使用Mockito @Spy注释时未调用@PostConstruct

Question

I am using Spring, TestNG and Mockito frameworks. I am writing a unit test for a class A that has a dependency on class B . Class B has a method annotated with @PostConstruct .

While writing Unit test case using TestNG for class A , I am annotating an instance of class B with Mockito @Spy in the test class. I can see the instance of B being created properly by Mockito. But why @PostConstruct code is not called when Mockito is processing @Spy annotation?

So, what I have done is I moved the code inside @PostConstruct to the constructor .

Is there any way to make Mockito execute any 'Post-processing' method while processing @Spy annotation?

Appreciate any help on this.

Answer 1

No, there isn't. PostConstruct is a Spring concept. But nothing forbids you to call it in your setup method:

@Before
public void prepare() {
    MockitoAnnotations.initMocks(this);
    this.b.postConstruct();
}

Answer 2

I solved this problem by replacing the method labeled with @PostConstruct by the constructor of the class labeled @Inject. Both solutions do the same and are supported by Mockito. It is necessary to put dependence:

    <dependency>
        <groupId>javax.inject</groupId>
        <artifactId>javax.inject</artifactId>
        <version>1</version>
    </dependency>

Before:

@Service
    public class AddressMapper extends CommonMapper {   
        @PostConstruct
        private void init() {
            ....

After:

@Service
    public class AddressMapper extends CommonMapper {
        @Inject
        public AddressMapper() {
            ...