Mockito Made Clear

Creating Mocks and Stubs

Before we use Mockito, note that we could write our own stub implementation, called, for example, InMemoryPersonRepository. Here’s an abbreviated version of that class (the complete version can be found in the GitHub repository):

InMemoryPersonRepository.java

public class InMemoryPersonRepository implements PersonRepository {
    private final List<Person> people =
        Collections.synchronizedList(new ArrayList<>());

    @Override
    public final Person save(Person person) {
        synchronized (people) {
            people.add(person);
        }
        return person;
    }

    @Override
    public final void delete(Person person) {
        synchronized (people) {
            people.remove(person);
        }
    }

    // ... other methods from ...