Test Methods in the IDE and Toggling Between Production and Test Code
Introducing the JUnit Mockito Runner and @Mock
Analyzing the Production Code to Determine How to Write the Arrange Section
Using Mockito's @InjectMocks to Create the System Under Test with its Dependencies
Keep Yourself Motivated by Checking the Happy Path Test Output
Using the JUnit Assertions API to Write the Assert Section
Thinking about the Weaknesses of the JUnit Assertions API
Importance of Checking Your Work as You Go!
Upgrading a JUnit Project to Use the Full Hamcrest Version
Replacing JUnit Assertions with Hamcrest Assertions and Using Assertions with Collections
Understanding and Reading Hamcrest Test Failures
Quick Thoughts on Hamcrest Individual vs Collection Assertions
Do Not Invoke Unneeded Production Code in Your Test Classes
Understanding Evaluation of Hamcrest Matchers
Thinking about Keeping Production Code to a Minimum in Tests
Creating Complex Hamcrest Assertions with allOf Method and Property Matchers

Certificate in JUnit

How It Works

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