java - JSF 支持 Bean 单元测试

Question

我有一个名为 e.g. 的支持 bean PeopleListBean。目的很简单:从存储库返回人员列表。

public class PeopleListBean {

    @Autowired
    private PersonRepository personRepository;

    private List<Person> people;

    @PostConstruct
    private void initializeBean() {     
        this.people = loadPeople();
    }

    public List<User> getPeople() {
        return this.people;
    }

    private List<Person> loadPeople() {
        return personRepository.getPeople();
    }

}

我想使用 Junit 和 Mockito 为这个 bean 创建一个单元测试。
下面的示例测试类:

import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.reset;
import static org.mockito.Mockito.when;

import java.util.ArrayList;
import java.util.List;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.example.PersonRepository;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:/test-application-context.xml" })
public class PeopleListBeanTest {

    @Autowired
    private PeopleListBean peopleListBean;
    @Autowired
    private PersonRepository mockPersonRepository;

    @Before
    public void init() {
        reset(mockPersonRepository);
    }

    @Test
    public void canListPeople() {
        List<Person> people = getDummyList();

        when(mockPersonRepository.getPeople().thenReturn(people);

        assertTrue(peopleListBean.getPeople().size() == people.size());
    }
}

我的问题是，何时/如何模拟存储库，因为加载发生在 initializeBean 方法 (@PostConstruct) 中。因此，在构造类之后，在我可以实际模拟导致断言不匹配的方法之前调用“getPeople”方法。

我非常感谢一些帮助/指导!

Answer 1

使用 JUnit 的 @BeforeClass注释

因此您的代码将如下所示:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:/test-application-context.xml" })
public class PeopleListBeanTest {

    @Autowired
    private PeopleListBean peopleListBean;
    @Autowired
    private PersonRepository mockPersonRepository;

    @BeforeClass
    public static void initialise() {

    }

    // .
    // .
    // .
}