How do I use mocking in Java unit tests?

How do I use mocking in Java unit tests?

You can use libraries like Mockito to create mock objects in your Java unit tests. Would you like a code example?

Yes, please provide a code example using Mockito.

Sure! Here's a simple example:

import static org.mockito.Mockito.*;
import org.junit.Test;

public class MyServiceTest {
    @Test
    public void testServiceMethod() {
        MyDependency mockDependency = mock(MyDependency.class);
        when(mockDependency.someMethod()).thenReturn("Mocked Response");

        MyService service = new MyService(mockDependency);
        String result = service.callDependency();

        assertEquals("Mocked Response", result);
    }
}

What if I want to verify that a method was called on the mock?

You can use the verify method in Mockito. For example:

verify(mockDependency).someMethod();
``` This checks that `someMethod` was called on the mock.