JUnit 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 Tutorial
This 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 Examples
In 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 Order
In this tutorial, you will learn how to write a JUnit Test that validates if the method under the test throws the correct exception. This tutorial will have examples for JUnit 5 and JUnit 4 as well. Let’s begin with JUnit 5 version first. JUnit 5. “assertThrows()” Assertion To test for exceptions in JUnit 5…Read More Test for Exception in JUnit 5 and JUnit 4
This tutorial will teach you how to add JUnit support to your maven-based Spring Boot application. Spring Boot Starter Test Dependency To add JUnit and Mockito support to your maven-based Spring Boot application, add the following dependency to pom.xml file. <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> The above dependency will add to your project many useful…Read More Adding JUnit Support to Spring Boot Application
In this lesson, you will learn about 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 it is…Read More How to Disable JUnit Test Method
In 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 JUnit5
The @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 5
In 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 Methods
In 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 5
In 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.
Earlier I’ve published a blog post on now to create a RESTful Web Service(JAX-RS) to accept JSON payload with user profile details and how to save user profile details into a MySQL database using Java Hibernate framework. In this blog post I am going to share with you how to test(using JUnit and Mockito) it’s Service…Read More Test RESTful Web Service with JUnit and Mockito
Spring Boot offers various methods and techniques for setting up your database. It can automatically create and initialize the database using the information in the data source. Spring Boot looks for SQL files in specific locations in your project’s classpath, such as “schema.sql” and “data.sql”. In this tutorial, you will learn how to configure your…Read More Database Initialization with Spring Boot
In this tutorial, we will discuss how to Mock Objects and Stub Methods with Mockito, and we will see various ways to stubbing with common scenarios and examples. Mocking and stubbing are the basis of writing clean and simple unit tests. So, let’s begin! Visit our Mockito introductory level tutorial if you are a beginner…Read More How to Mock Objects and Stub Methods with Mockito?
In this tutorial, we’ll implement a RestTemplate Error Handling Example. But before moving ahead, let’s see why is there a need to do this? The answer is: It becomes very tedious to handle exceptions through try/catch blocks as applications scale. An Efficient way to avoid this hassle is to implement a reusable error handler that…Read More RestTemplate Error Handling Example