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The Spring TestExecutionListener 1. Overview Typically, we use the JUnit annotations like @BeforeEach, @AfterEach, @BeforeAll, and @AfterAll, to orchestrate tests’ lifecycle, but sometimes that’s not enough — especially when we’re working with the Spring framework. This is where Spring TestExecutionListener comes in handy. In this tutorial, we’ll see what the… Continue Reading spring-testexecutionlistener
Mocking a WebClient in Spring 1. Overview These days, we expect to call REST APIs in most of our services. Spring provides a few options for building a REST client, and WebClient is recommended. In this quick tutorial, we will look at how to unit test services that use WebClient… Continue Reading spring-mocking-webclient
A Quick Guide to @DirtiesContext 1. Overview In this quick tutorial, we’ll learn about the @DirtiesContext annotation. We’ll also show a standard way to use the annotation for testing. 2. @DirtiesContext @DirtiesContext is a Spring testing annotation. It indicates the associated test or class modifies the ApplicationContext. It tells the testing… Continue Reading spring-dirtiescontext
Unable to Find @SpringBootConfiguration with @DataJpaTest 1. Introduction In our tutorial on testing in Spring Boot, we saw how we can use the @DataJpaTest annotation. In this next tutorial, we’ll see how to resolve the error “Unable to find a @SpringBootConfiguration“. 2. Causes The @DataJpaTest annotation helps us to set up… Continue Reading spring-boot-unable-to-find-springbootconfiguration-with-datajpatest
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Introduction to Cobertura 1. Overview In this article, we will demonstrate several aspects of generating code coverage reports using Cobertura. Simply put, Cobertura is a reporting tool that calculates test coverage for a codebase – the percentage of branches/lines accessed by unit tests in a Java project. 2. Maven Plugin… Continue Reading cobertura
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Serenity BDD with Spring and JBehave 1. Introduction Previously, we have introduced the Serenity BDD framework. In this article, we’ll introduce how to integrate Serenity BDD with Spring. 2. Maven Dependency To enable Serenity in our Spring project, we need to add serenity-core and serenity-spring to the pom.xml: <dependency> <groupId>net.serenity-bdd</groupId>… Continue Reading serenity-spring-jbehave
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How to TDD a List Implementation in Java 1. Overview In this tutorial, we’ll walk through a custom List implementation using the Test-Driven Development (TDD) process. This is not an intro to TDD, so we’re assuming you already have some basic idea of what it means and the sustained… Continue Reading java-test-driven-list
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Introduction to Testing with Arquillian 1. Overview Arquillian is a container-agnostic integration testing framework for Java EE. Using Arquillian minimizes the burden of managing containers, deployments, framework initializations, and so on. We can focus on writing actual tests and not on bootstrapping the test environment. 2. Core Concepts ==== 2.1.… Continue Reading arquillian
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Hamcrest Bean Matchers Testing Hamcrest 1. Overview Hamcrest is a library that provides methods, called matchers, to help developers write simpler unit tests. There are plenty of matchers, you can get started by reading about some of them here. In this article, we’ll explore beans matchers. 2. Setup To get… Continue Reading hamcrest-bean-matchers
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Configure Jenkins to Run and Show JMeter Tests 1. Overview In this article, we’re going to configure a continuous delivery pipeline using Jenkins and Apache JMeter. We’ll rely on the JMeter article as a great starting-point to first understand the basics of JMeter, as it already has some configured performance… Continue Reading jenkins-and-jmeter
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