Java 用Mockito对spring引导控制器进行单元测试
我有以下控制器:Java 用Mockito对spring引导控制器进行单元测试,java,testing,junit,mocking,mockito,Java,Testing,Junit,Mocking,Mockito,我有以下控制器: @RestController @RequestMapping("cats") public class CatController { private IDatabaseCatDao databaseCatService; private DataValidator catDataValidator; public CatController(IDatabaseCatDao databaseCatService, DataValidator catD
@RestController
@RequestMapping("cats")
public class CatController {
private IDatabaseCatDao databaseCatService;
private DataValidator catDataValidator;
public CatController(IDatabaseCatDao databaseCatService, DataValidator catDataValidator) {
this.databaseCatService = databaseCatService;
this.catDataValidator = catDataValidator;
}
@PostMapping
public ResponseEntity addCat(@RequestBody Cat cat) {
catDataValidator.validateCatAdding(cat, cats);
databaseCatService.addCat(cat);
URI location = ServletUriComponentsBuilder.fromCurrentRequest().buildAndExpand(cat.getName()).toUri();
return ResponseEntity.created(location).build();
}
}
catDataValidator-检查数据是否正确databaseCatService-插入数据库+本地缓存 我需要使用jUnit和Mockito测试它 我的测试课程如下:
@RunWith(SpringRunner.class)
@WebMvcTest(value = CatController.class, secure = false)
public class CatControllerTest {
@Autowired
private MockMvc mockMvc;
@MockBean
private IDatabaseCatDao databaseCatService;
private String catExampleJson = "..some json file..";
public void addCat() throws Exception {
Mockito.doNothing().when(databaseCatService).addCat(Mockito.any(Cat.class));
RequestBuilder requestBuilder = MockMvcRequestBuilders
.post("/cats")
.accept(MediaType.APPLICATION_JSON).content(catExampleJson)
.contentType(MediaType.APPLICATION_JSON);
MvcResult result = mockMvc.perform(requestBuilder).andReturn();
MockHttpServletResponse response = result.getResponse();
assertEquals(HttpStatus.CREATED.value(), response.getStatus());
}
}
Mockito.doNothing(),因为服务addCat()是void方法。验证我最好单独测试
猫地图我在这里不用 java.lang.Exception:没有可运行的方法
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.<init>(SpringJUnit4ClassRunner.java:137)
at org.springframework.test.context.junit4.SpringRunner.<init>(SpringRunner.java:49)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:104)
at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:86)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)
at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:36)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:49)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
位于org.springframework.test.context.junit4.SpringJUnit4ClassRunner.(SpringJUnit4ClassRunner.java:137)
位于org.springframework.test.context.junit4.SpringRunner.(SpringRunner.java:49)
位于sun.reflect.NativeConstructorAccessorImpl.newInstance0(本机方法)
位于sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
在sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
位于java.lang.reflect.Constructor.newInstance(Constructor.java:423)
位于org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:104)
位于org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:86)
位于org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
位于org.junit.internal.builders.AllDefaultPossibilityBuilder.runnerForClass(AllDefaultPossibilityBuilder.java:26)
位于org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
位于org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)
位于org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:36)
位于com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:49)
位于com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
位于com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
位于com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
我对测试有以下依赖关系:
spring boot starter test您需要用
@test
注释您的测试方法,SpringRunner才能找到它。i、 e:
@Test
public void addCat() throws Exception {
哦,我的天,这是不可能的,t你能告诉我关于Mockito.doNothing()的事吗?当我试图调用void method()时,当我在这个方法中遇到一些异常时,它就不起作用了,对吧?
Mockito.doNothing()在你使用间谍而不是Mock
时最有用,因为您可以防止在真实对象上执行不需要的方法。您可以,但不能使用Mock
。你必须使用间谍
。这有一个@SpyBean
注释。但除非你别无选择,否则使用间谍是非常不鼓励的。更好的方法是创建一个新的测试类,专门测试您感兴趣的任何类。