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Jim Weaver

JUnit 5 is the latest incarnation of the most popular Java unit test library. This course teaches you how to unit test Java code with JUnit 5.

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JUnit 5 is the latest incarnation of the most popular Java unit test library. This course teaches you how to unit test Java code with JUnit 5.

Unit test frameworks like JUnit 5 help guide the design of your code as well as ensure that it works. In this course, Getting Started Unit Testing with JUnit 5, you'll get up to speed on the key skill of unit testing by leveraging the latest version of the popular JUnit unit test framework, JUnit 5. First, you'll learn how to validate your code with assertions and leverage JUnit 5 lifecycle methods. Next, you'll explore how to categorize tests, test exception handling, produce clear test reports, and many other JUnit 5 capabilities. Finally, you'll delve into two techniques critical to learn for unit testing - how to handle pre-existing untested code and how to drive development from a unit test. By the end of this course, you'll have the necessary knowledge to efficiently begin unit testing your own projects with JUnit 5.

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What's inside

Syllabus

Course Overview
Writing Your First Test
Writing More Complex Tests
Making Existing Code Testable
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Writing Tests First
Expanding Your Knowledge

Good to know

Know what's good
, what to watch for
, and possible dealbreakers
Meant for learners ready to dive into unit testing in Java, it offers a sturdy foundation in this critical skill
Leverages the latest version of JUnit, version 5, keeping learners up to date with industry norms
Well-structured, with modules ranging from beginner-friendly topics like writing first tests to advanced techniques like driving development from a unit test
Useful for learners looking to develop a solid foundation in unit testing practices for Java applications
Taught by an experienced instructor, Jim Weaver, this course benefits from the expertise of a seasoned professional in the field

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Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Getting Started Unit Testing with JUnit 5 with these activities:
Review object-oriented programming (OOP)
Review the fundamental principles of OOP to strengthen your understanding of Java's object-oriented features.
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  • Revise the concepts of classes, objects, and inheritance.
  • Practice creating and manipulating objects in a Java program.
  • Review polymorphism and its applications.
JUnit Concepts
Review fundamental JUnit concepts to prepare for learning about JUnit 5.
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  • Read official JUnit documentation
  • Follow JUnit tutorial on YouTube
  • Practice writing basic JUnit test cases
JUnit Discussion Forum
Engage with peers to discuss JUnit concepts, share experiences, and learn from others.
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  • Join an online forum or create a study group
  • Ask questions, share insights, and collaborate
Nine other activities
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Solve JUnit 5 coding challenges
Engage in hands-on practice by solving coding challenges that focus on testing Java code with JUnit 5.
Browse courses on JUnit 5
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  • Find online coding platforms or resources that offer JUnit 5 challenges.
  • Solve a series of JUnit 5 coding problems of varying difficulty levels.
  • Analyze the provided test cases and write corresponding JUnit 5 tests.
  • Debug and refine your test code to ensure it effectively validates the expected behavior.
JUnit Cheat Sheet
Create a quick reference guide to frequently used JUnit 5 features and syntax.
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  • Summarize key concepts and methods
  • Create a concise document or presentation
Unit Testing Challenges
Enhance your understanding by solving unit testing challenges.
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  • Solve Leetcode problems related to unit testing
  • Complete coding challenges on HackerRank
Develop a JUnit 5 testing framework for a sample project
Apply your JUnit 5 knowledge by creating a custom testing framework for a sample project, reinforcing your understanding of its features and principles.
Browse courses on JUnit 5
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  • Choose a small sample project to work with.
  • Design and implement a JUnit 5 testing framework tailored to the project's specific needs.
  • Write test cases that cover various scenarios and use JUnit 5 annotations.
  • Execute the test suite and analyze the results to ensure the framework effectively validates the project's functionality.
Advanced JUnit 5 Features
Explore advanced capabilities of JUnit 5 to enhance your testing skills.
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  • Review documentation on JUnit 5 extensions
  • Follow tutorials on using JUnit 5 with Mockito
  • Build a project to apply advanced JUnit 5 features
Unit Testing Best Practices Project
Demonstrate your understanding by applying best practices in unit testing.
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  • Develop a Java project with unit tests
  • Refactor code to improve testability
  • Follow industry-standard best practices
Mentor a junior developer in JUnit 5
Deepen your understanding of JUnit 5 while supporting a junior developer by providing guidance, answering questions, and reviewing their code.
Browse courses on JUnit 5
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  • Identify a junior developer who is interested in learning JUnit 5.
  • Set up regular mentoring sessions to provide support and guidance.
  • Review their code, provide feedback, and suggest improvements.
  • Discuss best practices, design patterns, and advanced JUnit 5 features.
JUnit Tutorial
Create a comprehensive tutorial to share your knowledge and help others learn about JUnit 5.
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  • Write a step-by-step guide
  • Include code examples and explanations
  • Publish on a blog or platform
Contribute to the JUnit 5 open-source project
Gain invaluable experience by contributing to the JUnit 5 open-source project, immersing yourself in its codebase and development process.
Browse courses on JUnit 5
Show steps
  • Familiarize yourself with the JUnit 5 codebase and contribution guidelines.
  • Identify an area where you can make a meaningful contribution.
  • Fork the JUnit 5 repository and create a pull request with your changes.
  • Collaborate with the JUnit 5 development team to refine and merge your contribution.

Career center

Learners who complete Getting Started Unit Testing with JUnit 5 will develop knowledge and skills that may be useful to these careers:
Software Engineer in Test (SET)
Software Engineers in Test (SETs) are responsible for designing and implementing testing strategies for software products. JUnit 5 is a widely-used testing framework that can help SETs to write effective and maintainable tests. This course provides a comprehensive introduction to JUnit 5, covering topics such as writing tests, working with assertions, and managing test data.
Software Developer
JUnit 5 is a valuable tool for Software Developers as it provides a framework for writing and executing tests for Java applications. This course provides a thorough understanding of JUnit 5 and its features. By completing this course, you will gain the skills necessary to write effective tests that can identify and fix issues in your software.
Quality Assurance (QA) Analyst
Quality Assurance (QA) Analysts are responsible for ensuring the quality of software products. JUnit 5 is a widely-used testing framework that can help QA Analysts to write comprehensive and effective tests. This course provides a comprehensive introduction to JUnit 5, covering topics such as writing tests, working with assertions, and managing test data.
Software Test Engineer
JUnit 5 is a powerful testing framework for Java applications. Software Test Engineers are responsible for ensuring that software meets quality standards and requirements. This course provides a comprehensive introduction to JUnit 5, covering topics such as writing tests, working with assertions, and managing test data. By taking this course, you will gain the skills and knowledge necessary to effectively test Java applications and ensure their quality.
Test Automation Engineer
Test Automation Engineers are responsible for automating software testing processes. JUnit 5 is a powerful testing framework that can help Test Automation Engineers to create and execute automated tests. This course provides a deep dive into JUnit 5, covering topics such as writing tests, working with assertions, and using annotations.
DevOps Engineer
JUnit 5 is a vital tool for DevOps Engineers as it provides a framework for writing and executing tests for Java applications. This course provides a thorough understanding of JUnit 5 and its features, including topics such as writing tests, working with assertions, and using annotations. By completing this course, you will gain the skills necessary to effectively test Java applications and ensure their quality.
Full-Stack Developer
Full Stack Developers are responsible for the entire software development lifecycle, from design to deployment. JUnit 5 is a valuable tool for Full Stack Developers as it provides a framework for writing and executing tests for Java applications. This course provides a comprehensive introduction to JUnit 5, covering topics such as writing tests, working with assertions, and managing test data.
Java Developer
JUnit 5 is a powerful testing framework for Java applications. Java Developers are responsible for developing and maintaining Java applications. This course provides a deep dive into JUnit 5, covering topics such as writing tests, working with assertions, and using annotations. By completing this course, you will gain the skills necessary to effectively test Java applications and ensure their quality.
Technical Architect
JUnit 5 is a useful tool for Technical Architects as it provides a framework for writing and executing tests for Java applications. This course provides a comprehensive introduction to JUnit 5, covering topics such as writing tests, working with assertions, and managing test data. By completing this course, you will gain the skills necessary to effectively test Java applications and ensure their quality.
IT Consultant
JUnit 5 is a valuable tool for IT Consultants as it provides a framework for writing and executing tests for Java applications. This course provides a thorough understanding of JUnit 5 and its features. By completing this course, you will gain the skills necessary to effectively test Java applications and ensure their quality.
Cloud Engineer
JUnit 5 is a valuable tool for Cloud Engineers as it provides a framework for writing and executing tests for Java applications deployed in the cloud. This course provides a comprehensive introduction to JUnit 5, covering topics such as writing tests, working with assertions, and managing test data. By completing this course, you will gain the skills necessary to effectively test Java applications in the cloud and ensure their quality.
Systems Analyst
JUnit 5 is a useful tool for Systems Analysts as it provides a framework for writing and executing tests for Java applications. This course provides a comprehensive introduction to JUnit 5, covering topics such as writing tests, working with assertions, and managing test data. By completing this course, you will gain the skills necessary to effectively test Java applications and ensure their quality.
Data Analyst
JUnit 5 is a useful tool for Data Analysts as it provides a framework for writing and executing tests for Java applications used in data analysis. This course provides a comprehensive introduction to JUnit 5, covering topics such as writing tests, working with assertions, and managing test data. By completing this course, you will gain the skills necessary to effectively test Java applications used in data analysis and ensure their quality.
Database Administrator
JUnit 5 is a useful tool for Database Administrators as it provides a framework for writing and executing tests for Java applications used in database management. This course provides a comprehensive introduction to JUnit 5, covering topics such as writing tests, working with assertions, and managing test data. By completing this course, you will gain the skills necessary to effectively test Java applications used in database management and ensure their quality.
Business Analyst
JUnit 5 may be useful for Business Analysts as it provides a framework for writing and executing tests for Java applications used in business analysis. This course provides a comprehensive introduction to JUnit 5, covering topics such as writing tests, working with assertions, and managing test data. By completing this course, you will gain the skills necessary to effectively test Java applications used in business analysis and ensure their quality.

Reading list

We've selected 12 books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in Getting Started Unit Testing with JUnit 5.
Must-read for any software developer. It provides a set of best practices for writing clean and maintainable code.
Must-read for any Java developer. It provides a wealth of advice on how to write effective Java code. The book covers topics such as object-oriented design, performance tuning, and concurrency.
Comprehensive guide to concurrency in Java. It covers topics such as thread safety, synchronization, and the Java Memory Model.
Comprehensive guide to software testing. It covers topics such as test planning, test design, and test execution.
Comprehensive guide to Android programming. It covers topics such as language fundamentals, Android programming, and testing.
Great way to learn about design patterns. It uses a friendly and engaging approach to teaching the fundamentals of design patterns.
Practical guide to unit testing with JUnit. It covers topics such as writing effective tests, using annotations, and working with different types of test data.
Great way to learn the basics of Java. It uses a friendly and engaging approach to teaching the fundamentals of the language.

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