Hands-On JUnit 5 for Beginners : Unit Testing in Just 2 Days

In this video, we’ll discuss how unit testing works and why it’s different from regular testing. Learn the core concepts of testing individual units of code to ensure they perform as expected

In this video, we’ll explore the fundamentals of unit testing without relying on JUnit 5. You'll learn how unit tests work, the key concepts behind testing small units of code, and how to perform basic unit testing using plain Java. This video will lay the groundwork for using JUnit 5 later in the course.

In this video, we'll learn how to write and run JUnit 5 tests in a simple Java project without using Maven. You'll get hands-on experience in creating basic test cases, setting up JUnit 5, and executing tests. This video is perfect for getting started with JUnit 5 in a lightweight environment.

In this video, we’ll dive into the @Test annotation, a fundamental part of JUnit 5. You’ll learn how to use this annotation to define test methods, run them, and structure your tests effectively in a JUnit 5 project. This is an essential video for getting comfortable with writing and executing unit tests in JUnit 5.

In this video, we’ll explore the fundamentals of assertions in JUnit 5. You'll learn how assertions are used to verify that the expected results match the actual outcomes in your tests.

In this video, we’ll go through the step-by-step process of setting up a Maven project for JUnit 5 testing. You'll learn how to create a new Maven project, add the JUnit 5 dependency from the Maven repository, and configure the project to use a specific Java version. By the end of this video, you’ll have a fully functional Maven project ready for JUnit 5 test cases.

In this video, we’ll dive into writing and running JUnit 5 test cases within a Maven project. You’ll learn how to structure your test classes, write meaningful test cases, and execute them seamlessly using Maven. This video will guide you through the basics of integrating JUnit 5 testing into your Maven project setup.

In this video, we’ll explore how to create multiple test cases within a single file in JUnit 5. You’ll see how to structure different test methods, organize them effectively, and understand how JUnit executes each test case individually. This approach helps you cover various scenarios within one test class.

In this video, we’ll dive into Test-Driven Development (TDD) by writing tests before writing the actual code. You’ll see how starting with test cases helps guide the development process, ensures focus on requirements, and leads to more reliable, bug-free code. This is a hands-on look at how TDD can streamline development and improve code quality.

In this video, we’ll configure the Surefire plugin in a Maven project to efficiently manage and run JUnit 5 tests. You’ll learn how this plugin integrates with Maven to execute tests automatically during the build process, ensuring seamless and consistent test runs. This setup is essential for effective test management in any Maven-based Java project.

In this video, we delve deeper into the assertEquals method by exploring its overloaded version that includes a third argument for specifying a custom message. This option lets you provide helpful feedback when assertions fail, making your test results more informative and easier to debug.

In this video, we’ll focus on the assertNotEquals method in JUnit 5, which allows you to validate that two values are not equal. This assertion is essential for scenarios where verifying distinct values ensures your code functions as expected. Understanding assertNotEquals helps improve the accuracy and effectiveness of your unit tests.

In this video, we explore the assertTrue method in JUnit 5, which helps verify that a specified condition is true. This assertion is ideal for checking boolean expressions and ensuring that critical conditions hold within your code. Mastering assertTrue enables you to create more precise and reliable tests.

In this video, we’ll cover how to perform assertions on arrays in JUnit 5, allowing you to verify that arrays contain expected values in the correct order. Array assertions are crucial for testing collections of data, helping ensure accuracy and consistency in your tests. Understanding these assertions enables you to handle array comparisons effectively in your unit tests.

In this video, we’ll explore how to test for expected exceptions in JUnit 5 using the assertThrows method. You’ll learn how to write tests that confirm your code throws the correct exceptions under specific conditions, ensuring your application handles errors as expected. This technique is crucial for robust exception handling in your unit tests.

Video Description: "Ensuring Fast Code with assertTimeout"

In this video, we’ll demonstrate how to use the assertTimeout method in JUnit 5 to test the performance of your code. You'll learn how to ensure your methods execute within a specified time limit, helping you identify performance bottlenecks and ensure efficient execution in your application.

In this video, we’ll explore how to use the @DisplayName and @Disabled annotations in JUnit 5. You’ll learn how @DisplayName can improve test readability by assigning custom names to test cases, making them clearer and more descriptive. Additionally, we’ll cover @Disabled, an annotation that lets you selectively skip tests, giving you more control over which tests run. These tools are essential for organizing and managing your test suite effectively

In this video, we’ll explore how to use the @BeforeEach and @AfterEach annotations in JUnit 5 to manage setup and cleanup before and after each test case. You’ll learn how these annotations help create consistent, reliable tests by preparing a fresh environment for each test and ensuring that resources are correctly released afterward. This approach is key to maintaining isolated and independent test cases for better test reliability.

In this video, we’ll dive into the @BeforeAll and @AfterAll annotations in JUnit 5, which are designed to handle setup and teardown at the class level. You’ll learn how to use these annotations to prepare resources once before any tests run and clean up afterward, optimizing performance when setup is only needed once. This approach helps streamline your testing process and is especially useful for managing resources efficiently across multiple tests.

In this video, we’ll explore the @TestInstance annotation in JUnit 5 and its impact on test instance lifecycle. You’ll learn how to configure JUnit to create a new test instance per method (the default) or per class, optimizing test performance and resource management. This is particularly useful for scenarios where sharing state across tests is necessary. We’ll cover practical examples to help you understand how to use @TestInstance to control the test lifecycle and manage resources more efficiently at the class level.

In this video, we’ll explore how to execute tests conditionally based on the Java Runtime Environment (JRE) version and operating system. Using JUnit 5’s built-in annotations, you’ll learn how to configure tests to run only when specific JRE versions or OS conditions are met. This helps ensure your tests are environment-aware and can adapt to different configurations or platforms.

In this video, we’ll dive into the assumeTrue() method in JUnit 5 to demonstrate how assumptions can control test execution. You’ll learn how to skip tests conditionally based on specific assumptions, ensuring that tests only run when certain conditions are met. This technique helps optimize your test suite by preventing unnecessary or irrelevant tests from executing under certain circumstances.

In this video, we explore how to use the @Nested annotation in JUnit 5 to organize and group related tests within inner classes. You’ll learn how @Nested can enhance test structure, improve readability, and create a logical grouping of tests, making your test suite easier to manage and understand.

In this video, we’ll dive into the @RepeatedTest annotation in JUnit 5, which allows you to easily repeat tests multiple times. We’ll explore scenarios where test repetition is useful, and see how @RepeatedTest helps ensure code reliability and consistency under repeated execution. By the end, you’ll know how to implement repeated tests effectively in your JUnit 5 projects

In this video, we dive into JUnit 5's @ValueSource annotation to perform Parameterized Tests. You’ll learn how to test methods with different input values, making your test cases more efficient and scalable.

n this video, we dive into JUnit 5's @CSVSource annotation for Parameterized Tests. Learn how to run tests with multiple sets of data pulled directly from CSV files to streamline your testing process.