Spring Download Unit Test

Question

I am new to spring boot. Need help. Here is my unit test class.

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = DemoApplication.class)
public class EmployeeRepositoryTest {

@Autowired
protected EmployeeRepository employeeRepository;


@Test
public void insertEmploee(){

    Employee employee = new Employee();

    employee.setEmpName("Azad");
    employee.setEmpDesignation("Engg");
    employee.setEmpSalary(12.5f);

    employeeRepository.save(employee);

}

}

When I run it, I get an exception like

java.lang.NoSuchMethodError: org.springframework.core.annotation.AnnotatedElementUtils.findMergedAnnotationAttributes(Ljava/lang/reflect/AnnotatedElement;Ljava/lang/String;ZZ)Lorg/springframework/core/annotation/AnnotationAttributes;

at org.springframework.test.util.MetaAnnotationUtils$AnnotationDescriptor.<init>(MetaAnnotationUtils.java:290)
at org.springframework.test.util.MetaAnnotationUtils$UntypedAnnotationDescriptor.<init>(MetaAnnotationUtils.java:365)
at org.springframework.test.util.MetaAnnotationUtils$UntypedAnnotationDescriptor.<init>(MetaAnnotationUtils.java:360)
at org.springframework.test.util.MetaAnnotationUtils.findAnnotationDescriptorForTypes(MetaAnnotationUtils.java:191)
at org.springframework.test.util.MetaAnnotationUtils.findAnnotationDescriptorForTypes(MetaAnnotationUtils.java:198)
at 

Process terminated with exit code -1

Answer 1

Your problem seems to be resolved (mixing Spring dependency versions), but let me just expand on @ g00glen00b's comment on how to write unit tests.

Make sure the following dependency is in yours pom.xml:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
</dependency>

As stated in the comment, it @RunWith(SpringJUnit4ClassRunner.class)forces the unit test to run the entire application and is used rather for integration testing.

, Spring -boot Mockito, .

unit test :

public class EmployeeRepositoryTest {

@InjectMocks
private EmployeeRepository employeeRepository;

@Mock
private Something something; // some class that is used inside EmployRepository (if any) and needs to be injected

@Before
public void setUp() {
    MockitoAnnotations.initMocks(this);
}

@Test
public void insertEmploee(){

    Employee employee = new Employee();

    employee.setEmpName("Azad");
    employee.setEmpDesignation("Engg");
    employee.setEmpSalary(12.5f);

    employeeRepository.save(employee);

    Mockito.verify(...); // verify what needs to be verified
    }
}

Mockito , , .