What is JUnit 5? JUnit 5 is actually a combination of three main elements. It’s a mix of JUnit Platform, JUnit Jupiter API, and JUnit Vintage API. Let’s break it down. JUnit Platform Think of JUnit 5 as having a solid foundation called the JUnit Platform. This platform is like the engine that gets your…
Read More What is JUnit 5? (+Video Tutorial)In this tutorial, I’m going to walk you through how to execute a JUnit 5 test case from a command-line terminal without the use of Maven or Gradle. If you’re just starting out with Java or JUnit, you’re in the right place. I’ll explain everything in detail, step-by-step, so you can follow along even if…
Read More Run JUnit 5 Tests from Command Line without Maven or GradleThe @DisplayName annotation is used to provide a custom name for your JUnit 5 test method. Let’s have a look how it is used in Java code. Below, is a very simple code example of a JUnit 5 test method. Notice how the @DisplayName annotation is used to provide a custom name for the text…
Read More @DisplayName Annotation in JUnit 5In this tutorial, you will learn how to use the @Tag annotation in JUnit 5 for organizing and running your unit tests. By the end of this tutorial, you’ll have a solid understanding of the @Tag annotation, its benefits, and how to apply it effectively in your own test cases. Let’s dive in! What is…
Read More @Tag Annotation: Organizing and Running Tests in JUnit 5This tutorial will guide you on how to incorporate JUnit support into your Spring Boot application based on Maven. Introduction Brief Explanation of JUnit and Its Importance in Testing JUnit is a popular open-source testing framework for Java applications. It provides a set of tools and methods for writing and running automated tests, making it…
Read More JUnit Support in Spring BootA test suite is a collection of test cases that are run together as a single unit. It helps to organize and manage the execution of multiple test cases. Test suites can be used to group related tests or to test different aspects of a complex system. They can also be used to run tests…
Read More JUnit 5 Test Suite TutorialIn this tutorial, you will learn how to write a JUnit test that validates whether the method under test throws the correct exception. The tutorial includes examples for both JUnit 5 and JUnit 4. For video lessons, check out my video course: Testing Java with JUnit and Mockito. Let’s begin with JUnit 5 version first.…
Read More Test for Exception in JUnit 5 and JUnit 4JUnit is a popular unit testing framework for Java. In JUnit 5, assertions are used to check the expected outcome of a test case. Assertion messages are used to provide more information about the failed test and help in debugging. The Lazy Assertion Message feature in JUnit 5 allows you to specify the assertion message…
Read More JUnit 5 Lazy Assertion Message TutorialThis article will explore the JUnit 5 Assertions API, go in-depth with examples of building fundamental assertions, and look at customizing the error message that appears when an assertion fails. We’ll also discuss how to execute many assertions simultaneously as an assertion group in our last section. So, let’s begin! What are JUnit Assertions? As…
Read More An Overview of JUnit 5 Assertions with ExamplesIn this tutorial, I am going to share with you how to make your JUnit tests run in order. And if you are interested to learn more about testing your RESTful Web Services with JUnit and Rest Assured check this list of tutorials: Building and Testing RESTful Web Services. By default, test classes and methods will…
Read More How to Run JUnit Tests in OrderIn this lesson, you will learn about the @Disabled annotation that will help you to disable the test. Usually, it is not a good idea to disable a test. If the test is failing for some reason and you are not sure why it is failing, do not disable it. Try to figure out why…
Read More How to Disable JUnit Test Method with @Disabled AnnotationIn a real-world scenario, when testing a system, there are some instances in which a test should only be executed under a specific environment. Integration tests that rely on a third-party system such as Operating System are one example. If that system goes down, we’ll omit the tests that need it to avoid build failure.…
Read More A Guide to Conditional Tests Execution Using JUnit 5In this tutorial, you will learn about JUnit5 Lifecycle methods. A Lifecycle Method is any method that is directly annotated or meta-annotated with @BeforeAll, @AfterAll, @BeforeEach, or @AfterEach. Let’s have a look at these annotations one by one. @BeforeAll When a method is annotated with @BeforeAll it means that the method should be executed before…
Read More A Guide to JUnit5 Lifecycle MethodsIn this guide, you will learn to use @RepeatedTest and @ParametrizedTest annotations introduced in JUnit 5. We’ll look at the capability that lets us run a test a certain number of times. We’ll also look at interfaces that will allow us to retrieve information about the repeated tests. Moreover, we will also look at a…
Read More A Guide to @RepeatedTest and @ParametrizedTest in JUnit 5In this JUnit 5 and Rest Assured tutorial, I am going to share with you how to add JUnit 5 and Rest Assured support to your Spring Boot project. It will be more than that actually. This tutorial will cover: Add JUnit 5 and Rest Assured to Spring Boot Project, Create a new JUnit 5…
Read More Create a JUnit 5 Test Case with Rest Assured. Video Tutorial.