Unit Testing with Spring-MVC-Test - @Autowire attributes are null

Hi guys,

Im confused when trying to write a unit test for my rest controller as I cannot seem to mock my @Autowire properties in the controller.

Here is my Test

Code:

---

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration()
public class RegistrationControllerTesting {
       
        private MockMvc mockMvc;
        private LicenseSecurityContextHelper licenseSecurityContextHelper;
               
        private ILicenseAuthentication licenseAuthentication;
       
        @Before
        public void setup() {               
                licenseAuthentication = mock(LicenseAuthentication.class);
                mockMvc = MockMvcBuilders.standaloneSetup(new RegistrationController()).build();
                licenseSecurityContextHelper = mock(LicenseSecurityContextHelper.class);
                when(licenseSecurityContextHelper.getLicenseAuthentication()).thenReturn(licenseAuthentication);
        }
       
        @Test
        public void test() throws Exception {               
                DefaultRequestBuilder requestBuilder = MockMvcRequestBuilders.post("/rest/auth/register")
                        .contentType(MediaType.APPLICATION_JSON)
                        .body(JsonHelperProvider.registrationJson.getBytes());
                mockMvc.perform(requestBuilder);

        }

---

My config in RegistrationControllerTesting-context.xml

Code:

---

<bean id="licenseSecurityContextHelper" class="org.mockito.Mockito" factory-method="mock">
                <constructor-arg value="uk.co.company.common.license.spring.LicenseSecurityContextHelper" />
        </bean>
               
        <bean id="rollupScheduleService" class="org.mockito.Mockito" factory-method="mock">
                <constructor-arg value="uk.co.company.product.service.IRollupScheduleService" />
        </bean>
       
        <bean id="productApplicationContextService" class="org.mockito.Mockito" factory-method="mock">
                <constructor-arg value="uk.co.company.product.service.IproductApplicationContextService" />
        </bean>

---

My controller has autowire fields

Code:

---

@Autowired
private IproductApplicationContextService productApplicationContextService;
       
@Autowired
private IRollupScheduleService rollupScheduleService;
       
@Autowired
private LicenseSecurityContextHelper licenseSecurityContextHelper;

---

However in my controller the object licenseSecurityContextHelper is null i.e

Code:

---

ILicenseAuthentication licenseAuthentication = licenseSecurityContextHelper.getLicenseAuthentication();

---

Im confused because the beans seem to be autowired in the log file. I proved this by removing the mocked bean definitions from my xml config and this produces the error

Code:

---

"Could not autowire field: private uk.co.company.product.service.IproductApplicationContextService"

---

Can someone please tell me what ive done wrong?

Hi everyone,

I resolved the problem and posting the solution here to help others .

First off my problem was that I was using the standaloneSetup method from the MockMVCBuilders class. This does not use the configuration that I loaded from the @ContextConfiguation annotation (i.e RegistrationControllerTesting-context.xml)

So it was simply a case of using the MockMVCBuilders.xmlConfigSetup to load in my servlet context and mock objects and remove the @ContextConfiguration.

So the code:

This example uses spring-test-mvc and loads in the servlet context from an xml file and injects mocked objects into the controllers @Autowired attributes. It calls a rest service passing in some Json.

RegistrationControllerTesting-context.xml

Code:

---


<bean id="licenseSecurityContextHelper" class="org.mockito.Mockito" factory-method="mock">
                <constructor-arg value="uk.co.company.common.license.spring.LicenseSecurityContextHelper" />
        </bean>
               
        <bean id="rollupScheduleService" class="org.mockito.Mockito" factory-method="mock">
                <constructor-arg value="uk.co.company.product.service.RollupScheduleService" />
        </bean>
       
        <bean id="productApplicationContextService" class="org.mockito.Mockito" factory-method="mock">
                <constructor-arg value="uk.co.company.product.service.ProductApplicationContextService" />
        </bean>
       
        <mvc:annotation-driven />

        <context:component-scan base-package="uk.co.company.product.mvc" />

        <mvc:resources mapping="/resources/**" location="/resources/" />

        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
                <property name="prefix" value="/WEB-INF/views/" />
                <property name="suffix" value=".jsp" />
        </bean>

---

Unit Test Case

Code:

---


public class RegistrationControllerTesting {
       
        private MockMvc mockMvc;
        private LicenseSecurityContextHelper licenseSecurityContextHelper;
               
        private ILicenseAuthentication licenseAuthentication;
       
       
        @Before
        public void setup() {
               
                licenseAuthentication = mock(LicenseAuthentication.class);
                licenseSecurityContextHelper = mock(LicenseSecurityContextHelper.class);
                mockMvc = MockMvcBuilders.xmlConfigSetup("classpath:uk/co/company/product/mvc/rest/RegistrationControllerTesting-context.xml").build();
                when(licenseSecurityContextHelper.getLicenseAuthentication()).thenReturn(licenseAuthentication);
               
        }
       
        @Test
        public void test() throws Exception {               
                DefaultRequestBuilder requestBuilder = MockMvcRequestBuilders.post("/rest/auth/register")
                        .contentType(MediaType.APPLICATION_JSON)
                        .body(JsonHelperProvider.registrationJson.getBytes());
                mockMvc.perform(requestBuilder);

        }

---

Controller

Code:

---


public final class RegistrationController {
       
        private static final Logger logger = Logger.getLogger(RegistrationController.class);
       
        @Autowired
        private IProductApplicationContextService productApplicationContextService;
       
        @Autowired
        private IRollupScheduleService rollupScheduleService;
       
        @Autowired
        private LicenseSecurityContextHelper licenseSecurityContextHelper;

       
        public RegistrationController() {
                logger.info(RegistrationController.class);
        }
       
        @RequestMapping(value = "/register", method=RequestMethod.POST, headers="Content-Type=application/json")
        @ResponseBody
        public ProductApplicationContext registerApplication(@RequestBody ApplicationDetails incomingContext) {
               
                ILicenseAuthentication licenseAuthentication = licenseSecurityContextHelper.getLicenseAuthentication();

…..

}

---

Hope it helps others.