无法使用Kotlin和@AutoConfigureMockMvc检测测试类的默认配置类

我正在给Kotlin一个漩涡，并将下面的测试转换成Java运行良好的Kotlin。 使用IntelliJ转换工具转换测试后，我试图运行它，但我得到这个错误：

22:32:19.476 [main] DEBUG org.springframework.test.context.junit4.SpringJUnit4ClassRunner - SpringJUnit4ClassRunner constructor called with [class com.test.app.web.DeveloperControllerTest] 22:32:19.486 [main] DEBUG org.springframework.test.context.BootstrapUtils - Instantiating CacheAwareContextLoaderDelegate from class [org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate] 22:32:19.494 [main] DEBUG org.springframework.test.context.BootstrapUtils - Instantiating BootstrapContext using constructor [public org.springframework.test.context.support.DefaultBootstrapContext(java.lang.Class,org.springframework.test.context.CacheAwareContextLoaderDelegate)] 22:32:19.517 [main] DEBUG org.springframework.test.context.BootstrapUtils - Instantiating TestContextBootstrapper for test class [com.test.app.web.DeveloperControllerTest] from class [org.springframework.boot.test.context.SpringBootTestContextBootstrapper] 22:32:19.539 [main] INFO org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Neither @ContextConfiguration nor @ContextHierarchy found for test class [com.test.app.web.DeveloperControllerTest], using SpringBootContextLoader 22:32:19.543 [main] DEBUG org.springframework.test.context.support.AbstractContextLoader - Did not detect default resource location for test class [com.test.app.web.DeveloperControllerTest]: class path resource [com/test/app/web/DeveloperControllerTest-context.xml] does not exist 22:32:19.544 [main] DEBUG org.springframework.test.context.support.AbstractContextLoader - Did not detect default resource location for test class [com.test.app.web.DeveloperControllerTest]: class path resource [com/test/app/web/DeveloperControllerTestContext.groovy] does not exist 22:32:19.544 [main] INFO org.springframework.test.context.support.AbstractContextLoader - Could not detect default resource locations for test class [com.test.app.web.DeveloperControllerTest]: no resource found for suffixes {-context.xml, Context.groovy}. 22:32:19.545 [main] INFO org.springframework.test.context.support.AnnotationConfigContextLoaderUtils - Could not detect default configuration classes for test class [com.test.app.web.DeveloperControllerTest]: DeveloperControllerTest does not declare any static, non-private, non-final, nested classes annotated with @Configuration. java.lang.StackOverflowError at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936) at java.util.concurrent.ConcurrentHashMap.containsKey(ConcurrentHashMap.java:964) at java.lang.reflect.WeakCache.containsValue(WeakCache.java:175) at java.lang.reflect.Proxy.isProxyClass(Proxy.java:791) at java.lang.reflect.Proxy.getInvocationHandler(Proxy.java:815) at sun.reflect.annotation.AnnotationInvocationHandler.asOneOfUs(AnnotationInvocationHandler.java:226) at sun.reflect.annotation.AnnotationInvocationHandler.equalsImpl(AnnotationInvocationHandler.java:201) at sun.reflect.annotation.AnnotationInvocationHandler.invoke(AnnotationInvocationHandler.java:64) at com.sun.proxy.$Proxy13.equals(Unknown Source) at java.util.HashMap.putVal(HashMap.java:634) at java.util.HashMap.put(HashMap.java:611) at java.util.HashSet.add(HashSet.java:219) at org.springframework.boot.test.context.ImportsContextCustomizer$ContextCustomizerKey.collectElementAnnotations(ImportsContextCustomizer.java:239) at org.springframework.boot.test.context.ImportsContextCustomizer$ContextCustomizerKey.collectClassAnnotations(ImportsContextCustomizer.java:226) 

Java测试：

 @RunWith(SpringRunner.class) @SpringBootTest @AutoConfigureMockMvc public class DeveloperControllerTest { @Autowired private MockMvc mvc; @Test public void createNewDeveloper() throws Exception { mvc.perform( post("/api/v1/developers") .param("username", "boaty") .param("email", "[e-mail]") .param("password", "123loveboats") .param("passwordConfirmation", "123loveboats") ).andExpect(status().isCreated()); } } 

转换为Kotlin：

 @RunWith(SpringRunner::class) @SpringBootTest @AutoConfigureMockMvc class DeveloperControllerTest { @Autowired lateinit var mvc: MockMvc @Test @Throws(Exception::class) fun createNewDeveloper() { mvc.perform( post("/api/v1/developers") .param("username", "boaty") .param("email", "[e-mail]") .param("password", "123loveboats") .param("passwordConfirmation", "123loveboats")) .andExpect(status().isCreated) } } 

我注意到的是，如果我删除注释AutoConfigureMockMvc Spring将启动并尝试运行，但它会失败，因为它不能autowire MockMvc 。

我使用Kotlin 1.0.1-2和Spring Boot 1.4.0-M2。

Answer 1

Spring Boot尝试在DeveloperControllerTest上检查注释时发生堆栈溢出。

DeveloperControllerTest使用kotlin.Metadata注释。 Metadata注释为kotlin.annotation.Retention 。 Retention用kotlin.annotation.Target注释。 Target和Target是用自己注释的。 被注释的Target是堆栈溢出的原因。

这是合法的，虽然可能很不寻常，用于注释本身的注释。 春季靴子应该更有防御性。

Answer 2

尝试添加

 @ComponentScan(basePackages = arrayOf("YourAppBasePackage")) @SpringBootTest(classes = arrayOf(MyExampleApplication::class)) 

这为我解决了这个问题