I can't use mockito to replace the method call in SpringBatch - mockito

Question

I'm trying to use mockito to replace the method call in SpringBatch. The code is greatly simplified and removed unnecessary to reduce it, if something is missing, write, I will add.
Spring Batch Settings File
#Configuration
#EnableBatchProcessing
public class ListBatchConfig {
#Bean
public Job jobListBath(JobBuilderFactory jobBuilderFactory,
StepBuilderFactory stepBuilderFactory,
ItemReader<Student> itemReaderListBath,
ItemProcessor<Student, Marksheet> processorListBath,
ItemWriter<Marksheet> itemWriterListBath
) {
Step step = stepBuilderFactory.get("List-load")
.<Student, Marksheet>chunk(3)
.reader(itemReaderListBath)
.processor(processorListBath)
.writer(itemWriterListBath)
.build();
return jobBuilderFactory.get("L-Load")
.incrementer(new RunIdIncrementer())
.start(step)
.build();
}
#Bean
public ItemReader<Emaill> itemReaderListBath() {
return new ListItemReader();
}
...
The ItemReader is described in a separate class List Item Reader
#Component
#Slf4j
public class ListItemReader implements ItemReader<Student> {
#Autowired
private CalService calService ;
DataAtributes dataAtributes;
...
#Override
public Student read() {
//Тут вызывается метод сервиса, который необходимо подменить
dataAtributes = new DataAtributes(1,"test");
Integer val = calService.addAttr(dataAtributes);
...
}
Here is the service itself
#Service
public class CalService {
public int addI(int input1) {
return 0;
}
public Integer addAttr(DataAtributes attr) {
return 0;
}
}
in this service, the Job starts
#Service
public class StartJob {
#Autowired
JobLauncher jobLauncher;
#Autowired
Job jobDeveloper;
public void launchJob() throws Exception {
...
JobExecution jobExecution = jobLauncher.run(jobDeveloper, params);
and the testing class itself
#SpringBootTest
public class CaclServisTest {
#Mock
CalService calcService;
#InjectMocks
StartJob
#Autowired
StartJob startJob;
#Test
void add() {
DataAtributes dataAtributes = new DataAtributes(1,"test");
when(calcService.addAttr(dataAtributes)).thenReturn(57);
startJob.launchJob();
}
}
As a result, the native method is called, not the substituted one.
I do not understand what service should be installed #InjectMocks

Answer 1

Your #Mock field is not available for in Spring context.
In particular: #Autowire StartJob startJob uses CalService from Spring context, not your mock.
To replace a bean in Spring context, use #MockBean instead:
#SpringBootTest
public class CaclServisTest {
#MockBean
CalService calcService;
#Autowired
StartJob startJob;
#Test
void add() {
DataAtributes dataAtributes = new DataAtributes(1,"test");
when(calcService.addAttr(dataAtributes)).thenReturn(57);
startJob.launchJob();
}
}