[英]Spring test service class mocking utility class- Junit and Mockito
I want to write test cases for service layer of spring framework using Junit + Mockito.
我想使用Junit + Mockito.
为spring框架的服务层编写测试用例Junit + Mockito.
How to call the actual service layer method using my ServiceTest
class, If i mock the ServiceTest
class then it's object wont execute the actual service method code because it wont get the object to call it's methods and if I try with the Spy still it was not working, I tried this example still I not able to execute the test cases. 如何使用我的ServiceTest
类调用实际的服务层方法,如果我模拟ServiceTest
类,则它的对象将不会执行实际的服务方法代码,因为它不会使该对象调用其方法,并且如果我尝试使用Spy仍然不会工作, 我尝试了此示例,但仍然无法执行测试用例。
MyService.java MyService.java
@Service
public class MyService{
@Autowired
Utility utility;
public String showResult(){
String result = utility.getName();
return result;
}
}
MyServiceTest.java MyServiceTest.java
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(loader=AnnotationConfigWebContextLoader.class)
@WebAppConfiguration
public class MyServiceTest {
@Autowired
MyService myService;
@Autowired
Utility utility;
@Test
public void testShowResult() throws Exception {
assertEquals("Test",myService.showResult());
}
@Configuration
static class MykServiceTestContextConfiguration {
@Bean
public MyService myService() {
return new MyService();
}
@Bean
public Utility utility() {
return Mockito.mock(Utility.class);
}
}
}
You have to first mock the Utility
class and then have to invoke it before calling your @Test
using MockitoAnnotations.initMocks(this)
as follows: 您必须首先模拟Utility
类,然后在使用MockitoAnnotations.initMocks(this)
调用@Test
之前先调用它,如下所示:
MyServiceTest.java MyServiceTest.java
import static org.mockito.Mockito.when;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.AnnotationConfigWebContextLoader;
import org.springframework.test.context.web.WebAppConfiguration;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(loader = AnnotationConfigWebContextLoader.class)
@WebAppConfiguration
public class MyServiceTest {
@InjectMocks
private MyService myService;
@Mock
private Utility utility;
@Before
public void setupMock() {
MockitoAnnotations.initMocks(this);
}
@Test
public void testShowResult() throws Exception {
when(utility.getName()).thenReturn("Test");
Assert.assertEquals("Test", myService.showResult());
}
@Configuration
static class MykServiceTestContextConfiguration {
@Bean
public MyService myService() {
return new MyService();
}
@Bean
public Utility utility() {
return new Utility();
}
}
}
MyService.java MyService.java
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class MyService {
@Autowired
private Utility utility;
public String showResult() {
String result = utility.getName();
return result;
}
}
Utility.java Utility.java
import org.springframework.stereotype.Component;
@Component
public class Utility {
public String getName() {
return "hello";
}
}
How about using @MockBean
? 使用@MockBean
怎么@MockBean
? It suits Spring + JUnit and, probably you need to implement mock behavior. 它适合Spring + JUnit,并且可能需要实现模拟行为。
I guess that Utility.getName()
return "Test" in the test case. 我猜在测试用例中Utility.getName()
返回“ Test”。
The following is the test code I tried. 以下是我尝试过的测试代码。
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(loader = AnnotationConfigWebContextLoader.class)
@WebAppConfiguration
public class MyServiceTest {
@Autowired
MyService myService;
@MockBean
Utility utility;
@Test
public void testShowResult() throws Exception {
Mockito.when(utility.getName()).thenReturn("Test");
assertEquals("Test", myService.showResult());
}
@Configuration
static class MykServiceTestContextConfiguration {
@Bean
public MyService myService() {
return new MyService();
}
}
}
Make use of @Spy 利用@Spy
When spy is called, then actual method of real object is called. 调用spy时,将调用实际对象的实际方法。
https://www.tutorialspoint.com/mockito/mockito_spying.htm https://www.tutorialspoint.com/mockito/mockito_spying.htm
please go through the tutorial 请仔细阅读本教程
This worked for me 这对我有用
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration
@WebAppConfiguration
public class MyServiceTest {
@Spy
MyService myService;
@Test
public void testShowResult() throws Exception {
assertEquals("Test",myService.showResult());
}
@Service
public class MyService{
public String showResult(){
return "Test";
}
}
}
still having issues share the spring version you are using 仍然有问题共享您正在使用的春季版本
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