Java 测试服务Spring和mockito
我正在尝试学习如何测试服务,但我看不出问题出在哪里。 我的班级服务是:Java 测试服务Spring和mockito,java,spring-boot,testing,mockito,Java,Spring Boot,Testing,Mockito,我正在尝试学习如何测试服务,但我看不出问题出在哪里。 我的班级服务是: @Service @Transactional public class UserService implements IUserService { @Autowired IUserRepository userRepository; @Autowired IWalletService walletService; @Override public User create
@Service
@Transactional
public class UserService implements IUserService {
@Autowired
IUserRepository userRepository;
@Autowired
IWalletService walletService;
@Override
public User createUserAndWallet(NewUserDTO newUser) {
User user = new User();
user.setName(newUser.getName());
user.setSurname(newUser.getSurname());
user.setBirthdate(newUser.getBirthdate());
User userCreated = userRepository.save(user);
walletService.create(userCreated.getId());
return userCreated;
}
}
我的用户类:
@Entity
@Data
@Table
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;
@Column
private String name;
@Column
private String surname;
@Column
private Date birthdate;
}
我的测试:
@ExtendWith(MockitoExtension.class)
@ExtendWith(SpringExtension.class)
public class UserServiceTest {
@MockBean
private WalletService walletService;
@MockBean
private IUserRepository userRepository;
@InjectMocks
private UserService userService;
@Test
public void test_Create_User() {
NewUserDTO newUserDTO = new NewUserDTO();
newUserDTO.setName("Test");
newUserDTO.setSurname("ApellidoTest");
newUserDTO.setBirthdate(new Date());
User user = new User();
user.setName("Test");
user.setSurname("ApellidoTest");
user.setBirthdate(new Date());
User userCreated = new User();
user.setId(1);
user.setName("Test");
user.setSurname("ApellidoTest");
user.setBirthdate(new Date());
Mockito.when(userRepository.save(user)).thenReturn(userCreated);
User result = userService.createUserAndWallet(newUserDTO);
assertThat(user, is(result));
}
}
我们一直都有这个错误:
java.lang.NullPointerException: Cannot invoke "com.prueba.tests.wallet.model.User.getId()" because "userCreated" is null
at com.prueba.tests.wallet.service.impl.UserService.createUserAndWallet(UserService.java:31)
at com.prueba.tests.wallet.service.impl.UserServiceTest.test_Create_User(UserServiceTest.java:55)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:686)
at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)
at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)
at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:212)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:208)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:137)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:71)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:135)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:248)
at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$5(DefaultLauncher.java:211)
at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:226)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:199)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:132)
at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:71)
at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:220)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:53)
我试图使用不同的解决方案张贴在互联网上,但总是有错误
你能帮我解决这个错误并学会使用测试吗
谢谢 您对存储库的模拟不起作用。您应该为您的测试使用一个运行程序来使用
@InjectMocks
注释,因此使用@RunWith(SpringRunner.class)
注释您的测试存储库的模拟不起作用。您应该为您的测试使用一个运行程序来使用@InjectMocks
注释,因此请使用@RunWith(SpringRunner.class)
对您的测试进行注释,尝试如下所示重写您的测试:
Date birthDate = new Date();
...
newUserDTO.setBirthdate(birthDate);
...
user.setBirthdate(birthDate);
User userCreated = new User();
userCreated.setId(1);
userCreated.setName("Test");
userCreated.setSurname("ApellidoTest");
userCreated.setBirthdate(birthDate);
Mockito.when(userRepository.save(user)).thenReturn(userCreated);
User result = userService.createUserAndWallet(newUserDTO);
assertThat(user, is(result));
您有三个不同的出生日期,因此方法
createUserAndWallet
中的映射用户不等于测试代码中的user
,假设您的user.equals
方法取决于birthDate
字段。请尝试像这样重写测试:
Date birthDate = new Date();
...
newUserDTO.setBirthdate(birthDate);
...
user.setBirthdate(birthDate);
User userCreated = new User();
userCreated.setId(1);
userCreated.setName("Test");
userCreated.setSurname("ApellidoTest");
userCreated.setBirthdate(birthDate);
Mockito.when(userRepository.save(user)).thenReturn(userCreated);
User result = userService.createUserAndWallet(newUserDTO);
assertThat(user, is(result));
您有三个不同的出生日期,因此方法
createUserAndWallet
中的映射用户不等于测试代码中的user
,假设您是用户。equals
方法取决于birthDate
字段。请发布您的user
类,尤其是equals()方法发布@NKRIVENKO使用调试器并检查两个User
对象不相等的原因。可能是newdate()
。请发布您的User
类,尤其是equals()方法发布@NKRIVENKO使用调试器并检查两个User
对象不相等的原因。可能是new Date()
。这并不能解决createUserAndWallet()
中的空指针问题。为什么不呢?现在userRepository.save(用户)返回null
,因为它是用不同的对象“%User userCreated=new User()模拟的;user.setId(1);user.setName(“测试”);user.setSurname(“ApellidoTest”);user.setBirthdate(new Date());`创建userCreated
对象,但更改user
对象的字段值。这是故意的吗?如果这不是故意的,那么您的用户
对象与您服务中的对象不相等,因为它具有ID,因此mock将返回null
。是。。。这就是问题所在。。。老兄,问题是复制粘贴!泰!这并不能解决createUserAndWallet()
中的空指针问题。为什么不呢?现在userRepository.save(用户)返回null
,因为它是用不同的对象“%User userCreated=new User()模拟的;user.setId(1);user.setName(“测试”);user.setSurname(“ApellidoTest”);user.setBirthdate(new Date());`创建userCreated
对象,但更改user
对象的字段值。这是故意的吗?如果这不是故意的,那么您的用户
对象与您服务中的对象不相等,因为它具有ID,因此mock将返回null
。是。。。这就是问题所在。。。老兄,问题是复制粘贴!泰!