JUnit 5

JUnit is the programmer-friendly testing framework for Java and the JVM. JUnit 5 is the current major version, composed of the JUnit Platform, JUnit Jupiter, and JUnit Vintage.

When to Use

• Java & JVM Ecosystem Testing: The gold standard testing framework (JUnit 5 / Jupiter) for Java, Kotlin, and Spring Boot applications.
• Parameterized & Dynamic Testing: Executing tests across CSV sources, method sources, and enum arguments.
• Lifecycle Extensions: Customizing test execution with JUnit 5 Extension model (@ExtendWith).
• Spring Boot Integration Testing: Pairing with @SpringBootTest and MockMvc to test enterprise web applications.

Quick Start

import static org.junit.jupiter.api.Assertions.assertEquals;
import org.junit.jupiter.api.Test;

class CalculatorTest {