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 5This tutorial will guide you through the process of running Unit Tests and Integration Tests separately in a Maven-based Spring Boot application. We will use the JUnit Tag feature to group our test cases and separate Unit Tests from Integration Tests. To learn more, check out the Test Java code tutorials page. Create your tests…
Read More Running Unit Tests and Integration Tests Separately in Spring BootIn 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 5Welcome, and thank you for choosing this tutorial! If you’re an absolute beginner looking to learn about integration testing for Spring Boot applications with a MySQL database server, then you’re in the right place. As you proceed through this tutorial, remember that everyone was once a beginner, and the only silly question is the one…
Read More Integration Testing with Spring Boot, MySQL and TestcontainersThis 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 BootJUnit 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 TutorialIn 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.