This article provides a comprehensive guide to Spring Boot testing, covering core utilities, essential annotations, dependency libraries, web environment configurations, and practical code examples for unit, slice, and integration tests across JUnit, MockMvc, TestRestTemplate, JPA, Redis, and REST client scenarios.
This article explains what unit testing is, why it is essential for software quality, outlines its benefits such as early bug detection and design improvement, and provides practical guidance on writing effective Java unit tests using JUnit5, Mockito, and JaCoCo, along with CI integration and best‑practice principles.
This article examines common unit‑testing problems in Java projects, analyzes their root causes such as development and maintenance costs, and presents practical solutions including choosing JUnit5, leveraging Mockito, using in‑memory databases, and employing a custom IntelliJ plugin to automatically generate test code and test data.
This article explains why developers should switch from JUnit4 to JUnit5, outlines the JUnit5 architecture, shows how to add the proper Maven dependency, and provides practical examples of common annotations, assertions, repeated, parameterized, and nested tests for Spring Boot projects.
This article explains the major changes in Spock 2.0 M1, how to integrate it with JUnit 5 via the JUnit Platform, provides step‑by‑step Gradle and Maven configurations, discusses compatibility issues with Groovy versions, and offers solutions for JUnit 4 Rule migration.
This tutorial explains how to use Selenium's built‑in PageFactory to implement the Page Object pattern, defines a TodoMVC API, provides JUnit 5 test examples, shows a concrete Page implementation with @FindBy annotations, discusses additional locator annotations, element lookup timing, and demonstrates running the tests from the command line.
