Integrate Hamcrest and Mockito with JUnit 5 for more sophisticated unit testing with assertions, simulations, and behavior verification using Mockito spies.

WireMock, a flexible tool for building API mocks, and the new WireMock Spring Boot simplify the WireMock configuration for JUnit-based integration tests in Spring Boot applications.

Get the code Download the source code for all examples in this article. Unit testing with JUnit 5 Let’s start with an example of how to configure a project to use JUnit 5 for a unit test.