How to use Spies in Mockito

Date: 2022-05-12

This tutorial demonstrates the use of @Spy in Mockito for unit testing in Java. It explains how to avoid NotAMockException by correctly spying on objects before mocking their methods. The tutorial provides a practical example with a User model and UserSrv service class, showing how to create and test a UserSrv instance using a @Spy annotation. The example includes project setup, dependencies (in pom.xml), and a JUnit test class (UserSrvTest.java). The guide assumes familiarity with Java and a chosen IDE.

Read more: https://examples.javacodegeeks.com/how-to-use-spies-in-mockito/